BR4 series products
BR4A bronze base rolled bushing
BR4A bronze base rolled bushing adopts high-density copper alloy strip with special formula as the base, and the surface can be rolled with diamond or hemispherical oil cavities and oil grooves according to user requirements. It has the advantages of high density, large bearing capacity, good wear resistance, long service life, etc. It can replace the traditional casting copper sleeve, reduce the mechanical volume and reduce the cost.
BR4A has been widely used in lifting machinery, construction machinery, automobile tractor chassis, machine tool industry and mining machinery, and can also be made into bearing shells, flanging bearing sleeves, thrust washers and ball bowls.
Metallographic analysis
1. Copper base
Product characteristics&Application area
Product characteristics
- 1. Add oil or grease regularly;
- 2. Wear resistance, low friction coefficient;
- 3. High mechanical strength, strong dimensional stability;
- 1. Strong thermal conductivity;
- 2. Wide temperature range：-40℃～+110℃ ；
Application area
- It has been widely used in lifting machinery, construction machinery, chassis of automobile and tractor, machine tool industry and mining machinery, and can also be made into bearing shells, flanging bearing sleeves, thrust washers and ball bowls.
| PERFORMANCE INDEX | RELEVANT DATA | |
| Density | 8.8 g/cm3 | |
| Compressive strength | 470N/mm² | |
| Thermal conductivity | 58W/m·K | |
| Coefficient of linear expansion | 18.5×10-6/K | |
| Hardness | 90~120HB | |
| Elongation | 40% | |
| Material name | CuSn8P0.3 | |
