The machine is semiautomatic groove superfinishing machines for angular contact ball bearing rings ，which is applied to superfinish 6 th，7th kinds of inner or outer bearing ring groove with P4 class accuracy class1.Adopt the semiautomatic two-step processing technology of using single end for rough or finish processing2. Implemented with PLC control system and touch screen，the system is reliable and easy to operation3. The speed of the workpiece axis and the oscillation are regulated through AC frequency converter．4. Using centreless support,Website:://.zys-bearing.com, clamping the end .5. Enable individually adjusts the pressure of rough and finish processing.6. Enclosed machine shield avoids the revealing of the superfinishing fluid.Type3MB30103MB30203MB3030Processing scopeOD(mm)50-65100-200200-300ID(mm)10-6520-110100-200Contact angle adjustment range0-400-400-40The total power(KW)P4P4P4Dimensions(mm)Weight(kg)350045004500