SKF Adapter Sleeve 50.8 mm Bore Diameter, 75 mm Outside Diameter, 45 mm Overall Length HE 311 B

The SKF HE 311 B Adapter Sleeve is a high-quality mechanical mounting component designed with a 50.8 mm bore diameter, 75 mm outside diameter, and a 45 mm overall length. This sleeve serves as an intermediary between the shaft and the bearing inner ring, enabling precision mounting of bearings onto shafts by providing controlled interference fit and repeatable concentricity.

The 50.8 mm threaded interface allows secure fixing onto the shaft, supporting stable axial positioning in the assembly.

This adapter sleeve is widely used in various industrial applications including drive systems, conveyor mechanisms, actuator units, and rotary equipment requiring precise bearing alignment and stable mechanical performance. It is compatible with housings accommodating a 75 mm outside diameter and 45 mm length, making it suitable for retrofit replacement in existing assemblies.

The dimensional relationships between bore diameter, outside diameter, and sleeve length are critical for assembly alignment, radial support, and axial positioning to maintain concentricity and reliable operation.

50.8 mm bore diameter enables precise engagement with shafts. 75 mm outside diameter provides uniform contact and support. 45 mm overall sleeve length offers axial stability. Threaded interface secures the sleeve and bearing in position.

Ideal for use in automation, electronics, mechanical, and industrial systems. Suitable as a replacement part for compatible rotary equipment assemblies. Explore more bearing accessories and industrial components at EnvMart for your mechanical and fluid power requirements.

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