Timken 2MM203WI DUL Angular Contact Ball Bearing

The Timken 2MM203WI DUL is a factory-matched duplex set of super-precision single-row angular contact ball bearings from the Timken Fafnir 200WI series, with light preload (DUL) for high rigidity and low runout in demanding machine-tool spindles. Each bearing has a 17 mm bore, 40 mm outside diameter, and 12 mm width, with the duplex pair totaling 24 mm in width, a 15° contact angle, and a CR outer land riding cage paired with an MBR phenolic cage. This arrangement is designed for high-speed spindle applications such as CNC machining centers, high-speed milling, grinding machines, jig borers, and precision lathes, delivering accuracy and thermal stability. Key ratings include 5,900 N static radial load per bearing, 12,000 N dynamic radial load per bearing, ISO P4S (ABEC 7/9) precision, and limiting speeds of 41,900 rpm in grease or 83,800 rpm in oil. Manufacturing Part Number 2MM203WI DUL; World Part Number 7203C-T-P4S-DUL.