B71932-E-T-P4S-UL

The B71932-E-T-P4S-UL is a super-precision angular contact ball bearing built primarily for high-speed machine tool spindles, CNC milling centers, and precision grinding equipment. Sized with a 160 mm bore, 220 mm outer diameter, and 28 mm width, the B71932-E-T-P4S-UL relies on a 25-degree contact angle ('E' suffix) to handle high-velocity operations while providing exceptional radial-to-axial load transfer. An outer-ring-guided textile laminated phenolic resin cage ('T') manages the internal mechanics, lowering friction spikes and preserving structural stability up to 100°C-allowing the unit to hit limiting speeds of 5,300 rpm under grease or 8,000 rpm with oil lubrication. FAG applies its specialized P4S tolerance class to the B71932-E-T-P4S-UL, a strict dimensional standard that eclipses basic ISO Class 4 (ABEC 7) parameters to deliver tight running accuracy and near-zero vibrational runout. Because this specific configuration features a universal single-bearing design with a light preload (UL), the B71932-E-T-P4S-UL can be modularly combined in tandem, back-to-back, or face-to-face arrangements to scale up spindle rigidity precisely where the system demands it.

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