Industrial 2MM211WIDUL Angular Contact Ball Bearings

The Timken Fafnir 200WI series duplex set 2MM211WICRDUL is a factory-matched pair of super-precision single-row angular contact ball bearings with light preload (DUL) designed for high-speed machine-tool spindles that require exceptional rigidity, low runout, and precise shaft positioning. Each bearing has a 55 mm bore, 100 mm outside diameter, and 21 mm width (42 mm total width for the duplex assembly), a 15° contact angle, and ISO P4S precision rating. The duplex arrangement supports combined radial and axial loads in high-speed spindles and uses steel balls with a CR outer land riding cage and an MBR phenolic cage; it is specified as Series 200WI (ISO 7211C) with MPN 2MM211WICRDUL (Manufacturing Part Number: 2MM211WI DUL) and World Part Number 7211C-T-P4S-DUL. Per bearing, static radial load rating is 40,000 N and dynamic radial load rating is 58,700 N (ISO C1 53,400 N); limiting speeds are 14,500 rpm (grease) and 29,000 rpm (oil); maximum shaft fillet radius and maximum housing fillet radius are both 1.5 mm. Commonly used in CNC machining centers, high-speed milling, grinding machines, machining spindles, and other precision machine tools requiring super-precision bearings.