Bearing grinding with EHWA CBN grinding tools

Rolling bearings are made up of three main components: the inner ring, outer ring and rolling element. Bearings have the task of fixing shafts or axes and enabling the rotation of shafts.

Rolling bearings are indispensable in many industries today and vary greatly in size and design. Bearing components are very often ground and honed, and the running surfaces in particular must be machined with high precision.

EHWA has been supplying the bearing industry with high-quality grinding and honing tools for years, covering all machining processes that are common in this industry. After years of development and testing, EHWA has developed application-specific bonds that meet every requirement.

EHWA CBN-Schleifwerkzeuge für Lagerschleifen

Grinding / honing areas - Bearings:

  • 1. Inner ring IR / bore grinding

  • 2. Inner ring IR / raceway grinding

  • 3. Outer ring AR / Raceway grinding

  • 4. Outer ring AR / board grinding

  • 5. Outer ring AR / face grinding

VBME | EHWA grinding wheels in ceramic bond

Case study - bore grinding:

  • Grinding wheel: 30m/s – 80m/s

  • Specification: B76C100VBME

  • Workpiece stock removal: 0.1 mm/D –  1 mm/D

  • Total dressing amount: 3 µm – 30 µm

  • Dressing ratio “qd”: 0.4 – 1,6 im Gleichlauf  / 0.5 – 1,2 im Gegenlauf

  • Total dressing amount: 3 µm – 30 µm

  • Dresser: Rollerdresser:

  • Coolant: Oil or emulsion

Lifetime EHWA CBN grinding wheel:

Advantages of EHWA CBN grinding wheels:

  • Very good removal rates

  • Low grinding load

  • Reduction of mechanical and thermal stress

  • Stable and precise grinding performance for the highest quality

  • high surface quality, excellent cylindricity and high dimensional accuracy.

AL, SL, HM | EHWA shank and types

Shank: Ceramics

Shank: Steel / Al

Shank: Grinding wheel + spindle

Shank: Threaded spindle

VHWPN | EHWA honing stones in ceramic bond

Case study - Raceway honing:

  • Workpiece speed: 100 – 200 U/min

  • Workpiece: Tapered roller bearing - inner ring

  • Stock removal: 5㎛

  • EHWA-Spezifikation: B2400K120VHWPN

Mikrostruktur EHWA Honsteine
EHWA Honen_Innenring_Lager

  • long lifetime = high productivity!

    - 5-10 times longer lifetime than conventional honing stones

    - Shorter machining times

    - Large removals possible

  • Improving performance

    - Very high surface quality

    - Consistent performance = high quality reduces waste

  • Environmental protection

    - EHWA tools do not contain sulphur
    - Reduction in disposal costs