Bearing Grinding
Bearing grinding places the highest demands on dimensional accuracy, surface quality, and process reliability. With highly hardened bearing steels such as 100Cr6, CBN tools enable stable machining at high cutting speeds.
Process
EHWA CBN grinding tools are engineered specifically for each process – from rough to fine finishing. Defined grit distributions, matched bond systems, and precise tool design achieve tight tolerances and functional surfaces.
Typical applications are external and internal grinding of bearing rings, raceway grinding, and combined processes on cylindrical and non-circular grinding machines.
What the process gains
Longer dressing intervals
Higher effective tool life, stable cycle times
Consistent surface quality
Reproducible roughness and form values
Reduced thermal load
Lower risk of grinding burn and tempering
Form and dimensional stability
Tight roundness, waviness, and dimensional tolerances
Recommended tools
| Product types | Cylindrical and profile grinding wheels, honing stones |
|---|---|
| Bond | VEWN and VBME – ceramic bonds, VHWPN for honing stones |
| Grit sizes | B76 – B151 |
| Dimensions | Ø up to 650 mm |
| Design | Customer-specific, based on machine, workpiece, and process |
Process example
Bore grinding of bearing rings
| Grinding wheel speed | 30 – 80 m/s |
|---|---|
| Workpiece stock | 0.1 – 1.0 mm / D |
| Total dressing amount | 3 – 30 µm |
| Dressing ratio qd′ | 0.4 – 1.6 up-cut · 0.5 – 1.2 down-cut |
| Dresser | rotating dressing roller |
| Coolant | Oil or emulsion |
Result
- Raceway honing with B2400 K120 VHWPN honing stones
- Tapered roller bearing inner ring, 5 µm stock, 100 – 200 rpm
- High tool life with consistent productivity
Figures from an approved customer process. Tools are always engineered around the machine, workpiece, and process of the individual case – these figures are evidence, not a guarantee.