Bimetal bearings are a maintenance-bound composite sliding bearing. Oil or grease lubrication is necessary.
Wrapped bushing, steel/ aluminum
High tin aluminum plain bearing
High tin aluminum bearing is made of steel backed with AISn20Cu Rolled on the surface.
The aluminum bearing product has the characteristics of moderate fatigue strength, bearing capacity, good corrosion resistance and good sliding performance.
| Standard white metal bearing, Heavy maintenance | |||
| TECHNICAL DETAILS | |||
| Specific load capacity static | to ≤ 100 [N/mm2] | Temperature strain | -10 [°C] to +200 [°C] |
| Specific load capacity dynamic | to ≤ 70 [N/mm2] | ||
| Sliding speed | ≤ 25 [m/s] | Max. PV-value | 6.0 [N/mm² x m/s] |
| Friction value | 0.08 [µ] to 0.17 [µ] depending on lubrication | ||
| MATERIALS | |||
| Support material | Steel, tin-plated | Sliding layer | AlSn20Cu |
| TOLERANCE DETAILS | |||
| Housing Ø | H7 | Shaft tolerance | f7 to h8 |
| Bushing inner-Ø after mounting | H9 | ||
| SHAFT MATERIAL | |||
| Steel, hardened or untempered | |||
| Serface roughness ≤ Ra 0.8 | |||
| PROPERTIES | |||
| For high rotational speeds in a sealed and oil-lubricated application. | |||
Application
This high tin aluminum bearing product is commonly used as medium and small power internal combustion engine bearing bush, train engine bearing bush, air compressor bearing bush, is a new bushing product to replace babbitt alloy.
Normal Thickness of Bearing Bushing Tolerances of Series (non-machinable)
| Normal Thickness | Tolerances of Series B (non-machinable) | Tolerances of Series C (non-machinable) |
| 1.0 | -0.025 | +0.25 +0.15 |
| 2.0 | -0.030 | +0.25 +0.15 |
| 2.5 | -0.035 | +0.25 +0.15 |
| 3.0 | -0.040 | +0.30 +0.15 |
| 3.5 | -0.045 | +0.30 +0.15 |
| 3.5 | -0.050 | +0.30 |
