This is a spindle bearing designed for precise axial and radial positioning of a shaft under a 25° contact angle. Bore diameter is 17.0 mm, outside diameter 40.0 mm, width 12.0 mm, and net mass 0.068 kg. The bearing uses a T cage and has no sealing arrangement, being supplied unadjusted for individual mounting in pairs or sets (B72..-E design, P4S accuracy class, UL suffix). The P4S accuracy class and restricted tolerances allow the bearing to run true under high-precision requirements, while the 25° contact angle provides combined load capacity in both radial and axial directions. Since sealing is absent, external protection against contamination must be provided by the housing design. Pairing or set arrangement (as indicated by the E1-less designation) permits controlled preload configuration, matching the bearing to the required stiffness and running accuracy of the shaft assembly.