Model Number: 22310CA/W33 22312CA/W33 Structure: Spherical Precision Rating: P0 Number Of Rows: Double Row Seals Type: RS Rotate Speed: Z3 Material: Bearing Steel Feature: High Precision, High Speed, Low Noise Application: Automotive, Tractor, Construction, Machinery, Rolling Mill https://www.bearing-manufacturer.com/product/selfaligning-ball-bearings/high-precision-processing-machinery-selfaligning-ball-bearing.html