A shaft sleeve is a hollow cylindrical component that fits tightly over the shaft of a motor or pump. It acts as a protective barrier between the rotating shaft and other parts, such as bearings, seals, and packing materials.

Purpose and Function

The main purpose of a shaft sleeve is to protect the shaft from damage caused by:

Wear and abrasion: Frequent contact with seals, packing, or bearings can wear down the shaft surface.

Corrosion: Exposure to fluids, chemicals, or moisture can corrode the shaft metal.

Seal damage: A smooth sleeve surface helps maintain proper sealing, reducing leaks.

By covering the shaft, the sleeve takes the brunt of friction and corrosion, which means the shaft itself remains intact and easier to maintain or replace.

Materials and Types

Shaft sleeves are usually made of durable materials such as stainless steel, brass, bronze, or other corrosion-resistant alloys. The choice depends on the operating environment and the type of fluid handled by the pump or motor.