Needle Roller Bearing Bearing Industry Number 45 Bearing Design B Bore Diameter 1/4 in Cage Material Not Applicable Closure Open Full Complement Yes Lubricant Material Oil Maximum Speed 10 000 RPM Maximum Temperature 248 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