Needle Roller Bearing, Bearing Industry Number 5520, Bearing Design HK, Bore Diameter 55 mm, Cage Material Steel, Closure Open, Compatible Ring Manufacturer Part Number LR50X55X20,5, Full Complement No, Lubricant Material Grease, Oil, Maximum Speed 2,900 RPM Grease, 4,850 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 63 mm, Overall Width 20 mm, Ring Material Alloy Steel