Ceramic - Bearings - Technical

Ceramic vs Ceramic Hybrid

Ceramic Hybrid Bearings
Ceramic Hybrid Bearing

A Ceramic Hybrid Bearing is a bearing with Steel Races and Ceramic Balls. The balls are usually Si3N4 (Silicon Nitride), and the races can be either SAE52100 Chrome Steel or AISI440C Stainless Steel.

Benefits of the Ceramic Hybrid Bearing
  • Ceramic balls are harder often resulting in longer life.
  • Ceramic balls are usually smoother resulting in less vibration.
  • Ceramic balls are non-metallic meaning no magnetic build up and longer life due to no micro-welding between balls and races.
  • More tolerant of reduced lubrication.
(Benefits listed are subject to the prevailing conditions and may not apply to all applications)
Ceramic Bearings
Ceramic Silicon Nitride Bearing

A Ceramic Bearing is a bearing with Ceramic Races and Ceramic Balls. Ceramic Bearings may be either Si3N4 (Silicon Nitride - Grey) or ZrO2 (Zirconia - White).

Ceramic Zirconia Bearing
Benefits of the Ceramic Bearing
  • High Temperature. Cages fitted to Ceramic Bearings are often made from PTFE which can withstand temperatures up to 260oC.
  • With no cage the Zirconia Bearing can be used in temperatures exceeding 1000oC whereas Silicon Nitride can be used to around 700oC.
  • Silicon Nitride Bearings can run at loads and speeds approaching those of steel bearings. Zirconia is reserved for slower less loaded applications.
  • Inert to water and most chemicals.
  • Non magnetic
  • Can be used without lubrication
  • No heat build up due to friction
(Benefits listed are subject to the prevailing conditions and may not apply to all applications)

See also

You can find many types of ceramic bearings in the Bearing Shop Online Ceramic Bearings Online Catalogue pages.

The Small Parts and Bearings has a much larger range of engineering supplies.

Hobby and Engineering Supplies lists a smaller range of products and only the most popular items in each range. They also list many additional hobby specific categories.

For the best range of miniature and small bearings please try the Miniature Bearings Australia website. Miniature Bearings Australia also list a large variety of miniature engineering products.

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