How do Superbolt® tensioners withstand cycle loading and shock loading?
Just like a hero who stands strong against every blow, Superbolt® multi-jackbolt tensioners are engineered to withstand cycle loading and shock loading without compromising reliability. This article explains how Superbolt tensioners add elasticity to the joint and distribute load evenly, minimizing stress concentrations and reducing fatigue.
Superbolt is known for its innovative multi-jackbolt tensioner (MJT) technology, which simplifies the tensioning of large bolts by using smaller "jackbolts" to evenly distribute the load and generate high clamping force with low torque inputs. This allows for safer, more efficient, and easier tightening of large, bolted joints in industrial applications. Thanks to its unique design, MJTs can handle heavy loads in many different environments, including cycle loading or shock loading.
Cycle loading is any type of load applied to a component in a repeating pattern for an extended period of time. The frequent application of the load can lead to fatigue in the material, one of the leading reasons components eventually fail. As a material experiences fatigue, its structural integrity gradually deteriorates due to repeated stress, causing microscopic cracks. These defects, if not properly addressed and fixed, can lead to component failure and unsafe working conditions.
Shock loading involves a sudden and drastic increase in load, similar to a “hammering” effect. The abrupt and forceful load can create sudden spikes in stress that are significantly higher than the initial force. This can be particularly dangerous in tensioning systems because it can multiply the applied force far beyond the initial weight or intended torque. Like a villain in a comic book, shock loading can cause extensive damage and failure in your facility.
While these types of loading are quite different from one another, they are similar in regard to damaged components, material fatigue, and in extreme cases, structural failure. Superbolt MJTs are engineered to maintain secure, reliable bolted joints under cyclic and shock loading through several key principles.
Their design adds elasticity to the joint, effectively increasing the clamping length and enhancing the joint’s ability to withstand dynamic cycles. The added elasticity also helps maintain preload in equipment subject to vibration, pulsation, or reciprocating motion. Furthermore, the MJT design distributes the load evenly across the thread engagement, preventing stress concentrations in the first few threads. This even load distribution reduces the risk of bolt fatigue, breakage, and failure over time.
In summary, Superbolt MJTs provide a highly effective solution for ensuring secure bolted joints, even under cyclic and shock loading conditions. By enhancing joint elasticity and distributing load evenly across the threads, MJTs minimize stress concentrations and significantly reduce the likelihood of fatigue and failure. This advanced design improves the strength, reliability, and safety of bolted connections, delivering superior performance in demanding industrial applications.