Timken 71906CCRDULP4S Duplex Angular Contact Ball Bearing Set

Timken 71906CCRDULP4S is a super-precision duplex angular contact ball bearing set designed for high-speed spindle applications that demand exceptional accuracy, rigidity, and the ability to carry combined radial and axial loads. This universally matched (DU) duplex pair provides controlled preload and precise shaft positioning, ideal for CNC machining centers, grinding machines, milling spindles, precision lathes, and other high-performance machine tools. Key specs include a 15° contact angle, metric design, bore 30 mm, outside diameter 47 mm, and width 9 mm per bearing, with a phenolic resin cage, steel balls, light preload, dynamic radial load rating of 6,610 N, static radial load rating of 9,540 N, and ABEC 7 / ISO P4S precision class. The bearing belongs to Timken’s 71900 Super Precision Series, and the MPN is 71906CCRDULP4S. Typical applications include spindle repairs, retrofits, and preventive maintenance in high-speed spindle environments where running accuracy and reliability are critical.