Sintered porous metal bearings are powder metallurgical parts, the starting materials are obviously metal powder. The metal powder used are specifically produced to give flow and compacting characteristic and at the same time ensure best mechanical strength, grade or porosity for oil retention and self lubrication in its finished form.
Sequence of Production :
• Forming (or compacting)
• Sintering
• Sizing
• Oil Impregnation
Material (as per IS: 3980 : 1982) :
• Sintered Bronze
Range :
• Plain & flanged bushes, self aligned bushes, solid rod, plate, sintered bushes, oilite bushes, self lubricated bushes, sintered bearings and different profile components as per drawings / samples.
Applications:
• Sintered bronze bushes are used for high speed application ( up to 18000 rpm)
Materials Composition As per IS : 3980 : 1982
Grade I, Copper Base
| Elements | Class A% | B3% | B2% | B1% |
|---|---|---|---|---|
| Iron (Fe) | 1.00 Max | 48-50 | 38-40 | 28-30 |
| Tin (sn) | 8-9.5 | 4-6 | 4-6 | 4-6 |
| Carbon (C) | 2.0 Max. | 2.0 | 2.0 | 2.0 |
| Impurities | 2.0 | 2.0 | 2.0 | 2.0 |
| Copper (Cu) | BAL. | BAL. | BAL. | BAL. |
