The purpose of chocking is to create a perfect coplanar mounting surface for the machine. RotaChock® fills the gap between the machine foot and its foundation and solves parallel and angular misalignment.
But this doesn't mean that a hardware misalignment can't still occur. Whether using RotaChock®, epoxy resins, or steel-fitted blocks, inadequate bolt stretch through hardware misalignment means a loose foundation bolt.
The Spherical Spacers accomplish two functions: creating hardware planes and bolt elongation. This solution comprises two parts with a smooth concave and convex curvature, resulting in an angular offset angle of 4°, which creates the hardware plane. The standard heights elongate the bolt and create extra clamping length.
The standard Spherical Spacers are manufactured from 42CrMo4 (DIN1.7225) and are Anti-Corrosion Enhanced for cost-effective corrosion protection.
Please check the RotaChock® Information Book for further details.