Shaft Sleeves
- The dimensions of shaft sleeves vary widely.
- Common inner diameters range from a few millimeters to several hundred millimeters.
- The outer diameter is typically a few millimeters to dozens of millimeters larger than the inner diameter.
- The length of shaft sleeves generally falls within the range of a few millimeters to several hundred millimeters.
- Small shaft sleeves, such as those used in watch movements, may have a size of only a few millimeters.
- Large shaft sleeves, used in ships, large generators, and similar equipment, can reach several hundred millimeters or even larger.
- The specific size of a shaft sleeve is determined by factors such as the shaft diameter, available equipment space, and load-bearing requirements.
Materials of Shaft Sleeves
- Metal materials: Carbon steel has a low cost and high strength, making it suitable for general working conditions. Alloy steel has better strength and wear resistance and is used in harsh conditions such as heavy loads and high speeds. Copper alloys have excellent anti-friction and anti-corrosion properties and are often used in machinery with special requirements.
- Non-metallic materials: Engineering plastics such as polytetrafluoroethylene (PTFE) have good self-lubricating properties, a low friction coefficient, and are corrosion-resistant, and are used in occasions with light loads and requirements for oil-free lubrication. Rubber shaft sleeves have good shock absorption and sealing properties and are often used in parts where shock absorption and sealing are required.
Surface Treatments of Shaft Sleeves
- Plating treatment: Hard chrome plating can improve hardness and wear resistance, and nickel plating can enhance corrosion resistance and aesthetic appearance.
- Chemical treatment: Blackening treatment can form an oxide film to improve rust resistance; phosphating treatment can increase lubricity and corrosion resistance.
- Other treatments: Nitriding treatment can improve surface hardness, wear resistance, and fatigue resistance; shot peening treatment can improve surface strength and fatigue resistance.
Application Fields of Shaft Sleeves
- Automotive industry: It is used in components such as engines and transmissions, such as crankshaft sleeves and connecting rod sleeves, to ensure good cooperation and motion accuracy between components.
- Mechanical manufacturing: It is widely used in various machine tools, reducers, etc., supporting the transmission shaft, reducing wear, and improving the stability and accuracy of the equipment.
- Aerospace: It is used in key parts of aircraft engines, landing gear, etc., requiring high performance and reliability.
- Home appliance field: For example, in the motors of air conditioners and washing machines, it plays the role of support and reducing friction, reducing noise and energy consumption.
