What Is The Function Of The Pump Shaft Sleeve

Jun 24, 2025

What is a shaft sleeve?

(1) Shaft: The shaft is the main component for transmitting power, and its function is to transmit power and bear loads.
(2) Bearing: A bearing is a component of a centrifugal pump that supports the rotor and bears radial and axial loads.
(3) Shaft sleeve: The main function of the shaft sleeve is to protect the main shaft from wear and tear. The shaft sleeve and seal together form the seal between the pump casing and the shaft.

Material of shaft sleeve

Specifications of plastic shaft sleeves: POM polyoxymethylene plastic shaft sleeve, PA nylon plastic shaft sleeve, PTFE polytetrafluoroethylene plastic shaft sleeve, PTFE plastic shaft sleeve, PTFE plastic shaft sleeve.

The characteristics of plastic shaft sleeves include acid, alkali, corrosion, mechanical strength, good wear resistance, heat resistance, oil resistance, and chemical resistance. The materials of plastic shaft sleeves include PTFE/Teflon/PTFE, POM, nylon PA, polypropylene PP. The products are used in industries such as aerospace, automotive, sensors, medical, pharmaceutical, satellite, valves, pumps, bathroom, electronics, bearings, electrical appliances, etc.
Bimetallic shaft sleeve is a standardized new material for shaft sleeve products. Mainly for various shaft sleeve processing enterprises, general machinery factories, and mechanical repair enterprises, we provide bimetallic shaft sleeve parts with Near Net Shape Material. With this bimetallic shaft sleeve component material, only a minimal amount of mechanical processing (such as chamfering, drilling, turning or oil pressing groove) is required to become a shaft sleeve product for direct installation and use.

What is the main function of the bearing sleeve?
1. Bearing sleeves are widely used in places where light loads are easy to disassemble and assemble. Many bearings encounter difficulties in assembly and disassembly, especially when the assembly of bearings inside the housing is limited by conditions. The application of bearing sleeves can solve the problems of assembly and disassembly.
2. The bearing sleeve can be adjusted for tightness, which relaxes the machining accuracy of many boxes and greatly improves the efficiency of box machining;.
3. Installing the bearing sleeve also overcomes the axial displacement of the bearing. So bearing sleeves are widely used, but there are also some shortcomings. The accuracy of bearing sleeves directly affects the radial runout of the shaft.
4. The most important role of bearing sleeves in machinery is to fix them. When the gear shaft moves, try not to let it deviate in direction due to vibration. At this time, copper shaft sleeves are needed to help fix it.

What is the role of copper shaft sleeves in machinery?

1. Fixed

When the gear shaft is moving, try not to let it deviate in direction due to vibration. At this time, copper shaft sleeves are needed to help fix it. The most important role of copper shaft sleeves in machinery is to fix the position, which is all the performance of copper shaft sleeves.

2. Sliding bearings

This is another function that copper shaft sleeves play in machinery. In order to reduce expenses and save costs, sliding bearings are needed at this time, and copper shaft sleeves happen to have this function. It mainly designs the thickness of the shaft sleeve for sliding bearings based on the axial direction of the bearing, and in fact, copper shaft sleeves are a type of sliding bearing. When the mechanical rotation is relatively low and the clearance requirements are relatively high, copper shaft sleeves can be used to replace rolling bearings for operation. Copper shaft sleeves have wear resistance and can be used for a relatively long time, so this can greatly help them save costs.

What are the main applications of copper shaft sleeves?

The copper sleeve on the shaft serves as a bearing and belongs to the category of sliding bearings. It is a bearing that works under sliding friction and rotates relative to the shaft, usually requiring auxiliary lubrication systems to operate. Sliding bearings work smoothly, reliably, and without noise. Under liquid lubrication conditions, the sliding surface is separated by lubricating oil without direct contact, which can greatly reduce friction loss and surface wear. The oil film also has a certain ability to absorb vibrations

The function is to lubricate, dissipate heat, reduce friction, extend lifespan, etc.

Copper sleeves are mainly used in industries such as machinery, printing and dyeing, papermaking, chemical industry, aerospace, coal, petroleum, automotive, engineering machinery, and metallurgy.