Needle Roller Bearing Bearing Industry Number 810 Bearing Design HK Bore Diameter 8 mm Cage Material Steel Closure Open Compatible Ring Manufacturer Part Number JR5x8x12 Full Complement No Lubricant Material Grease Oil Maximum Speed 20 000 RPM Grease 31 000 RPM Oil Maximum Temperature 120 Degrees C Minimum Temperature -20 Degrees C Needle Bearing Type Drawn Cup Needle Roller Bearing Number of Rows One Outside Diameter 12 mm Overall Width 10 mm Ring Material Alloy Steel