Needle Roller Bearing, Bearing Industry Number 408, Bearing Design HK, Bore Diameter 4 mm, Cage Material Steel, Closure Open, Full Complement No, Lubricant Material Grease, Oil, Maximum Speed 25,500 RPM Grease, 42,500 RPM Oil, Maximum Temperature 140 Degrees C, Minimum Temperature -30 Degrees C, Needle Bearing Type Drawn Cup Needle Roller Bearing, Number of Rows One, Outside Diameter 8 mm, Overall Width 8 mm, Ring Material Alloy Steel, Roller Material Alloy Steel, Seal Type Not Applicable