Common issues

Shell bolts on top and bottom assemblies experience severe vibration and fatigue, which often leads to loss of clamp load and joint failure.

Solution: Superbolt® allows safe, consistent clamping on large crusher shells without the need for excessive torque.

Spider joint bolts are critical to crusher integrity but face extreme vibration, impact loads, and thermal cycling. Traditional bolting can lead to preload loss, safety risks, and difficult access due to confined spaces around the spider housing.

Solution: Superbolt tensioners deliver accurate, safe preload using only hand tools—eliminating the need for high-torque equipment or complex reaction fixtures and simplifying maintenance in tight spaces.

Mantle and spider joint bolts require high and uniform preload but are difficult to tighten accurately due to confined access and large sizes.

Solution: Boltight® hydraulic tensioners deliver uniform preload even in challenging or tight assembly locations, reducing maintenance and improving performance.

Foundation bolts are stressed by continuous crushing force, and loosening can lead to misalignment, cracking, or unplanned downtime.

Solution: Superbolt tensioners ensure accurate preload on crusher foundation bolts, preventing loosening from vibration and impact while eliminating the need for high-torque equipment during installation and maintenance.