Needle Roller Bearing Bearing Industry Number 45 Bearing Design SCE Bore Diameter 1/4 in Cage Material Steel Closure Open Full Complement No Lubricant Material Grease Oil Maximum Speed 25 000 RPM Maximum Temperature 284 Degrees F Minimum Temperature -22 Degrees F Needle Bearing Type Drawn Cup Needle Roller Bearing Number of Rows One Outside Diameter 7/16 in Overall Width 0.313 in Ring Material Alloy Steel Roller Material Alloy Steel Seal Type Not Applicable