Explore the Amazing Collection of Fidget Spinners from Tonado-Spinners What's Ceramic Hybrid Bearing Ceramic hybrid bearings have steel races and ceramic balls. Ceramic balls are suitable for applications where high loads, high speeds and extreme temperatures are factors. Long life and the need for minimal lubrication make this material appropriate for extreme applications. Ceramic is non-porous, non-magnetic, non corrosive and lighter than steel. In ball form, ceramic balls are also harder than steel and because ceramic balls are non-porous they are virtually friction-less and capable of spinning faster than steel balls. What's Silicon Nitride Ceramic Silicon nitride is a chemical compound of the elements silicon and nitrogen, with the formula Si3N4. It is very hard (8.5 on the mohs scale). Silicon nitride ceramics have good shock resistance compared to other ceramics. Therefore, ball bearings made of silicon nitride ceramic are used in performance bearings. A representative example is use of silicon nitride bearings in the main engines of the NASA's Space Shuttle. 100% Satisfaction Guarantee We offer 60 day warranty covering manufacturing and material defects. If you're not satisfied with your purchase for any reason, you will receive a full refund.
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