Çelik Yapı Pulları

Çelik Yapı Pulları

Nord-Lock Group Nord-Lock Group Hakkında Ürünler Çelik Yapı Pulları Teknik Kılavuz
Nord-Lock, cıvatalı bağlantılar ciddi düzeyde titreşime ve dinamik yüklere maruz kalındığında bile bunları sabitleyen, orijinal kamalı kilitleme teknolojisini yarattı. Cıvata başı ve somunun altında bulunan kamalar sayesinde ürünlerimizin istenmeden gevşemesi imkansızdır.

Joint Guide

Nord-Lock SC-washers can be used with HV / HR bolts and nuts.

Through-holes
Through-holes require the use of two pairs of Nord-Lock SC-washers. One pair for securing the bolt and a second pair for securing the nut. Turn both fasteners in order to close the cams on both washer pairs before tightening to minimize settlements. Keep the bolt secure whilst tightening the nut.

Designs where Nord-Lock SC-washers are not recommended:

  • With plain washers
  • When mating surfaces are not locked in place
  • When mating surfaces are harder than the washers
  • With very soft mating surfaces — for example, wood and plastic
  • For applications with extremely large settlements
  • When there is no clamping force in the joint

Torque Guidelines

Note that the torque guidelines below only apply to HV bolts with NLSC washers.

Washer
size

 

Reduced preload force
F *
[kN]

Modified
torque method
Torque 
M
[Nm]

 

Modified combined
method [torque + angle]
Pre-torque
M *
[Nm]

Securing
effect
Minimum torque
M

[Nm]
NL12SC 45 130   100 80
NL16SC 90 330   250 200
NL20SC 145 660   490 360
NL22SC 170 850   640 520
NL24SC 200 1100   825 640
NL27SC 260 1600   1220 1000
NL30SC 315 2150   1650 1320
NL36SC 460 3750   2800 2240
   

*Tightening conditions are specified in ETA-13/0246 for HV bolts, grade 10.9.

Required angle of further rotation

Clamp length angle part tum
t < 2d 45° 1/8
2d ≤ t < 6d 60° 1/6
6d ≤ t ≤ 10d 90° 1/4
10d < t No recommendations
Tightening angles when using the combined method varies depending on the clamp length, (t), in relation to bolt diameter, (d).

More insights and references

Durable Bolted Joints in Steel Construction Nord-Lock's steel construction experts share vital experience and knowledge to achieve durable bolted joints for steel structures. Daha Fazlasını Oku
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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... Daha Fazlasını Oku
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. Daha Fazlasını Oku

Nord-Lock product range

Nord-Lock wedge-locking washers prevent bolt loosening Nord-Lock Pullar Aşırı titreşime ve dinamik yüklere maruz kalan cıvatalı bağlantılar için kamalı kilitlemeli güvenlik Daha Fazlasını Oku
Nord-Lock X-series washer combines wedge-locking with an exceptional spring effect to secure against multiple bolt loosening factors Nord-Lock X-serisi Pullar Anlık cıvata gevşemesi ve açılmasına maruz kalan kritik cıvatalı bağlantılar için maksimum güvenlik Daha Fazlasını Oku
Nord-Lock steel construction washers are designed for bolted connections in steel structures Nord-Lock Çelik Yapı Pulları HV ve HR setleri dahil olmak üzere çelik yapı uygulamalarında kullanılan cıvatalar ve pullar arasında en iyi temas Daha Fazlasını Oku
Nord-Lock wheel nuts safely secure wheels on on-road and off-road heavy vehicles Nord-Lock Bijon Somunları Zorlu koşullarda çalışan ağır araçlarda tekerleğin gevşemesini önleyen yüksek kenetlenme kuvveti Daha Fazlasını Oku
Combi bolt washers from Nord-Lock are specifically designed to be captivated on a bolt, known as SEMS Nord-Lock Combi Cıvata Pulları Cıvataya kalıcı bağlanma (SEMS) sayesinde uygulamalar için ek bir güvenlik katmanı Daha Fazlasını Oku
Customized washers from Nord-Lock can include special materials, measurements, sizes, coatings or changes in geometry Nord-Lock Özel Çözümler Sizin benzersiz uygulama gereksinimleriniz için özel tasarlanmış cıvatalama çözümleri Daha Fazlasını Oku

Secure connections

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