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Wrapped Bronze Bushing
Developed from steel-copper lead bimetallic bearings, this thin-walled bushing saves assembly space while maintaining high load capacity. Manufactured from specially formulated high-density copper alloy strip, it offers superior performance over traditional cast copper bushes—including higher density, no shrinkage porosity, excellent wear and fatigue resistance, and greater load capacity.
Advanced manufacturing allows for custom oil grooves, pits, and holes on the friction surface, which retain lubricant for extended service intervals and significantly increase service life. It can be supplied with diamond or hemispherical oil patterns to meet specific customer requirements.
Ideal for reducing machine size and cost, it is widely used in agricultural, construction, engineering, and automotive applications, as well as hoisting equipment, machine tools, and mining machinery. It is also available as bearing bushes, flanged sleeves, thrust washers, and spherical seats.
Technical Parameters
Property | Value |
---|---|
Density | 8.8 g/cm³ |
Compressive Strength | 470 N/mm² |
Thermal Conductivity | 58 W/(m·K) |
Linear Expansion Coefficient | 18.5 × 10⁻⁶/K |
Hardness | 90-120 HB |
Elongation | 40% |
Material Designation | CuSn8P |

Metallographic Analysis
Copper Substrate Layer