Angular Contact Ball Bearing Ball Material Alloy Steel Bearing Industry Number 7006 Bore Diameter 30 mm Cage Material Phenolic Closure Open Contact Angle 17 Degrees Contact Bearing Type Angular Contact Matched Bearing Type Duplex Maximum Speed 30 000 RPM Maximum Temperature 120 Degrees C Minimum Temperature -40 Degrees C Number of Rows One Outside Diameter 55 mm Overall Width 13 mm Ring Material Alloy Steel System of Measurement Metric ABEC Rating 7 Cage Type Stratified