Angular Contact Ball Bearing, Ball Material Alloy Steel, Bearing Industry Number 7205, Bore Diameter 25 mm, Cage Material Phenolic, Closure Open, Contact Angle 15 Degrees , Contact Bearing Type Angular Contact, Matched Bearing Type Duplex, Maximum Speed 21,800 RPM, Maximum Temperature 120 Degrees C, Minimum Temperature -40 Degrees C, Number of Rows One, Outside Diameter 52 mm, Overall Width 15 mm, Ring Material Alloy Steel, System of Measurement Metric, ABEC Rating 7, Cage Type Stratified