CNC raceway grinder for automobile hub bearing inner ring

• • • • • • • It is used for grinding inner raceways of the 1st, 2nd and 3rd generations automobile hub bearings (grinding the raceway, diameter and small end face simultaneously)
              

              Main features:
              1. Adopting Japan MITSUBISHI full digital AC servo control system.
              2. Centerless layout, fixed grinding wheel support, workpiece frame feeding and automatic compensating of dresser.
              3. Diamond dressing wheel.
              4. High rigidity, high precision dynamic and static pressure spindles are used, and non-contact shaft diameter and sleeve are rotating at high speed in order to realize high speed grinding at 60m/s.
              5. Two manipulator arms can automatically load and unload, which is reliable and easy for adjustment without collision.
              6. Electromagnetic centerless clamps are used for the grinder, and the speed of the workpiece shaft can be adjustable by variable frequency.

              Main specifications:
              1. Workpiece O.D.(mm) φ50-φ120
              2. Workpiece width(mm)20-50
              3. Dimension deviation(mm)±0.008
              4. Roundness(mm)0.002(O.D. roundness≤0.001mm)
              5. Groove parasitism(mm)0.005
              6. Roughness Ra(um)0.32
              7. Concentricity(mm)0.003
              8. Parallelism from bottom of groove(mm)0.002
              9. Roughcast allowance 0.30-0.50
              10. Cycle time(taking DAL4074一C/01 as an example)： 55-65 sec/piece.