JF-20 product description
JF-20 high tin aluminum base bearing is a product with steel plate as the base and AISn20Cu material rolled on the surface. The product has the characteristics of medium fatigue strength and bearing capacity, good corrosion resistance, good sliding performance and so on. This product is often used for medium and small power internal combustion engine bearing bushes, train engine bearing bushes, and air compressor bushings. It is a novel product to replace babbitt.
| code |
JF-20 |
|
| Material | Carbon steel+AlSn20Cu | |
| Maximum dynamic load N/mm2 | 120 | |
| Maximum line speed m/s | Grease lubrication | — |
| Alloy layer hardness HB | 30~40 | |
| Maximum PV N/mm2 · m/s | Grease lubrication | — |
| oil lubrication | 15 | |
| friction coefficient u | Grease lubrication | — |
| oil lubrication | 0.04~0.12 | |
| Max temperature °C | Grease lubrication | 150 |
| oil lubrication | 250 | |
| Matching shaft diameter | Hardness HRC | ≥270 |
| Roughness Ra | 0.16~0.63 | |
| Thermal Conductivity W/mk | 47 | |
| Linear expansion coefficient (axial) | 19✕10-6 /k | |
Main application areas
At present, this product has been applied to the bearing bush of medium and small power internal combustion engine, the bearing bush of train engine, and the bush of air compressor, which is a novel product to replace babbitt alloy.
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