Timken 3MM9126WIDUL Angular Contact Ball Bearing

The Timken 3MM9126WI DUL is a super‑precision duplex angular contact ball bearing set (DUL) built for CNC machine tool spindles and high‑speed precision machining systems. It delivers high axial rigidity and minimal runout thanks to a 25° contact angle and a duplex arrangement with universal light preload. The bearing pair has a bore of 130 mm and an outside diameter of 200 mm, with each bearing 33 mm wide (66 mm total for the duplex set). Manufactured by Timken (Fafnir), this unit uses steel balls and a CR phenolic outer land riding cage, and carries ISO P4S (ABEC 7/9) precision. Dynamic radial load rating is 123,000 N and static radial rating is 129,900 N, supporting demanding spindle applications. Maximum speed is 6,300 rpm under grease lubrication or 11,600 rpm with oil lubrication. World Part Number 7026E-T-P4S-DUL identifies the exact specification, and the MPN is 3MM9126WI DUL. Typical applications include CNC machining centers, precision lathes, milling machines, grinding spindles, and other high‑speed spindle assemblies where accurate shaft positioning and long bearing life are critical.