1pc 6806-2RS Sealed Full Ceramic Bearing ZrO2 Ball Bearing 30x42x7mm Description: Full ceramic bearing with diamagnetic electrically insulating, wear resistance and corrosion resistance, not self lubricating, high temperature resistance, cold and other characteristics, can be used in extremely harsh environment and special conditions.   Features: 1. Hardly corroded, the ceramic rolling bearing is suitable for working under severe conditions filled with corrosive medium. 2. Due to electrical resistance, electrical insulation, can avoid arc damage bearings, can be used in a variety of insulation of power equipment. 3. Since the effect of thermal expansion and contraction of ceramics is smaller than that of steel, the bearing can be allowed to work in an environment where the temperature difference changes more severely. 4. Since the elastic modulus of ceramics is higher than that of steel, it is not easy to deform when subjected to stress. So it is advantageous to increase the working speed and achieve higher accuracy. 5. Because of no magnetic, it can reduce premature bearing flaking, big noise. Available in the demagnetization device, precision instruments and other fields.   Specifications: Model: 6806-2RS Balls: ZrO2 Ceramic Inner/outer races: ZrO2 Ceramic Color: White Dimensions: 30x42x7mm/1.2x1.7x0.3in ID (inner diameter): 30mm/1.2in OD (outer diameter): 42mm/1.7in Thickness: 7mm/0.3in Weight: Approx. 27g   Package includes: 1 x Full Ceramic Bearing