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FAFNIR SUPERPRECISION BEARINGS

Ceramic Hybrid Bearings

A ceramic hybrid bearing is a combination of ceramic balls with standard steel rings and retainer material appropriate for the application.

Ceramic Bearing Benefits

  • High Speed

Up to three million DN with reduced skidding, wear and heat generation; grease-lubricated hybrids up to one million DN.

  • Extended Fatigue Life

Three to five times greater than steel when properly applied.

  • Marginal Lubrication

Unique tribological features enhance operation under low lubrication conditions and extend life and speed capabilities of lubricants.

  • Corrosion resistance

Virtually inert silicone nitride resists corrosion and galling while thin-dense-chrome (TDC) coating may be used to enhance hybrid results.

  • High Stiffness

Modulus of elasticity 50 percent greater than steel increases bearing rigidity.

  • Low Torque

Low friction, even under marginal lubrication, with extremely fine surface finishes of .1 to .2 micro-inch AA.

  • Long Wear Life

High hardness of Rc78 greatly extends bearing wear characteristics.

  • Light Weight

60 percent lighter than steel, reducing centrifugal forces and overall system weight.

  • Special Properties All silicon nitride components are:

    • non-magnetic

    • electrically insulative

  • Increased Speed

Provides over a 20% increased speed factor over steel balls.

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Applications

  • Aerospace

    • gas and air turbines

    • gearboxes

    • auxiliary power units/generators

    • valves and nozzles

  • Machine Tools

    • ultra and high-speed milling spindles

    • ultra and high-speed grinding spindles

    • extended life units

  • Instruments

    • gyro, gimbal and platform

    • spectroscopy

  • Biotechnology

    • rotating anode

    • medical centrifuge

  • Defense

    • space

    • radar

    • missiles

  • Automotive

    • turbochargers

  • General Industry

    • pumps and compressors

    • reactors and mixers

    • chemical processing

    • cryogenic

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