B71926-C-T-P4S-UL

The B71926-C-T-P4S-UL is a single-row angular contact ball bearing engineered to meet the extreme demands of high-speed machine tool spindles. This component's designation highlights its specialization: the "719" series denotes an extremely light cross-section, and the "C" indicates a narrow 15∘ contact angle, which is specifically optimized for high rotational speed and generating minimal heat. With an accuracy class of P4S, this bearing exceeds standard P4/ABEC-7 tolerances, ensuring exceptional running accuracy, low noise, and minimal Non-Repetitive Runout (NRRO)-all critical factors for achieving high surface finish quality in precision machining. The bearing utilizes a phenolic resin cage (T), which is lightweight and durable, further supporting stable, high-speed operation and improved lubrication characteristics.

The UL suffix signifies a universal matching design with a light preload, allowing the single bearing to be installed in duplex, triplex, or quadruplex sets (e.g., tandem, O-arrangement, or X-arrangement) without the need for shims. This universal feature provides design flexibility, enabling users to achieve varied load distribution and axial stiffness necessary for different machine tool applications, from high-speed internal grinding to milling centers. By combining high rigidity with the ability to handle both radial and axial loads simultaneously, the B71926-C-T-P4S-UL delivers increased throughput and reliability, ultimately ensuring the spindle system maintains its dimensional stability and precision over an extended operating life.

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