Needle Roller Bearing, Bearing Industry Number 509, Bearing Design HK, Bore Diameter 5 mm, Cage Material Steel, Closure Open, Full Complement No, Lubricant Material Grease, Oil, Maximum Speed 23,500 RPM Grease, 39,000 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 9 mm, Overall Width 9 mm, Ring Material Alloy Steel, Roller Material Alloy Steel, Seal Type Not Applicable