Angular Contact Ball Bearing, Ball Material Alloy Steel, Bearing Industry Number 7218, Bore Diameter 90 mm, Cage Material Brass, Closure Open, Contact Angle 40 Degrees , Contact Bearing Type Angular Contact, Lubricant Material Grease, Oil, Matched Bearing Type Not Matched/Single Bearing, Maximum Speed 5,000 RPM, Maximum Temperature 120 Degrees C, Minimum Temperature -40 Degrees C, Number of Rows One, Outside Diameter 160 mm, Overall Width 30 mm, Ring Material Alloy Steel