NSK 4308 Deep Groove Ball Bearing - 40 mm ID, 90 mm OD, 33 mm Width Stethoscope hard-stamped markings allow for easy

hard-stamped markings allow for easy identification and can be easily recognized as SAE (double line) or metric (knurled line)

making it the broadest-capability tool in the TKSA family

To use an oil refill set you need a support plate with integrated return valve which has to be ordered separately

The one-piece design provides more secure locking than set-screw collars and is effective on both soft and hardened shafts

NSK 4308 Deep Groove Ball Bearing - 40 mm ID, 90 mm OD, 33 mm Width Stethoscope hard-stamped markings allow for easyDeep Groove Ball Bearing NSK deep groove ball bearings are versatile, robust, and accommodate radial and axial loads in both directions. Their simple design, low friction, and high speed capability make them suitable for a wide range of industrial applications, from electric motors to gearboxes. Sealed and shielded variants protect against contamination, while open versions allow easy lubrication.