Latest content

Bolted A Pin Upgrade for Kafril Group’s Hitachi Demolition Excavator (‘Beast of the East’) See how Kafril Group upgraded their Hitachi Demolition Excavator with Expander System pivot pins to minimize wear and stay competitive. Více informací
Bolted Improving Wind Farm Performance: A Guide to Monitoring Preload in Bolted Joints Expand the possibilities of structural maintenance and infrastructure design with Superbolt and remote preload monitoring  Více informací
Bolted Why Heavy-Duty Vehicles Choose Expander System Pivot Pins Discover the financial benefits of reduced maintenance and repairs, and read a case study of Offroad Leichtbau Manufaktur's use of Expander System in extreme off-road conditions Více informací
Bolted Bolt Maintenance with Huge Potential – how Nord-Lock Group works with Hydropower MRO Solve coupling alignment, secure bolts and mitigate the risks of extreme vibrations with Nord-Lock Group’s expertise in hydropower and turbine bolt maintenance. Více informací
Customer Cases EDF Hydropower and Superbolt Tool: Bolt Maintenance with Huge Potential Maintaining a G5 Pelton wheel at EDF La Coche, one of Europe's largest hydroelectric production units. Více informací
People Superbolt’s Culture of Innovation and All Eyes On Smart Bolting From an industrial fix to a global brand synonymous with multi-jackbolt tensioning, and now predictive maintenance with digital bolting. Více informací

Bolting Tips

Bolting Tips Durable Bolted Joints in Steel Construction Beyond the Basics: The Anatomy of a Properly Designed Joint Více informací
Bolting Tips How Much Force is Required to Tighten a Bolt? You can use the weight of heavy animals to understand the exponential torque force required to tighten larger bolt sizes Více informací
Bolting Tips The Experts: Can I Use Nord-Lock Wedge-Locking Washers on Painted Surfaces? Nord-Lock wedge-locking washers are an effective bolt securing method for use on coated surfaces in offshore industries Více informací
Bolting Tips What to consider when reusing bolted joints? A bolt is installed in a factory without lubrication and everything works fine… until the first time the bolt is removed and reused. Then the problems start. Why? Více informací
Bolting Tips 3 Tips to Choose the Right Bolt Securing Solution Do you work with planned maintenance? Are you seeking a solution that will prevent bolt loosening in your applications? Depending on the application, bolt loosening can have profound consequences b... Více informací
Bolting Tips What Are the Thermal Effects on Preloaded Joints? Due to temperature variations, parts and fasteners expand or contract with various amplitudes depending on rate of temperature change, the mass and size of parts, conductivity of metals, and the coefficient of expansion of each individual materials. Více informací
Bolting Tips What Is the Load Transfer Factor? When utilizing hydraulic bolt tensioners to induce a controlled preload into a bolted joint, several key factors including load transfer factor need to be examined. Více informací
Bolting Tips Odborné poradenství: Prevence oděru a zadírání Oděr je způsoben kombinací tření a přilnavosti kovových povrchů během kluzného pohybu. V extrémních případech vede oděr k zadření. Více informací
Bolting Tips Odborné poradenství: Proč a jakým způsobem zamezují předepínací prvky Superbolt ztrátě předpětí?  Vícešroubové předepínací prvky Superbolt se používají v celé řadě náročných šroubových aplikací vystavených extrémnímu provoznímu zatížení a vysoké míře vibrací. Který mechanický princip předepínacích prvků Superbolt brání ztrátě předpětí? Více informací
Bolting Tips Odborné poradenství: Proč se liší moment potřebný pro utahování a povolování? Proč je točivý moment potřebný pro povolení šroubu nebo matice nižší než moment potřebný pro jejich utažení? Více informací
Bolting Tips Odborné poradenství: Jaký vliv budou mít podložky Nord-Lock na povrchy mých zařízení? Dojde použitím jistícího systému Nord-Lock k poškození povrchu mých zařízení? Více informací
Bolting Tips Odborné poradenství: Je při použití podložek Nord-Lock třeba změnit utahovací moment? Ovlivní použití podložek Nord-Lock moje obvyklé utahovací postupy? Jak? Více informací
Bolting Tips Odborné poradenství: Obrana proti uvolňování  Proč se uvolňování spojů stává čím dál větším problémem? Více informací
Bolting Tips Odborné poradenství: Nástroje pro hydraulické utahování šroubových spojů Jaké jsou hlavní výhody hydraulického utahování šroubových spojů? Více informací
Bolting Tips Odborné poradenství: Jak dostat ze spojovacích prvků to nejlepší? Dozvíte se, jaké faktory je třeba vzít do úvahy při rozhodování, zda provést opětovné použití šroubové sestavy. Více informací
Bolting Tips Odborné poradenství: Mohu použít i dodatečný jistící systém? Přinášíme vám informace o tom, jak používat klínové podložky Nord-Lock a jak optimalizovat vaše šroubové spoje! Více informací
Bolting Tips Odborné poradenství: Utahování předepínacích prvků Superbolt Proč je důležité utahovat Superbolt z počátku křížem? Více informací
Bolting Tips Odborné poradenství: Superbolt - váš flexibilní přítel Jak zlepšuje přidaná flexibilita předepínacích prvků Superbolt vlastnosti šroubového spoje? Více informací
Diagram Bolting Tips What Is the Relationship Between Torque, Preload and Friction? One of the main methods to preload a bolt is to apply a torque on its head. This is a very common process in the industry, however it is not easy to control accurately. Více informací
Bolting Tips What Is the Difference Between a Straight Pin and Expander System? Pivot pins are located on cylinder rod ends and between moving mechanical parts. But what how does Expander System work differently from a traditional pivot pin? Více informací
Bolting Tips The Experts: The making or breaking of bolted joints What is Hooke’s Law and why is it crucial to bolted joints? Hooke’s Law relates to the accurate tightening of bolted joints. When examining a bolt’s behaviour, the axial force is plotted against th... Více informací
Bolting Tips Užitečné rady odborníka na šroubové spoje Jedinečný rozhovor, ve kterém doktor Sakai, přední japonský odborník na šroubové spoje a autor knihy „Technologie šroubových spojů“, sdílí své názory a profesionální pohled na obor, v němž působí. Více informací
Bolting Tips Odborné poradenství: Zlepšení odolnosti vůči únavě materiálu Pro zvýšení kapacity závitu je vhodné používat závity válcované, nikoli řezané. Více informací
Bolting Tips Vysvětlení značení matic a šroubů Na hlavách šroubů a maticích je často uvedeno značení, které může obsahovat číslice, písmena, pomlčky, lomítka, tečky, ale i jiné symboly. Více informací
Bolting Tips Can I use Nord-Lock stainless steel washers with steel bolts? When designing a bolted joint, there are several aspects to consider. Find out what to take note of materials to use for parts of the joint. Více informací

Videos

Video: Get to know Expander System
Video: When Safety Really Matters
Video: Bolt Behavior and Its Elastic Limits
Video: How Does the Nord-Lock Washer Work?
Installing EzFit expansion sleeve coupling bolt Video: Installing Ezfit Mechanical Expansion Bolts
Video: Boltight Typhoon bolt tensioners
Video: Boltight easy piston retraction pump
Irish Rail safely secured with Nord-Lock washers Video: Irish Rail safely secured with Nord-Lock washers
Hydraulic tensioners for compact flanges Video: Hydraulic tensioners for compact flanges
Video: Tightening Boltight multi stud bolt tensioners
Video: Installing a Boltight hydraulic bolt tensioner
Video: Boltight subsea hydraulic bolt tensioners
Are Nord-Lock Wedge-Locking Washers Reusable?
Video: How multifunctional wedge-locking works?
Video: Verifying the Locking Function of Nord-Lock Washers
Video: Nord-Lock Washers in the Junker Vibration Test
Teaser_Video_EzFi Video: Introduction to Superbolt Ezfit Mechanical Expansion Bolts
Video: Superbolt Multi-Jackbolt Technology
ActSafe trusts the proven quality of Nord-Lock washers Video: ActSafe trusts the proven quality of Nord-Lock washers

Knowledge

Knowledge Dinghan Railway Technology Relies on Nord-Lock Vibrations, dynamic transverse forces, and high speeds require the highest safety standards in railway fasteners Více informací
Knowledge Electrification in Mining - Sparks of a Low-Carbon Future Mining is crucial to build green technologies, but the industry itself must decarbonize to meet global sustainability targets. Více informací
Knowledge The Obvious Business Case for Sustainability Sandvik's Head of Sustainability talks about making the shift towards a circular business model Více informací
Knowledge What do I need to know about the Circular Economy? An introduction to the circular economy, circular design, closed looped systems and potential new business models Více informací
Knowledge Making It Circular: Mining Machines and Manganese Steel Sandvik Rock Processing Solutions operates one of the world’s most sustainable manganese steel foundries, where circular design is part of the business model. Více informací
Knowledge From a blank paper to a new generation coupling bolt Steve Brown started his career working with coupling bolts for a company in his hometown outside Manchester in the UK. 30 years later, he has come full circle with the design of a new generation co... Více informací
Knowledge Boltight TSR+ Sometimes you know that a very good solution can be further improved. But actually figuring out how to make a good product great can be difficult. Here’s how the faster, safer and more robust Bolti... Více informací
Knowledge The path to Green Steel The production of steel is one of the world’s major polluters. With the ever-sharper focus on the climate crisis and sustainability, things had to change. And they are, through innovations and circular thinking. But it’s a long road that will require new thinking throughout the product life cycle, from design to end-of-life solutions. Více informací
Knowledge Offshore floating wind energy Imagine producing 11 times more electricity than the entire world needs, using only offshore wind turbines. This may well be possible, reports the respected International Energy Agency, IEA. Více informací
Knowledge A viable solution that can end lug wear In many industries, lug wear is simply accepted as an unavoidable fact of life. But does it need to be? Could the Expander System offer a viable solution? Více informací
Knowledge Common Bolt Locking Methods When choosing a method for preventing bolts from loosening in an assembly there are many different options. One needs to assess the risk of joint failure and the dynamic loads the joint will meet d... Více informací
Knowledge Impact of Extreme Temperatures on Metallic Materials There are dozens of bolting and fastening applications that may involve extreme temperatures. It is important to consider the effects these temperatures will have on the metals being used. Více informací
Knowledge Getting Smart with Superbolt Nord-Lock Group has developed a smart preload monitoring technology, taking the Superbolt Multi-Jackbolt Tensioners (MJTs) to the next level. Více informací
Knowledge Get Smart: The Future of Industrial Automation Is Here Connected machines, components, and systems are creating intelligent networks that can control each other autonomously. How do we adapt in the manufacturing industry? Více informací
Knowledge The Holy Grail of Jackbolt Tensioning Since the launch of the Superbolt Multi-Jackbolt Tensioner (MJT) in 1984, efforts have been made to constantly improve efficiency. Více informací
Knowledge Opportunities in the CIS mining industry Higher commodity prices, lower inflation and an ongoing recovery in the still-shaky Russian economy are fuelling a similar recovery in other CIS countries, in the process opening new opportunities... Více informací
Knowledge Reliability Is The Key To Running A Successful Railway Expander System pivot pin is the permanent solution to lug wear for moving mechanical parts and rod ends. This ensures reliability in the operation and safety of the railway industry worldwide. Více informací
Bolt loosening due to vibration. Stop loosen bolts. Knowledge Why Do Bolts Loosen? Bolt loosening can have profound consequences. One loose bolt can bring a whole production plant to a standstill, while in other applications loose bolts can pose a significant safety hazard. So, what are the main causes of bolt loosening? Více informací
Knowledge How Bolts Are Made? Here Is the Manufacturing Process Bolts can come in a wide range of different sizes and shapes, but the production processes may vary depending on how advanced the bolt designs are. Více informací
Knowledge The History of the Bolt When were the first bolts made and what were they used for? Nord-Lock Group traces the history of the bolt, from ancient Egypt through to modern day bolts & screws. Více informací
Knowledge Safely Securing Connections in Structural Steel Steel is one of the most commonly used materials in commercial and industrial building construction as it provides high design flexibility. Více informací
Knowledge Thread Standards: The Search for a Red Thread Let's explore the history, the evolution and the future of these crucial but often overlooked thread standards. Více informací
Knowledge Hydraulic tensioning or torquing - that is the question Which is the best method for controlled tightening of a bolted joint? Bolted plays hydraulic torquing off against hydraulic bolt tensioning. And the winner is… Více informací
Knowledge Coupling Challenges & the Evolution What are the challenges with couplings and how they evolved over the years. Bolting experts at Nord-Lock Group share useful insights into the application. Více informací
Knowledge Mythbusters: A small thread pitch reduces fatigue life due to the notch effect A general statement is, as so often, not possible in this case since various parameters interact. There could be more factors that influence the thread pitch. Více informací

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Customer Cases EDF Hydropower and Superbolt Tool: Bolt Maintenance with Huge Potential Maintaining a G5 Pelton wheel at EDF La Coche, one of Europe's largest hydroelectric production units. Více informací
Customer Cases Staying on Track with Wedge-Locking Washers Spare-time drag racer Sam Retke uses Nord-Lock wedge-locking washers to prepare a 1984 VW for racing. Více informací
Customer Cases A Secure Bolt Locking Method for Agricultural Drones Unmanned Aerial Vehicles (UAVs) are one new technology that plays a critical role in modernizing China's agricultural sector. Více informací
Customer Cases Vegas High Roller: Securing a 168m Tall Ferris Wheel Boltight hydraulic tensioners secure the brace leg, securing Vegas High Roller against strong winds and seismic activity Více informací
Customer Cases The Reciprocating Compressor - An Oil & Gas Workhorse Kobe Steel uses Nord-Lock washers as well as Superbolt and Boltight series products to build secure compressors Více informací
Customer Cases Secure machinery for the toughest forestry harvesting Find out how this global supplier of forestry grapple harvesters builds robust and flexible machinery that will survive even the toughest of forest harvesting. Více informací
Customer Cases Expander System pivot pins perfect for complex bridge design Custom Expander axles secure critical pivot joints, giving precision and reliability to raise/lower the Hisings Bridge in Sweden for ships to pass underneath. Více informací
Customer Cases Rebuilding the Genoa bridge Safety is always the major consideration in bridge construction, but the circumstances of the Genoa project underscored its absolute priority for PERGENOVA. Suppliers and sub-contractors were chosen based on stellar credentials, but also competitive cost and speed of implementation. Více informací
Customer Cases Expander system ensures long-life for excavators We all expect our roads to be smooth, our pavements unrutted, to have running water, electricity, gas, and telecommunications in our homes and offices and yet many of us probably pay little attenti... Více informací
Customer Cases Strong support – on and off the pitch Fan safety in football stadiums has come a long way in recent decades, yet collapses and accidents still occur. When Bernhard Baumhus GmbH was tasked with building a stand for a newly promoted Bund... Více informací
Customer Cases Providing safety in huge steel constructions When durability and safety are absolutely critical in a construction project, small things like washers can have a huge impact. Více informací
Customer Cases Taking a weight off your shoulders Braving the elements and getting close to Nature can be an enlightening experience, especially for children. But proper planning is crucial. Více informací
Customer Cases An innovative solution for a special bridge 140 meters in length, 45 meters wide and 3,400 metric tons heavy. And gold coloured. The new bridge in Stockholm is definitely set to be a new landmark in Sweden’s capital city. Více informací
Customer Cases Imagining the successful solution in your mind Like a winning athlete, can a maintenance manager see the perfect fix in his mind before actually doing it? Japan Steel Works might have the answer. Více informací
Customer Cases Securing Bolts in Outer Space The upper atmosphere can be tough on equipment. Developing a rocket engine for this environment is a huge challenge. If there are complications in the process, the engine and its associated parts might be damaged. Více informací
Customer Cases Ensuring Safety in Car Racing The Korean Formula Student Competition (KSAE) allows engineering students to design and race their own cars - putting their engineering skills to the test in a real-life environment. Více informací
Customer Cases Expander System Keeps Municipal Projects on Track A simple solution using the Expander System fixed a costly and time-consuming problem. Více informací
Customer Cases A Wind-Win Situation Wind turbine towers are designed to flex and bend, which helps them dissipate the significant forces being exerted upon them. However, this had been causing dangerous failures in the bolts. Více informací
Customer Cases Solving a Pressing Issue with Superbolt Tensioners From hydropower generation facilities to bookbinding press, the usability of Superbolt multi-jackbolt tensioners transcends across different types of applications to keep bolted connections firmly together. Více informací
Customer Cases The Safest Truck Fleet in Europe EDEKA Südbayern takes the initiative to ensure truck safety. Using Nord-Lock wheel nuts, they are securing their fleet of over 300 trucks and 475 truck drivers' lives in southern Germany. Read more
Customer Cases Securing Giant Satellite Antenna Radomes in Antarctica Antarctica is one of the coldest and windiest places on earth. These conditions put an extreme amount of pressure on bolted connections to be secured properly. Více informací
Customer Cases A Simple Solution for an Advanced Machine With the world’s appetite for LCD displays seemingly insatiable, Hyundai Robotics’ LCD handling machines are in high demand from LCD manufacturers. Více informací
Customer Cases Getting the best of both worlds On the face of it, building the Kienlesberg bridge was a real-life mission impossible. After all, how can you successfully bring together two completely opposing concepts? Více informací
Customer Cases Reducing lug wear once and for all Earthworks contractor, Blackwell, supplies all the mining equipment at House of Water, one of the last remaining surface coal mines in the UK. Více informací
Customer Cases Alstom and Nord-Lock Group: A secure coupling French multinational Alstom is a global player in the rail transport industry with a raft of international customers seeking the most comprehensive range of products and services on the rail market. Více informací
Customer Cases Saving time and money by using the right wheel nuts Holzwerke Ladenburger is one of Europe’s largest suppliers of wood products for the building industry, producing 800,000m3 of timber products every year. They had to retighten their wheel nuts ever... Více informací
Customer Cases When the going gets tough Off-road vehicles are built to handle what would break most cars and trucks. Whether driving through mud or racing up a mountainside, these vehicles need state-of-the-art technology to stay in top condition. Více informací
Customer Cases Pushing the boundaries of express trains The central Japan railway Company (JR Central) operates the Shinkansen superexpress bullet trains that connect Tokyo and Osaka – Japan’s two biggest cities. Více informací
Customer Cases Steering pins replaced fast The challenge A mining company in Canada needed a better solution for replacing the steering pins on its fleet of one hundred Komatsu trucks. With the traditional method, replacing the pins took aro... Více informací
Customer Cases Washers reduce costs in propeller assembly Mecklenburger Metallguss GmbH, a world leader in the production of propellers for large container ships chose Nord-Lock as the new standard for all bolted joint applications Více informací
Customer Cases Safe and Effective Wind Turbine Maintenance Nearly two years ago, US company All Energy Management (AEM) began developing retrofits and training companies that service a fleet of 1,000 wind turbines in the UK, the US, Canada and Italy. Více informací
Customer Cases SpaceX competition winners chose wedge-locking washers In 2015, Elon Musk, the billionaire behind the futuristic transport technology companies Tesla and SpaceX, launched the Hyperloop Pod Competition. Více informací
Customer Cases Washers triple-protect nuclear transports Daher Nuclear Technologies GmbH, located in Hanau close to Frankfurt am Main, Germany, develops containers for transportation of radioactive substances. For obvious reasons, these containers must b... Více informací
Customer Cases Cheaper but Better Solution for Tractors With Washers Early in 2017, when Hattat Traktör was testing a new tractor model, they realized that the joints on the air compressor–engine connection bracket were loosening because of vibration. Více informací
Customer Cases Podložky na míru pomáhají motocyklům KTM udržet se na čele závodních okruhů Zkuste si vybavit jakýkoli napínavý závod motocyklů, který jste viděli. Jistě se vám mezi čelními závodníky vybaví oranžové stroje KTM od největšího evropského výrobce motocyklů. Více informací
Customer Cases Hydraulický předepínací nástroj pro tlakovou nádobu jaderného reaktoru Společnost Doosan Heavy Industries & Construction potřebovala řešení pro předepínání šroubů tlakové nádoby jaderného reaktoru. Více informací
Customer Cases Creating big opportunities for Expander System distributor Viggo Bendz has started supplying Stena Recycling with the Expander System for their grab machines - a potentially lucrative development for a small independent operator. Více informací
Customer Cases Bespoke Bolt Tensioners Secure Deep-Water Pipelines Boltight supplies tailormade bolt tensioning equipment for structural split repair clamps to Subsea Innovation in the UK. Více informací
Customer Cases Zaměřeno na bezpečnost v podmínkách větru a vibrací Akkadia navázala partnerství se společností Nord-Lock a montuje její podložky do své kamerové technologie CCTV, která je v nerezovém provedení a odolná vůči vibracím. Více informací
Customer Cases Společnost Nord-Lock Group pomáhá držet železniční sektor na správné koleji Dnes je nalezneme ve všech s bezpečností souvisejících oblastech železničního odvětví, jako jsou podvozky, spojovací zařízení, brzdové soustavy, kolejové tlumiče, skříně/kryty a mnoho dalších. Více informací
Customer Cases Washers keep airplanes in the air Look up into the sky in the coastal city of Miri, in north-eastern Sarawak, Malaysia, and you may see Nord-Lock washers in action: inside a radio-controlled aircraft. These hobby airplanes are sold by Byond Horizon, a business that otherwise uses drones to take aerial photos and videos for companies. Více informací
Customer Cases Inovativní otočné čepy – již žádné odstávky zařízení Společnost Rambooms Oy vyrábí systémy ramene drtiče, které dodává výrobcům drtičů a dolům na celém světě. Výrobky této finské společnosti se používají k rozbíjení nadměrně velkých kamenů. Více informací
Customer Cases Elektrická energie získaná z pohybu mořských vln Vzhledem k tomu, že oceány pokrývají 70 % povrchu planety Země, představuje síla pohybu vln nezměrný a dosud nevyužitý potenciál pro získávání obnovitelné energie. Více informací
Customer Cases Renovating Nuremberg’s metro – without affecting the timetable Renovating an underground railway system without weeks of construction and chaos caused by delays and diversions was previously unheard of. Více informací
Customer Cases Quadrupled machine life and thousands of dollars saved The Yanacocha Mine in Northern Peru is one of the largest gold mines in the world. As in any industry, downtime means lost productivity and – as a result – lost money. Keeping the operations running is always of the utmost importance. Více informací
Customer Cases Systém Expander ušetřil den práce Otočné čepy Expander ušetřily společnosti Gamleby Forest jeden den práce. Více informací
Customer Cases Pressing problem solved with Superbolt Superbolt tensioners secure Sodick's moulding machines allowing to control the force on the joints and guaranteeing optimal performance of the machines. Více informací
Customer Cases Systém Expander pomáhá otvírat nové horizonty Společnost Royal Boskalis Westminster N.V. založená před více než 100 lety je jedním ze světově nejvýznamnějších poskytovatelů služeb bagrování mořského dna. Více informací
Customer Cases Tightened Just Right In a 2006, American Bridge and Fluor got the assignment to build the new eastern span of the San Francisco–Oakland Bay Bridge, the largest public works project in California’s history. Více informací
Customer Cases Výkyvné závěsné oko s impozantní nosností Součástí nového výkyvného závěsného oka Giga DSS společnosti Codipro s nosností 125 tun je i předepínací matice Superbolt. Více informací
Customer Cases Looking deep into the stars The Large Binocular Telescope (LBT) on Mount Graham in Arizona, USA, is already one of the world’s most advanced optical telescopes. It consists of two 8.4-meter primary mirrors on a common mount s... Více informací
Customer Cases Ekologicky šetrná technologie údržby a prořezávání zelených ploch Mulčovací stroje jsou vystaveny extrémním vibracím. Prodloužení jejich životnosti a udržení ostrého stavu řezacích zubů jsou zásadní pro ekologickou šetrnost údržby zelených ploch. Více informací
Customer Cases Nové materiály zvyšují bezpečnost na železnici Vývoj nových materiálů, jako je například sklolaminát, udává nové trendy v oblasti infrastruktury železničních společností. Více informací
Customer Cases Stroj času pro větrné turbíny Sektor větrné energetiky se snaží nalézt způsob, jak snížit spotřebu materiálu pro výrobu velkých součástí větrných elektráren. Více informací
Customer Cases 50 000 hodin zkoušek Expander System s vynikajícím výsledkem Expander System byl podroben provozním zkouškám na kolových nakladačích Volvo Více informací
Customer Cases Plná důvěra v systém Expander již od první instalace Společnost Maskinia instaluje otočné čepy Expander na všechny své stroje Více informací
Customer Cases Podložky zajišťují bezpečnost přepravy Přeprava kapalin musí být prováděna bezpečně a efektivně. V opačném případě může docházet k nehodám ohrožujícím zdraví osob a životní prostředí. Více informací
Customer Cases On site, offshore, under pressure Dutch company Heat Solutions on Site BV (HSOS) is a leading service provider in the metal sector. Their services include heat treatment and machining on site. Více informací
Customer Cases Jištění mostů přes výpusť chladicí vody Společnost Janson Bridging zvolila podložky Nord-Lock SC při realizaci výstavby dočasných železničních mostů v rámci projektu Maasvlakte 2, který je součástí rozšíření přístavu Rotterdam. Více informací
Customer Cases Větrná energie v dosud nevídaných hloubkách Společnost Nord-Lock hraje významnou roli u prototypů turbín SeaTwirl, pro něž dodává podložky a prvky Superbolt.  Více informací
Customer Cases Energie z termojaderné fúze Rozpěrné šrouby umožňují dosažení přesného a opakovatelného zarovnání spojovacích přírub při instalaci. Výsledkem je snížení náročnosti obtížného vyvažování osy hřídele.   Více informací
Customer Cases Zůstat na správné koleji Díky použití podložek Nord-Lock si společnost PT. INKA může být jista, že spoje mezi podvozkem a rámem podvozku na jejích vozech jsou plně zajištěny. Více informací
Customer Cases Putting the X-series to the test The Challenge Wam Metals is a manufacturer and supplier of a wide range of specialized non-ferrous and ferrous components, servicing both the local South African and the international markets. The... Více informací
Customer Cases Předepínací prvky Superbolt zajišťují kryt kalového čerpadla Předepínací prvky Superbolt byly použity jako náhrada metody využívající hydraulické klíče k provedení instalace krytu čerpadla. Více informací
Customer Cases Výrobce lesní techniky volí spolehlivé řešení pro jištění šroubů Švédský výrobce lesní techniky spolupracuje se společností Nord-Lock, aby si mohl být jist, že součásti jeho zařízení budou bezpečně zajištěny na svých místech. Více informací
Customer Cases Výzva ve výšce obřího jeřábu Pro firmu Terex Tower Cranes založenou v roce 1962 (jako Comedil S.r.l) s centrálou v Itálii, která vyrábí stavební a průmyslové jeřáby, nejsou výzvy ničím novým. Více informací
Customer Cases Výrobce moderních větrných turbín má díky společnosti Nord-Lock klidný spánek Kvalita a odolnost jsou hlavními prioritami společnosti Eastern Wind Power při konstrukci 50kW větrných turbín s vertikální osou otáčení. Více informací
Customer Cases Čína: Příležitosti v oblasti těžby uhlí Od roku 2008, kdy Čína zavedla plán Integrace uhelných zdrojů, zaznamenává toto odvětví na čínském trhu neustálý pokles. Více informací
Customer Cases Nová energie pro Ekvádor Ekvádor již nyní pokrývá 45% své spotřeby elektřiny prostřednictvím vodních elektráren. Více informací
Customer Cases Předepínací prvky Superbolt zajišťují kyslíkové konvertory v britské ocelárně Tata Steel Ocelárna společnosti Tata Steel ve městě Port Talbot zjednodušila svůj provoz díky předepínacím prvkům Superbolt instalovaným na kyslíkových konvertorech. Více informací
Customer Cases Tensioners on Alcoa 50,000-ton press When Alcoa decided to redesign and rebuild their iconic 50,000 ton press located in Cleveland, OH, they contacted Superbolt to design specialty tensioners that could handle the demanding bolting requirements. Více informací
Customer Cases A charge from the Alps Backdropped by the Alps, a Swiss power plant has solved the problem of storing electricity. Více informací
Customer Cases Výhoda konceptu iDapt Podložky Nord-Lock série X pomáhají k tomu, aby spojení mezi hlavou a rukojetí rakety bylo co nejbezpečnější a odolné vůči vibracím a sesedání materiálu. Více informací
Customer Cases Bezpečnost přináší důvěru Synonymem nejvyšší míry bezpečnosti je již více než 30 let společnost Nord-Lock Group. Více informací
Customer Cases Mocné kruhy Kruhová zakládací zařízení sypkého materiálu poskytují vysokou skladovací kapacitu na malé ploše. Více informací
Customer Cases Order in the court The Challenge Invented 50 years ago in Mexico, the racquet sport padel tennis is now played all over Europe. In Sweden, sport floor specialist Unisport is riding the hype, having built around 60 pa... Více informací
Customer Cases Giant hammer Driving a pile into the ground involves lifting a 6,000 kg (13,200 pound) weight and accelerating it from a 150 cm (five feet) height, creating a 105 kilojoule force (78,000 foot pound) collision –... Více informací
Customer Cases Testing the Energy Solutions of Tomorrow At Clemson University, an old shipyard has been turned into the world’s largest wind energy testing centre. Renk Test System (RTS), a German company, has provided a facility containing the world’s... Více informací
Customer Cases Rallying for safe bolted joints Motor sports are not easy on the cars. High speed, torque, vibrations, g-forces and hard knocks put enormous strain on the cars and their components. Více informací
Customer Cases Making deep sea drilling safer As the global industry looks for safer deep sea oil drilling solutions, MPO’s gas riser handling systems are in high demand. In just a few years, they’ve grown from a small office into a global supplier with over 200 employees. Více informací
Customer Cases Extreme temperature and high pressure Ethylone and Propylene might not be well known substances to the general public, but they’re actually among the most important products in the global petrochemical industry. Více informací
Customer Cases Faster transport for heavy machinery Excavators are a vital piece of machinery for any mine, but for all their horsepower, they are incredibly slow and cumbersome to move. In fact, 15 percent of their time is spent travelling, and this enforced downtime means lost income. Více informací
Customer Cases Andritz Hydro Helping Hydropower Look to the Future The hydropower plant in Laxede on the river Luleälven was built more than 50 years ago. The turbines in two of the three units are now being refurbished and, for the first time, the runners will be replaced – a challenge taken on by Andritz Hydro AB. Více informací
Customer Cases Right on target For over thirty years, Biathlon Target System Kurvinen has been a world-class pioneer in biathlon target and range systems and has exported its products to over 30 countries. During a competition, Kurvinen targets will be continuously shot at and subjected to thousands of hits. Více informací
Customer Cases Turning water into power For over 35 years, Canyon Hydro has been delivering hydro-electric systems to customers all over the world, and has built up a reputation for efficient designs, quality components and comprehensive... Více informací
Customer Cases The height of safety When you are building the world’s tallest freestanding broadcasting tower in one of the world’s most earthquake-prone countries, using anything but the highest quality materials and the safest construction solutions is just unthinkable. Více informací
Customer Cases What a lift! When enormous 35-tonne containers are being maneuvered into place at the world’s major ports equipment reliability is paramount. The giant cranes must work under tight constraints and with exacting precision.That’s why Nord-Lock and crane spreader manufacturer Bromma are the perfect match. Více informací
Customer Cases Tough machines for a tough industry In the mining industry, every minute of downtime results in lost income, and one loose fastener can cost a small fortune. This is why Joy Global doesn’t compromise when it comes to bolt security. Více informací
Customer Cases Propelled upwards Sensenich has been manufacturing aircraft propellers since 1932, and as the industry has grown and developed, it has continued to develop new propellers to match. Více informací
Customer Cases The World’s Biggest Crane Bigge 125D AFRD (A-Frame Ring Derrick) is one of the biggest super cranes in the world. A machine of this size needs a strong bolting solution, that's where Superbolt tensioners were used to connect large components. Více informací
Customer Cases Maintaining a tight grip Bolt loosening can occur due to settlement or relaxation of a bolted joint. Nord-Lock X-series washers prove to be solution for Mosdorfer's space dampers. Více informací
Customer Cases Competing in the world’s most dangerous race In January 2013, the legendary Dakar Rally started in Peru for the first time and end in Chile, having crossed the Andes into Argentina. Více informací
Customer Cases Forging ahead How do you hold together a press which exerts 8,000 tons of pressure to shape red-hot pieces of metal which themselves weigh tens of tons? For A. Finkl & Sons, a leading supplier of forging die steels and custom open-die forgings, there was only one answer: Superbolt. Více informací
Customer Cases Eliminating bolt loosening for good At power plants across the world, gas turbines are becoming increasingly vital to the world’s power supplies. Mitsubishi Heavy Industries currently manufacture ultra-large gas turbines, which are more than six metres tall and over 16 metres long. Více informací
Customer Cases Adjustable bolted propeller Large ships are increasingly being equipped with higher propulsive power. This trend is generating a need for larger propellers. Such propellers are typically of monobloc design, i.e. constructed from one casting. They are difficult to machine and their high weight and bulk make handling and transportation a costly enterprise. Více informací
Customer Cases Bolting into space Mankind’s next giant leap in space exploration will take us to destinations throughout our solar system never before explored by humans.The spacecraft that will take us there, the Orion Multi-Purpo... Více informací
Customer Cases Safe travelling The City Tunnel is a rail link between Malmö and the Öresund Bridge in Sweden, with a six kilometre railway running under Malmö city centre. The glasswork company Skandinaviska Glassystem, was assigned the task of constructing the roof of the new Triangeln railway station situated in central Malmö. Více informací
Customer Cases Powering the industry Electric motors are often called the “workhorses of the industry”, running all kinds of machinery ranging from escalators and ski lifts to huge port cranes. Heavy mechanical movements require a reliable drive that ensures the best torque, speed, and motor efficiency. This reliability often starts with the right bolt securing system. Více informací
Customer Cases GE Wind turbine using Expansion bolt for blind hole The Nord-Lock Expansion bolt for blind hole applications is used on the flange coupling of the gear box on this wind turbine. The solution integrates Superbolt technology and is used to transmit the enormous torque. Více informací
Customer Cases Press columns on forging press Due to the nature of big presses, large diameter columns must be used to distribute the extremely high working loads generated. However, the torque required to prestress these columns is almost impossible to achieve with conventional bolting methods. Více informací
Customer Cases Opening new doors Since its completion last year, the Burj Khalifa skyscraper in Dubai has already broken numerous world records. Apart from being the tallest structure ever built, it also includes the world’s highe... Více informací
Customer Cases Good vibrations The huge machines made by Metso Minerals France are a mechanical nightmare. Whereas vibrations are usually eliminated from machines, the very raison d’être of the Metso machines is to vibrate as mu... Více informací
Customer Cases The power of the sun: transformed by Siemens turbines Assembling an industrial-sized turbine requires acres of room. It also requires thousands of bolts and washers to be assembled and tightened to guarantee a service life of the product, which in the solar energy, biomass, oil and gas sectors, is typically upwards of 30 years. Více informací
Customer Cases The Mercedes connection Hybrid vehicles use combustion engines and electric motors in parallel. High-voltage supply systems in these new vehicles place considerable demands on the connectors which provide the interface between the battery and the electronics. Více informací
Customer Cases Plunging to New Depths In its quest to be the world’s leading service provider for the exploration and extraction of natural resources, Fugro has had to overcome all the world’s natural barriers. With its world class ROVs (remotely operated vehicles) even the deepest oceans are within its reach. Více informací
Customer Cases Pulling Their Weight Through the daily grind of its gruelling work schedule, many areas of a tractor, such as the front axle, come under incredible strain and bolt loosening can be a constant problem. ITL use Nord-Lock washers in all such critical areas, including the front axle, engine clutch and gearbox. Více informací
Customer Cases Vertical agitator The bearing play specified by the bearing manufacturer FAG for this tapered roller bearing could not be adjusted correctly. The existing bearing lock nut design and the tight space have prevented this. Více informací
Customer Cases Built for Speed The world’s fastest conventional trains run in France, and not just to break the April 2007 record of 574.8 km/h (under test conditions with a shortened train). The TGV regularly runs at 320 km/h and at those kinds of speeds it is absolutely vital that nothing falls off the rolling-stock to derail the train. This is where Nord-Lock comes into the picture. Více informací
Customer Cases Tough trial puts wheel nuts to the test “We’ve been in some pretty tough situations but we haven’t had any wheels come loose since we fitted Nord-Lock wheel nuts.” - proven at the European truck trial Více informací
Customer Cases Conquering the Seas Mitsui recently began using Nord-Lock components in their marine diesel engines. Because Nord-Lock components are comparatively light and small, they are effective in making assembly and tightening quicker and safer especially in poorly-accessible or confined places. Více informací
Customer Cases A Giant That Treads Softly A combine harvester fitted with the Soucy Track system reduces the pressure exerted on the ground. Chemical adhesives used for bolt securing in the past often failed, and then they turned to Nord-Lock washers. Více informací
Customer Cases You’re gonna dig this A kilometer below the churning waves, more than a thousand pairs of Nord-Lock washers are used throughout the plough application where clamp load must be maintained in the bolted joints. Více informací
Customer Cases Underground operations Sandvik Mining and Construction was having problems with the bolts clamping the cutting tools to the reaming head; they were sometimes coming loose under the extreme vibrations, loads and torque involved. Replacing the bolts which vibrated loose was a costly, time consuming and often dangerous job. Více informací
Customer Cases Built for Speed The latest version of Japan Railway’s famous Shinkansen, known around the world as the Bullet Train, reaches speeds of 300 kilometres per hour. Více informací
Customer Cases A formula for success A key piece of equipment in any pit stop is the pneumatic impact wrench, or wheel gun, which is relied on to loosen the large nut holding on each wheel and then screw on a new wheel – all in the blink of an eye. Více informací
Customer Cases Tunnel vision Twenty meters beneath the streets of Malmö, Sweden, the new underground section of the city’s central station is gradually taking shape. Více informací
Customer Cases Piste perfect Whatever slope a skier can ski down, this vehicle can drive up. Regardless of the angle, the pitch, the bumps and the dips, the extreme cold and driving snow, nothing stands in its way. Více informací
Customer Cases Cranes The connection between the slewing ring and the portal requires very high precision during the tightening of the bolted connection. Kirow Ardelt meets these high demands by using Superbolt® tensioners. Více informací
Nichirin equips its tanker trucks with Nord-Lock wheel nuts to ensure maximum safety and reliability during transport. Customer Cases Ensuring safer tanker trucks with Nord-Lock® Wheel Nuts Nichirin improves truck safety and reduces maintenance costs by replacing traditional wheel-nut indicators with Nord-Lock Wheel Nuts, delivering reliable anti-loosening performance. Více informací
old installation technique Customer Cases Modernizing Hydroelectric Generator Maintenance with Boltight® Hydraulic Nuts Discover how American Electric Power (AEP) improved safety, reduced labor hours, and enhanced reliability at Smith Mountain Dam by replacing traditional bolting methods with Boltight® hydraulic nuts. Learn how this innovative solution supports efficient hydroelectric generator maintenance Více informací
Orion Pad Abort Customer Cases Superbolt® Secures NASA’s Orion Pad Abort-1 Success Discover how Superbolt® multi-jackbolt tensioners played a critical role in NASA’s Orion Pad Abort-1 flight test, ensuring safe separation under extreme conditions. Více informací
Hyundai Boltight Customer Cases High-Pressure Flange Integrity Solutions for Oil Refinery Bolting Discover how advanced hydraulic bolt tensioning solutions from Boltight ensured high-pressure flange integrity during the Basrah Oil Refinery modernization. Learn about technical challenges, expert training, and the impact on refinery safety and efficiency. Více informací
LG Boltight Customer Cases Custom Hydraulic Tensioning Solution Boosts Reliability at LG Chem Daesan Petrochemical Complex Discover how Boltight’s tailored hydraulic tensioning system and ultrasonic measurement tools resolved high-pressure gasket joint leaks at LG Chem’s Daesan Complex, enhancing safety, uptime, and operational efficiency. Více informací
Kakao Offshore Wind Customer Cases Offshore Wind Innovation: Boltight® Hydraulic Tensioning in Action Discover how Boltight®️ hydraulic tensioning solutions enabled safe, precise installation of high-tension joints in South Korea’s Jeonnam Offshore Wind Power Project. Learn about advanced tools like Typhoon+ tensioners, Echometer, and custom carriage systems driving renewable energy forward. Více informací
CAT 793B Morenci. Customer Cases Expander’s key success story with CAT 793B mining trucks How a 2008 on-site trial in Wyoming’s Powder River Basin became a prime example of Expander pins as after-market replacements for heavy-duty mining equipment. Více informací
Customer Cases The bLINK artwork is built to withstand vibrations and harsh weather for decades bLINK shines above Gothenburg’s traffic—secured by Nord-Lock washers to endure decades of vibrations, weather, and corrosion. Více informací
Customer Cases Boltight hydraulic tensioners utilized in nuclear small modular reactors The Boltight engineering team addresses real-world operating conditions of SMRs, including bolt tolerance, with a pragmatic, innovative approach. Více informací
Customer Cases SMS Equipment use Expander pins for a first-fit Komatsu haul truck Make installation and maintenance of haul trucks used in mining safer and more effective. Discover the benefits of the Expander System. Více informací
Bolting Tips Durable Bolted Joints in Steel Construction Beyond the Basics: The Anatomy of a Properly Designed Joint Více informací
Bolting Tips The Experts: What Happens When Bolts Start to Rotate? Vibration, dynamic loads, settlements and more - how do you maintain preload when a bolt is exposed to these external factors? Více informací
Bolting Tips The Experts: Can I Use Nord-Lock Wedge-Locking Washers on Painted Surfaces? Nord-Lock wedge-locking washers are an effective bolt securing method for use on coated surfaces in offshore industries Více informací
Bolting Tips How Much Force is Required to Tighten a Bolt? You can use the weight of heavy animals to understand the exponential torque force required to tighten larger bolt sizes Více informací
Bolting Tips What happens to preload and clamp force when external loads are applied? We generally apply torque via a wrench to the bolt or nut to generate the required tightening load. This tightening load is called preload. Preload is defined as the tension created in a fastener w... Více informací
Bolting Tips What affects pivot wear? For a machine manufacturer there are many factors to consider to minimize pivot wear over time. Více informací
Bolting Tips What to consider when reusing bolted joints? A bolt is installed in a factory without lubrication and everything works fine… until the first time the bolt is removed and reused. Then the problems start. Why? Více informací
Bolting Tips 3 Tips to Choose the Right Bolt Securing Solution Do you work with planned maintenance? Are you seeking a solution that will prevent bolt loosening in your applications? Depending on the application, bolt loosening can have profound consequences b... Více informací
Bolting Tips What Are the Thermal Effects on Preloaded Joints? Due to temperature variations, parts and fasteners expand or contract with various amplitudes depending on rate of temperature change, the mass and size of parts, conductivity of metals, and the coefficient of expansion of each individual materials. Více informací
Bolting Tips What Is the Load Transfer Factor? When utilizing hydraulic bolt tensioners to induce a controlled preload into a bolted joint, several key factors including load transfer factor need to be examined. Více informací
Diagram Bolting Tips What Is the Relationship Between Torque, Preload and Friction? One of the main methods to preload a bolt is to apply a torque on its head. This is a very common process in the industry, however it is not easy to control accurately. Více informací
Bolting Tips What Is the Difference Between a Straight Pin and Expander System? Pivot pins are located on cylinder rod ends and between moving mechanical parts. But what how does Expander System work differently from a traditional pivot pin? Více informací
Bolting Tips The Experts: The making or breaking of bolted joints What is Hooke’s Law and why is it crucial to bolted joints? Hooke’s Law relates to the accurate tightening of bolted joints. When examining a bolt’s behaviour, the axial force is plotted against th... Více informací
Bolting Tips Užitečné rady odborníka na šroubové spoje Jedinečný rozhovor, ve kterém doktor Sakai, přední japonský odborník na šroubové spoje a autor knihy „Technologie šroubových spojů“, sdílí své názory a profesionální pohled na obor, v němž působí. Více informací
Bolting Tips Odborné poradenství: Zlepšení odolnosti vůči únavě materiálu Pro zvýšení kapacity závitu je vhodné používat závity válcované, nikoli řezané. Více informací
Bolting Tips How to Optimize a Bolted Joint Through Clamped Length? Clamped length is the free length of a bolt that is stretched under tension. Find out what is the optimal bolt length that you should consider. Více informací
Bolting Tips When and Why Do You Need Lubrication During Tensioning? Proper use of lubrication is crucial to safeguarding repeatable and precise preload control in bolt tensioning. What should you pay attention to during lubrication? Více informací
Bolting Tips Vysvětlení značení matic a šroubů Na hlavách šroubů a maticích je často uvedeno značení, které může obsahovat číslice, písmena, pomlčky, lomítka, tečky, ale i jiné symboly. Více informací
Bolting Tips Can I use Nord-Lock stainless steel washers with steel bolts? When designing a bolted joint, there are several aspects to consider. Find out what to take note of materials to use for parts of the joint. Více informací
Bolting Tips Odborné poradenství: Prevence oděru a zadírání Oděr je způsoben kombinací tření a přilnavosti kovových povrchů během kluzného pohybu. V extrémních případech vede oděr k zadření. Více informací
Bolting Tips The Experts: The benefit of SC-washers What is a SC-washer and when should I use it? Více informací
Bolting Tips Odborné poradenství: Jaký vliv budou mít podložky Nord-Lock na povrchy mých zařízení? Dojde použitím jistícího systému Nord-Lock k poškození povrchu mých zařízení? Více informací
Bolting Tips Odborné poradenství: Proč se liší moment potřebný pro utahování a povolování? Proč je točivý moment potřebný pro povolení šroubu nebo matice nižší než moment potřebný pro jejich utažení? Více informací
Bolting Tips Odborné poradenství: Proč a jakým způsobem zamezují předepínací prvky Superbolt ztrátě předpětí?  Vícešroubové předepínací prvky Superbolt se používají v celé řadě náročných šroubových aplikací vystavených extrémnímu provoznímu zatížení a vysoké míře vibrací. Který mechanický princip předepínacích prvků Superbolt brání ztrátě předpětí? Více informací
Bolting Tips Odborné poradenství: Nástroje pro hydraulické utahování šroubových spojů Jaké jsou hlavní výhody hydraulického utahování šroubových spojů? Více informací
Bolting Tips Odborné poradenství: Mohu použít i dodatečný jistící systém? Přinášíme vám informace o tom, jak používat klínové podložky Nord-Lock a jak optimalizovat vaše šroubové spoje! Více informací
Bolting Tips Odborné poradenství: Je při použití podložek Nord-Lock třeba změnit utahovací moment? Ovlivní použití podložek Nord-Lock moje obvyklé utahovací postupy? Jak? Více informací
Bolting Tips The Notch Effect What is the notch effect and how does it affect bolts? Více informací
Bolting Tips How to determine a suitable tightening torque I don’t know the tightening accuracy of my tool. How should I proceed with my torque calculation? Více informací
Bolting Tips Odborné poradenství: Jak dostat ze spojovacích prvků to nejlepší? Dozvíte se, jaké faktory je třeba vzít do úvahy při rozhodování, zda provést opětovné použití šroubové sestavy. Více informací
Bolting Tips Odborné poradenství: Obrana proti uvolňování  Proč se uvolňování spojů stává čím dál větším problémem? Více informací
Bolting Tips The Benefits of Bolt Shanks What is a bolt shank and what are the benefits and advantages of this solution? Více informací
Bolting Tips Odborné poradenství: Superbolt - váš flexibilní přítel Jak zlepšuje přidaná flexibilita předepínacích prvků Superbolt vlastnosti šroubového spoje? Více informací
Bolting Tips Odborné poradenství: Utahování předepínacích prvků Superbolt Proč je důležité utahovat Superbolt z počátku křížem? Více informací
Bolting Tips The Experts: Thread engagement in a tapped hole What is the recommended thread engagement to make a strong connection for a component with a tapped hole? Více informací
Bolting Tips The Importance of Temperature in Bolting What is the most common temperature range for bolts, and what are the consequences of exceeding it? Více informací
Bolting Tips Extending the Service Life of Studs and Bolts How do you extend the life of studs? Více informací
Bolting Tips Effects of Lubrication When Reusing Fasteners By lubricating the fastener before every use, not only can friction be reduced to improve torque-to-load ratio, friction scatter can also be reduced to improve preload accuracy. Více informací
Bolting Tips Top 10 Tips for Secure Bolting Achieving the safest, most secure bolted connection involves many factors. To help you achieve the best possible results we have summarized our top tips. Více informací
Bolting Tips The Experts: The story behind the phenomenon The ‘Virgin Bolt Phenomenon’ is not commonly known but is an important variable to take into account when evaluating stretch measurements properly’ Více informací
Bolting Tips The Experts: Sharing the load Why does Nord-Lock supply a hardened washer with every Superbolt tensioner? Více informací
Bolting Tips Continued Innovation: Tamper-resistant tensioner ready for the market The tamper-resistant tensioner is much like an armoured version of the multi-jackbolt tensioner, except it requires a specially designed socket for tightening and removal. Více informací
Bolting Tips The Formula for Calculating Jackbolt Torque How do I calculate the jackbolt torque (based on a formula)? Více informací
Bolting Tips The Experts: SEMS overview  What are SEMS? Více informací
Bolting Tips What Is Material Fatigue? Material fatigue occurs when a component is subjected to cyclic loading. What is the fatigue phenomena in bolted connections? Více informací
Bolting Tips How Do I Take Torsion into Consideration When Tightening?  How do I take torsion into consideration when tightening a bolted joint? Více informací
Bolting Tips Which Washer Material Should I Choose? Nord-Lock washers come in five different materials. How do I know which one to use in my application? Více informací
Bolting Tips How Much Thread Engagement Is Needed in a Tapped Hole? Is it possible to determine the minimum thread engagement in a tapped hole to avoid thread stripping? Více informací
Bolting Tips The Experts: Can Nord-Lock be used on inclined contact surfaces? What is the maximal angle of surface inclination where the Nord-Lock wedge-locking system can still work successfully? Více informací
Bolting Tips The Experts: Do Nord-Lock washers work with fiber composites? Can Nord-Lock washers be used on fiber composite materials? Více informací
Bolting Tips The Experts: Can I yield my bolt by over-tightening? Do I risk yielding my bolt, due to over-tightening, when using Nord-Lock wedge-locking solutions? Více informací
Bolting Tips Can I Use Other Washers with Nord-Lock Washer? Can I put another washer under a Nord-Lock washer? Více informací
Bolting Tips Should I choose fine or coarse threaded bolts? Threaded fasteners are commonly used in bolted joints, but what is the difference between fine and coarse threaded bolts? Více informací
Bolting Tips Why Use Wedge-Locking Instead of Friction-Based Locking? What is the difference between friction-based locking and wedge locking and when is lubrication needed? Více informací
Bolting Tips The Experts: Why do bolts rotate loose? Why do bolts and nuts rotate loose when a bolted joint is subjected to vibration and/or dynamic loads? Více informací
Bolting Tips What is preload and why is it important? What is preload? How is the preload for an application determined? Why is it important to make sure a bolted joint has the correct amount of preload? Více informací
Knowledge 4 benefits of Nord-Lock Black Washers you should know about Discover the 4 key benefits of Nord-Lock Black Washers! Enhance safety, durability & corrosion resistance. Více informací
Armored military vehicle on rugged terrain. Nord-Lock wedge-locking washers ensure safe bolted connections even in the harshest environments. Knowledge Mission-critical equipment has a bolted solution: wedge-locking washers from Nord-Lock The Swedish manufacturer’s wedge-locking technology can safeguard the bolted connections of essential vehicles and machines. Více informací
Knowledge Good Vibrations: Innovating Small-Scale Wind 'Turbines' Vortex Bladeless Wind are an innovative wind energy startup, pioneering technologies to provide residential wind energy. Více informací
Knowledge History of The Washer From the wagon to wedge-locking, loosening or slackening have been intrinsic problems since the invention of nuts and bolts Více informací
Knowledge Making It Circular: Mining Machines and Manganese Steel Sandvik Rock Processing Solutions operates one of the world’s most sustainable manganese steel foundries, where circular design is part of the business model. Více informací
Knowledge What do I need to know about the Circular Economy? An introduction to the circular economy, circular design, closed looped systems and potential new business models Více informací
Knowledge The Obvious Business Case for Sustainability Sandvik's Head of Sustainability talks about making the shift towards a circular business model Více informací
Knowledge Electrification in Mining - Sparks of a Low-Carbon Future Mining is crucial to build green technologies, but the industry itself must decarbonize to meet global sustainability targets. Více informací
Knowledge Dinghan Railway Technology Relies on Nord-Lock Vibrations, dynamic transverse forces, and high speeds require the highest safety standards in railway fasteners Více informací
Knowledge From a blank paper to a new generation coupling bolt Steve Brown started his career working with coupling bolts for a company in his hometown outside Manchester in the UK. 30 years later, he has come full circle with the design of a new generation co... Více informací
Knowledge The path to Green Steel The production of steel is one of the world’s major polluters. With the ever-sharper focus on the climate crisis and sustainability, things had to change. And they are, through innovations and circular thinking. But it’s a long road that will require new thinking throughout the product life cycle, from design to end-of-life solutions. Více informací
Knowledge Offshore floating wind energy Imagine producing 11 times more electricity than the entire world needs, using only offshore wind turbines. This may well be possible, reports the respected International Energy Agency, IEA. Více informací
Knowledge Boltight TSR+ Sometimes you know that a very good solution can be further improved. But actually figuring out how to make a good product great can be difficult. Here’s how the faster, safer and more robust Bolti... Více informací
Knowledge Common Bolt Locking Methods When choosing a method for preventing bolts from loosening in an assembly there are many different options. One needs to assess the risk of joint failure and the dynamic loads the joint will meet d... Více informací
Knowledge Impact of Extreme Temperatures on Metallic Materials There are dozens of bolting and fastening applications that may involve extreme temperatures. It is important to consider the effects these temperatures will have on the metals being used. Více informací
Knowledge Getting Smart with Superbolt Nord-Lock Group has developed a smart preload monitoring technology, taking the Superbolt Multi-Jackbolt Tensioners (MJTs) to the next level. Více informací
Knowledge Get Smart: The Future of Industrial Automation Is Here Connected machines, components, and systems are creating intelligent networks that can control each other autonomously. How do we adapt in the manufacturing industry? Více informací
Knowledge The Holy Grail of Jackbolt Tensioning Since the launch of the Superbolt Multi-Jackbolt Tensioner (MJT) in 1984, efforts have been made to constantly improve efficiency. Více informací
Knowledge Opportunities in the CIS mining industry Higher commodity prices, lower inflation and an ongoing recovery in the still-shaky Russian economy are fuelling a similar recovery in other CIS countries, in the process opening new opportunities... Více informací
Knowledge Reliability Is The Key To Running A Successful Railway Expander System pivot pin is the permanent solution to lug wear for moving mechanical parts and rod ends. This ensures reliability in the operation and safety of the railway industry worldwide. Více informací
Bolt loosening due to vibration. Stop loosen bolts. Knowledge Why Do Bolts Loosen? Bolt loosening can have profound consequences. One loose bolt can bring a whole production plant to a standstill, while in other applications loose bolts can pose a significant safety hazard. So, what are the main causes of bolt loosening? Více informací
Knowledge How Bolts Are Made? Here Is the Manufacturing Process Bolts can come in a wide range of different sizes and shapes, but the production processes may vary depending on how advanced the bolt designs are. Více informací
Knowledge A viable solution that can end lug wear In many industries, lug wear is simply accepted as an unavoidable fact of life. But does it need to be? Could the Expander System offer a viable solution? Více informací
Knowledge The History of the Bolt When were the first bolts made and what were they used for? Nord-Lock Group traces the history of the bolt, from ancient Egypt through to modern day bolts & screws. Více informací
Knowledge Safely Securing Connections in Structural Steel Steel is one of the most commonly used materials in commercial and industrial building construction as it provides high design flexibility. Více informací
Knowledge Hydraulic tensioning or torquing - that is the question Which is the best method for controlled tightening of a bolted joint? Bolted plays hydraulic torquing off against hydraulic bolt tensioning. And the winner is… Více informací
Knowledge Thread Standards: The Search for a Red Thread Let's explore the history, the evolution and the future of these crucial but often overlooked thread standards. Více informací
Knowledge Coupling Challenges & the Evolution What are the challenges with couplings and how they evolved over the years. Bolting experts at Nord-Lock Group share useful insights into the application. Více informací
Knowledge Mythbusters: A small thread pitch reduces fatigue life due to the notch effect A general statement is, as so often, not possible in this case since various parameters interact. There could be more factors that influence the thread pitch. Více informací
Knowledge Health & Safety: Shared expertise increases safety DROPS (Dropped Objects Prevention Scheme) was started to counteract objects dropped from height damage equipment, disrupt operations and causing injuries. Více informací
Knowledge Nord-Lock Group uses Siemens NX CAE to develop cutting edge technologies Bolting solution specialist uses NX CAE to develop cutting-edge technologies. Gained insights of bolted joint and causes of joint failures. Více informací
Knowledge New innovations to solve difficult shaft coupling bolting problems Examine possibility to overcome bolting challenges to achieve a bolted connection that is pre-loaded safely. Více informací
Knowledge Bolting With Plastic and Composites The multifunctional wedge-locking technology has a number of advantages compared to conventional solutions when bolting plastic and composites. Více informací
Knowledge The Comparison: Bolts vs Rivets By using Nord-Lock washers, a bolted fastener can overcome many of the disadvantages of rivets, while still offering the advantages of bolts. Více informací
Knowledge Does Adhesive Works as a Lubricant During Tightening? Chemical thread locking is a traditional solution used against bolt loosening, but does it has the same effect as a real lubricant? Více informací
Knowledge Bolting Failure Analysis Nuts and bolts are used everywhere. A bolting failure at home is usually only a minor nuisance. However, a similar failure at a nuclear power plant could be catastrophic. Více informací
Knowledge Friction: A force of nature Friction is a factor not to be ignored when it comes to tensioning bolts. Always present in a bolted joint, friction can be part of the problem – or part of the solution. Více informací
Knowledge Stronger, safer bolting with FEA software Nord-Lock Group's Finite Element Analysis (FEA) offers a fast and convenient method for calculating the risk of bolt failure. Více informací
Knowledge Aluminium: The endless benefits Aluminium has dominated the aerospace industry for over half a century. Now other industries are turning to the miracle metal. Více informací
Knowledge Expandable bolts save time and money Superbolt EzFit expansion coupling bolts offer a simple and quick bolting solution for large machinery couplings that will save time and costs. Více informací
Knowledge Comparison of Common Bolt Tightening Methods Tightening methods can be categorized according to the principle of how the preload is generated. The 2 basic principles are rotational tightening and tensioning. Více informací
Knowledge Mythbusters: A common misconception is that stainless steel is never affected by corrosion Stainless steel is never affected by corrosion - is this the truth or a misconception? Více informací
Knowledge Combating Corrosion and Protection for Fasteners Any metal product will eventually rust. How corrosion happens and why choosing the right materials and corrosion protection for the bolt is crucial? Více informací
Knowledge Mythbusters: It takes longer to install a Superbolt (MJT) than the solution you already have Tightening large diameter bolts with Superbolt tensioners, does it take more or less time? Více informací
Knowledge Comparing Nord-Lock X-series with serrated spring washers How does Nord-Lock X-series washer compares to a serrated spring washers? Let's look at the dynamic loads, reusability, settlement and creep. Více informací
Knowledge No bolt loosening in steel structures Nord-Lock introduces a new range of washers specially designed to fit the HV bolting systems used for steel construction. Více informací
Knowledge Does the Torque Still Remain in the Bolt After Tightening? Many people believe that after tightening part of the torque still remains in the bolt - is that true or false? We got the answer! Více informací
Knowledge STCs offer a unique alternative for large press columns This patented design is a new style of Superbolt tensioner that makes it even easier to secure large threads and press columns. Více informací
Knowledge Comparing Superbolt nut-style multi-jackbolt tensioners with hex nuts How does Superbolt tensioners compare to hex nuts? Let's look at the design aspect, safety, installation times and galling issues. Více informací
Knowledge Think Big Superbolt tensioners - from an eureka moment in a US steel mill to a widely used tensioning solution, securing satellites to submarines to the Large Hadron Collider at CERN. Více informací
Knowledge Superbolt: A simple idea with global potential A culture of innovation led to new product lines based on the Superbolt multi-jackbolt tensioner design. Více informací
Knowledge Fastener quality: All in the details Quality fasteners are essential for safe, economic designs. But what determines quality, and how do we make sure we obtain good quality? Více informací
Knowledge Mythbusters: If the clamp length is at least five times the bolt’s diameter, then the joint will not loosen from vibration Is that true or false? Více informací
Knowledge Do Higher Grade Bolts Have Lower Stretching Ability? The higher the bolt grade, the lower the stretching ability of the bolt. Is this true? Více informací
Knowledge Is Extension Socket the Best Bolt Locking Method? Extension sockets or Nord-Lock washers? Let us take you through the key parameters so that you can make the right choice. Více informací
Knowledge Get value for life: Proper bolt securing may reduce costs 1,000 times While there may be cheaper alternatives, choosing the right bolting solution will pay you back many times over in the long term. Více informací
Knowledge Is Tab Washer the Best Bolt Locking Method? Tab washers or Nord-Lock washers? Finding the ultimate bolt securing system is no easy task. Here is a guide to making the right choice. Více informací
Knowledge Talking the Torque Experienced assembly technology engineer Bernard Tollet discusses optimising torque and clamp load, and the various ingredients concerning tightening technologies. Více informací
Knowledge Offshore special tensioner This tensioner was developed for the unique needs of the offshore industry. Více informací
Knowledge Is Nylon Insert Nut the Best Bolt Locking Method? How do Nord-Lock washers compare with nylon insert nuts? This guide lists key parameters to help you make the right choice. Více informací
Knowledge It’s All About the Coating The coating is a fastener’s skin – a protective shell that preserves the steel that it encases. But what types of coatings are there and what are their purposes? Více informací
Knowledge Introducing the Junker Test According to DIN 65151, the Junker vibration is considered to be the most rigorous method for testing bolted joints. Více informací
Knowledge Is Locking Wire the Best Bolt Locking Method? Safety wire/locking wire or Nord-Lock washers? Let us take you through the key parameters so that you can make the right choice. Více informací
Knowledge How to Pick the Right Bolt Size? A common mistake is to oversize the bolt, which can result in costly failure and censure. What should you take note when choosing the right bolt size? Více informací
Knowledge Is Adhesive the Best Bolt Locking Method? Adhesives or Nord-Lock washers? Finding the ultimate bolt securing system is no easy task. Here is a guide to making the right choice. Více informací
Expander customer case Knowledge Hidden costs of pivot maintenance and how Expander cuts them Learn more about aspects of pivot pin maintenance that affect the total cost of ownership, and gain more appreciation for what the Expander® System does. Více informací
Nord-Lock Group’s global Technical Centers offer expert testing and support for safe bolted connections. Knowledge Expert Support at Nord-Lock Group's Global Technical Centers Discover expert support at Nord-Lock Group’s Global Technical Centers. Access advanced testing, torque-tension analysis, and professional guidance for secure and reliable bolted connections worldwide. Více informací
Knowledge Custom-Designed Superbolt® Tensioners for Any Application Whatever the size, location, operating environment, preload requirement, or application – Superbolt industry-leading tensioning technologies secure any bolted joint. Více informací
People Superbolt’s Culture of Innovation and All Eyes On Smart Bolting From an industrial fix to a global brand synonymous with multi-jackbolt tensioning, and now predictive maintenance with digital bolting. Více informací
People Behind Every Great Gain Is a Thousand Hidden Efforts An appreciation of the fastening technologies that hold our world together, and the people behind them. Více informací
People Christoph Seeßelberg: What is so Fascinating about Crane Tracks? Bolted joints are a crucial aspect of crane maintenance, keeping whole production lines functioning Více informací
People Elena Moral Elena Moral has spent almost two decades as an engineer within the railway industry at Talgo, a Spanish manufacturer of high-speed trains. During that time, she won the 2019 Women in Construction a... Více informací
People Focusing on Dropped Objects Preventions Allen Smith travels the world to deliver comprehensive familiarization and coaching on behalf of DROPS Více informací
People “Instrumented bolts would be really interesting for the industry” “Instrumented bolts would be very interesting for the industry” Více informací
People Hydropower: Relying on Superbolt for 30 years When it comes to long-term Superbolt users, American Mike Bruno is hard to beat. More than 30 years ago, he was involved in one of the earliest installations of Superbolt tensioners in a hydropower... Více informací
People Offering a greater field of solutions For Fred Heaton, what started out as a hobby in 1999 quickly grew into a thriving business specialising in hydraulic bolt tensioners. Now Boltight has been acquired by the Nord-Lock Group, in a mov... Více informací
People Fastener peace of mind Understand the risk of hydrogen embrittlement and ensure good sourcing of fasteners by questioning quality-related issues and manufacturer's capabilities. Více informací
People A unique technology is emerging Nord-Lock Group interviews Laurence Claus, an expert in fastener and automotive supplier industries, with more than 25 years of experience. Více informací
People Chalmers takes the chequered flag Young engineers from Gothenburg’s Chalmers University of Technology – proudly partnered by Nord-Lock – have won the world’s largest student engineering competition. After ten months of designing, b... Více informací
People They didn’t think we could succeed An interview with Kurt Persson, Senior Advisor of Nord-Lock. With 50 years of experience, see how he describes the evolution of a humble family business to an international industrial company. Více informací
People Safety and quality are key Velan’s valves play a critical role in the world’s nuclear power stations. Jean-Luc Mazel, Industrial Director of Velan SAS, the French affiliate of Velan Inc, discusses safety, the aftermath of th... Více informací
People Knowledge Prevents Bolt Failure When Bill Eccles was a design engineer, he noted that people generally agreed on many different things. “However, as far as nuts and bolts were concerned, everyone had different information.” Více informací
People Improving offshore safety through certification With nearly a quarter of a century of experience testing bolted connections at Det Norske Veritas (DNV), Andrzej Serednicki has carried out dozens of highly demanding tests to ensure the highest sa... Více informací
People Safe operations in extreme conditions A few years ago, Stefan Ladenburger took over as Managing Partner of Holzwerke Ladenburger, representing the third generation of this family business. Více informací
People Providing an antidote to disaster Philippe Nouaille is responsible for overseeing how nuclear plants could be better secured against earthquakes – the natural disaster which gives nuclear engineers their biggest headaches. Více informací
News Prestigious Red Dot Design Award to Nord-Lock Group Nord-Lock Group receives one of the world’s most prestigious design awards, Red Dot Award, for the Superbolt Tool, which wins ”Best Product Design 2020” in the Innovation category. Více informací
News Nord-Lock Expands and Future-Proofs Its Production With the expansion, Nord-Lock will create new and more efficient production lines, introduce new machines with more automation, as well as offering better premises for optimized workflows. Více informací
News The Next Level of Smart: Superbolt Load-Sensing Tensioner New ways to offer unprecedented security and bolting convenience. The first of these Industry 4.0 innovations has arrived: the Superbolt Load-Sensing Tensioner with built-in preload monitoring system. Více informací
News Boltight TSR+ Tensioner The new Boltight TSR+ auto return tensioner is designed for simple and reliable operation. It is particularly suitable for the oil and gas industry, bringing benefits such as durability and higher safety. Více informací
News Nord-Lock Group and Mitt Liv enter a long-term partnership for a diverse labor market Nord-Lock Group, a global leader in secure bolting solutions, has started a collaboration with Mitt Liv in Malmö to contribute to a more inclusive labor market. The partnership is a strategic step... Více informací
News Nord-Lock introduces an extended wheel nut range Nord-Lock wheel nut is available from sizes M16-M24, offering increased safety for a wide range of on-and off-road vehicles. Více informací
News Nord-Lock steel washers promise highest salt spray resistance on the market Nord-Lock wedge-locking washers guarantee high corrosion resistance after intensive testing of 1000 hours neutral salt spray test according to ISO 9227 Více informací
News Boltight embraces augmented reality tooling Have you ever wished you could try out a tool without the hassle of carrying it around on site? Now you can experience working with a tensioner and augmented reality directly from your mobile device. Více informací
News Nord-Lock Group Wins Prestigious Export Award The Export Hermes award is given by the Swedish Fund for Export Development to companies that have achieved exceptional export success, thereby contributing to Sweden’s prosperity. Více informací
News Introducing Superbolt MJTT We are showcasing our wide range of solutions including a new tool from Superbolt at Offshore Energy ‘18..  Více informací
News The Fastener Dimension Guide is here Rather than trying to find measurements from a table in standard sheets, you can simply enter the size and length of a bolt and find all the dimensions that conform to ISO standards. Více informací
News Introducing Torquelator by Nord-Lock Torquelator by Nord-Lock calculates pre-load and corresponding torque for bolted joints secured with Nord-Lock washers. Více informací
News Traceability down to material and batch of axle A dot pin marking that includes the Expander System brand will be fixed on each pivot pin, offering added value for users as it improves traceability and control. Více informací
News Extended temperature range for usage of Nord-Lock steel washers Nord-Lock steel washers have been approved for temperatures down to -50°C by an independent test institute Swerea Kimab and TÜV. Více informací
News Nord-Lock Group introduces Lifetime Warranty The Nord-Lock Group is proud to be the first bolting solutions partner to offer a full lifecycle warranty across all of its technologies. Více informací
News Simplify assembly with Nord-Lock combi bolt washers With our combi bolt washers you can improve assembly efficiency, accuracy and safety while at the same time keeping inventory and part count at a minimum. Více informací
News Life in the engineering fast lane Attracting young talent to the manufacturing industry is getting increasingly challenging. So what can companies and academia do to attract young talent? Více informací
News Nord-Lock Group acquires Expander Group Nord-Lock Group has acquired the Expander System, which specializes in the design and manufacturing of expandable pivot pin system. Více informací
News A new range of washers for the steel construction industry Nord-Lock Steel Construction (SC) washers specially designed for use in structural steel parts and to fit HV sets and HR sets. Více informací
News Nord-Lock supports Mexican students in global competition Nord-Lock Group sponsored team of engineering students has won first place in the Mexican national final of the Human Powered Vehicle Challenge. Více informací
News Nord-Lock Group acquires Boltight Limited Nord-Lock Group acquires Boltight Limited, a leading hydraulic bolt tensioning company with a global reputation for innovation and excellent quality. Více informací
Videos Video: Get to know Expander System Expander System pivot pins allow you to avoid costly and time-consuming repairs that would normally involve welding and line boring. Watch now
Videos Video: When Safety Really Matters The roller coaster at Tusenfryd Amusement Park in Oslo has over 1 million bolted joints. They have installed Nord-Lock washers to prevent bolt loosening. For critical bolted connections, there is no room for error. Více informací
Videos Video: Bolt Behavior and Its Elastic Limits What are the effects when tightening a nut or bolt? Watch this video to find out more. Watch now
Videos Video: How Does the Nord-Lock Washer Work? Nord-Lock washers secure bolted joints with tension instead of friction. Find out more about the locking method in this explanation video. Watch now
Installing EzFit expansion sleeve coupling bolt Videos Video: Installing Ezfit Mechanical Expansion Bolts Superbolt EzFit mechanical expansion bolts were able to solve a problem when standard fitted coupling bolts were causing severe damage to the turbine couplings. Watch now
Videos Video: Boltight Typhoon bolt tensioners Widely used within Wind industry for the need of high-load, low profile solution for space-restricted applications that demand high and accurate preloads. Watch now
Videos Video: Boltight easy piston retraction pump Boltight’s piston retraction system takes the hard work out of reseting bolt tensioner piston stroke. Depending on the design of the tensioner, the pump will give automatic piston retraction or ass... Watch now
Irish Rail safely secured with Nord-Lock washers Videos Video: Irish Rail safely secured with Nord-Lock washers Safety is key on the railways. Irish Rail replaced the locking-wire mechanism on their wheel sets with Nord-Lock washers, watch them share their experience. Watch now
Hydraulic tensioners for compact flanges Videos Video: Hydraulic tensioners for compact flanges Boltight’s Xtra Load range of bolt tensioners is used extensively in the offshore oil and gas industry for bolting compact flanges. Watch now
Videos Video: Tightening Boltight multi stud bolt tensioners Boltight multi stud bolt tensioner is designed to provide high and accurate preload within a minimum diameter envelope. Watch now
Videos Video: Installing a Boltight hydraulic bolt tensioner Designed with the benefit of more than 30 years experience in the field, Boltight has created a range of tools to meet the challenge of today’s hydraulic bolt tensioning requirements. Just watch ho... Watch now
Videos Video: Boltight subsea hydraulic bolt tensioners Subsea tensioners from Boltight conforms to the requirements of European Pressure Equipment Directive. They save time, money and protects the environment. Watch now
Videos Are Nord-Lock Wedge-Locking Washers Reusable? It is normally okay to reuse Nord-Lock wedge-locking washers, but you must inspect their condition for signs of wear and tear first. Watch now
Videos Video: How multifunctional wedge-locking works? Designed with a combination of Nord-Lock wedge-locking to protect against spontaneous bolt loosening, and a spring effect to counter slackening due to settlement and relaxation.  Watch now
Videos Video: Verifying the Locking Function of Nord-Lock Washers In this video, we focus on the steps to verify the wedge-locking function of the Nord-Lock washers. Watch now
Videos Video: Nord-Lock Washers in the Junker Vibration Test Nord-Lock washers are compared with other locking methods in the Junker vibration test, which is considered to be the most severe vibration test for bolted connections. Watch now
Teaser_Video_EzFi Videos Video: Introduction to Superbolt Ezfit Mechanical Expansion Bolts EzFit mechanical expansion bolts offer tremendous radial expansion and joint clamping power in one bolting system. Watch now
ActSafe trusts the proven quality of Nord-Lock washers Videos Video: ActSafe trusts the proven quality of Nord-Lock washers Securing bolted joints is about safety for installers and the public alike. Watch now
Videos Video: Superbolt Multi-Jackbolt Technology Superbolt bolt tensioning eliminates unsafe and time-consuming methods when tightening large bolts. Watch now
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