How to Select the Appropriate Brass Bushing Size Based on Shaft Diameter and Working Load?

1. Shaft Diameter Matching and Fit Clearance: When selecting a size, first determine the inner diameter of the brass bushing based on the shaft diameter, and then set the fit clearance according to industry experience. For shaft diameters < 50mm, a clearance of 0.01-0.03mm is recommended; for shaft diameters of 50-100mm, a clearance of 0.03-0.05mm is recommended. Increase the clearance by 0.001-0.002mm for every 10℃ increase in temperature to prevent seizing due to thermal expansion and contraction.

2. Working Load and Material Strength: Brass Bushing uses high-strength brass alloy, which has high compressive strength and good wear resistance, suitable for medium-speed, intermittent motion loads. If the load is close to the material's limit, the wall thickness of the brass bushing can be appropriately increased or a higher-strength alloy can be selected to ensure reliable load-bearing capacity.

3. Operating Environment and Lubrication Method

In humid, dusty, or high-temperature environments, it is recommended to use self-lubricating copper bushings or apply an appropriate amount of grease before installation. In applications with significant vibration or impact, thick-walled copper bushings provide better damping and reduce noise.

4. Customization Advantages of Yangzhou Yifeng

Yangzhou Yifeng Copper Products Co., Ltd. has a 30,000㎡ production workshop and 20 technical experts. It can quickly complete the customized processing of high-precision copper bushings based on parameters such as shaft diameter, load, and operating temperature provided by customers, and provides complete technical support and on-site commissioning services.