Timken 2MM9114WICRDUL Angular Contact Ball Bearing Set

The Timken 2MM9114WICRDUL is a factory-matched duplex set of super-precision single-row angular contact ball bearings from Timken Fafnir’s 9100WI series, designed for high-speed machine tool spindles with exceptional rigidity and low runout. This duplex arrangement uses light preload (DUL) to improve spindle stiffness and thermal stability in applications requiring precise shaft positioning, including CNC machining centers, high-speed milling, grinding machines, jig borers, and precision lathes. The bearing pair features a 70 mm bore and 110 mm outside diameter, with a 20 mm single-width profile and a combined duplex width of 40 mm, a 15° contact angle, and ISO P4S (ABEC 7/9 equivalent) precision. They are steel-ball bearings with a CR outer land riding cage and an MBR phenolic cage, arranged as a duplex matched pair to support combined radial and axial loads. Dynamic radial load rating is 50,300 N per bearing and static radial load rating is 40,700 N per bearing; limiting speeds are 9,400 rpm under grease lubrication and 16,000 rpm with oil lubrication. The part is identified by MPN 2MM9114WICRDUL and World Part Number 7014C-T-P4S-DUL.