Grinding balls such as Allmax® grinding balls are extremely robust and have a long working life. With a grinding ball sorting machine from Christian Pfeiffer, their use becomes even more efficient. This is because the grinding balls can be precisely checked after passing through the sorting machine.
Gunn Machine Tool Co. has designed a spindle taper insert to repair machine spindles, such as those found in large horizontal boring mills, when damage is more severe and cannot be repaired by grinding alone. Inserts can be made for drawbolt or pullstud type retention systems.