boyee new material

boyee new material

BR4 bronze rolled bushing

 

BR4B bronze base rolled bushing


BR4B bronze base rolled bushing adopts high-density copper alloy strip with special formula as the matrix, 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.
The product 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.


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;
  • 4. Strong thermal conductivity;
  • 5. Wide temperature range:-40℃~+110℃ ;
Application area
  • It is 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 8.4g/cm3
Compressive strength 440N/mm²
Thermal conductivity 71W/m·K
Coefficient of linear expansion 19.2×10-6/K
Hardness 80~110HB
Elongation 30%
Material name CuZn31Si