Angular Contact Ball Bearing, Bearing Industry Number 3210/5210, Bore Diameter 50 mm, Cage Material Steel, Closure Open, Contact Angle 30 Degrees , Contact Bearing Type Angular Contact, Matched Bearing Type Not Matched/Single Bearing, Maximum Speed 6,300 RPM, Maximum Temperature 125 Degrees C, Minimum Temperature -20 Degrees C, Number of Rows Two, Outside Diameter 90 mm, Overall Width 30.2 mm, Ring Material Alloy Steel, System of Measurement Metric, ABEC Rating 1