When steel bearings cannot survive

Full ceramic bearings carry the load entirely on ceramic rings and balls - no steel anywhere. That gives four properties no steel bearing can match:

• Temperature: ZrO2 to 500 C, Si3N4 to 800 C with suitable retainer/grease-free design
• Corrosion: immune to acids, alkalis, salts and seawater - even molten-metal splash
• Electrical insulation: no arcing damage in VFD-driven motors (shaft-current proof)
• Non-magnetic & lightweight: ~40% of steel density, no magnetic disturbance

Material selection guide

Retainer and lubrication options

PTFE, PEEK or no-retainer full-complement designs; dry-running, high-temp grease, or solid lubricant (MoS2) fill. Our engineers size the internal clearance for the real temperature gradient so the bearing does not seize at cold start.

Browse the standard range in our ceramic bearing catalog, including 6000/6200/6300 series, flanged variants and ceramic sleeve bushings.

Ready to source? Request a quotation or email [email protected] - drawings, samples and OEM/ODM projects welcome. MOQ from 1 piece for prototypes.

Source: KMK Bearing