XR496051, XR496052, JXR637050, XR637050, JXR652050, XR678052, JXR678054, JXR699050, XR736052, XR766051, XR766052, XR820060, XR820061, XR836050, XR855053, XR855056, XR882054, XR882055, XR882058, XR889058, XR889059, XR889060, XR897051

used in all kinds of machine tools, such as vetical lathe, grinding machine, surface plain gring machine, etc.