Needle Roller Bearing Bearing Industry Number 148 Bearing Design JTT Bore Diameter 7/8 in Cage Material Steel Closure Double Sealed Full Complement No Lubricant Material Grease Oil Maximum Speed 14 000 RPM Oil 8 700 RPM Grease Maximum Temperature 250 Degrees F Minimum Temperature -5 Degrees F Needle Bearing Type Drawn Cup Needle Roller Bearing Number of Rows One Outside Diameter 1 1/8 in Overall Width 0.5 in Ring Material Alloy Steel Roller Material Alloy Steel