Description 8x22x7mm Ceramic Bearing Zirconia Oxide 608 Full Ceramic Bearing ZrO2 Ball BearingSpecifications Material CeramicInner Diameter 8mmOuter Diameter 22mmThickness 7mmQuantity 1pcFeatures Deep groove full ceramic ball bearing Because of the unique ceramic materials vacuum oil free self lubricating property in ultra high vacuum environment zirconia ceramic bearings can overcome the plain bearing can not realize the problems of lubrication With corrosion resistance cold resistance stress resistance to pressure small elastic thermal conductivity light weight the advantages of small friction coefficient Applications Bicycle Medical equipment optical instruments printing machinery machine tools high speed motor low temperature engineering food processing machinery Package Included 1pc x 608 Full Ceramic Bearing Note 1 Please allow a bit error due to manual measurement pls make sure you do not mind before you bid 2 Due to the difference between different monitors the picture may not reflect the actual color of the item Thank you More Details