Timken 3MM9122WICR Angular Contact Ball Bearing

The Timken 3MM9122WICR is a super precision single-row angular contact ball bearing designed for CNC machine tool spindles and other high-speed precision machining systems, delivering accurate shaft positioning in spindle assemblies. It features a metric bore of 110 mm, outside diameter of 170 mm, and a width of 28 mm, with a 25° contact angle, steel balls, and a CR phenolic outer land riding cage to optimize stiffness and runout performance. The bearing carries ISO P4S (ABEC 7/9) precision and supports a dynamic radial load rating of 94,100 N (21,200 lbf) and a static radial load rating of 97,400 N (21,900 lbf); grease-lubricated limiting speed is 7,400 rpm and 13,600 rpm under oil lubrication. Manufactured by Timken (Fafnir) under part number 3MM9122WICR, it corresponds to world part number 7022E-T-P4S and is designed for spindle repair, precision equipment maintenance, and machine upgrades in CNC machining centers, precision lathes, milling machines, and grinding spindles where consistent accuracy is essential.