JF-720 bi-metal bushing is backing on low carbon steel, sintered with CuPb24Sn4 bronze powder, which has fairly good performance in anti-fatigue and load capacity, fit for middle speed and middle load working situation. When soft alloy is plated on the bu
| Grade | JF-720 | |
| Material | Steel CuPb24Sn4 | |
| Max Dynamic Load N/mm2 | 140 | |
| Max LinearVelocity m/s | Grease lubrication | 2.5 |
| Alloy layer hardness HB | 60~90 | |
| Max PV value N/mm2 · m/s | Grease lubrication | 2.8 |
| Oil lubrication | 10 | |
| Friction Coefficient μ | Grease lubrication | 0.05-0.15 |
| Oil lubrication | 0.04-0.12 | |
| Max temperature°C | Grease lubrication | 150 |
| Oil lubrication | 250 | |
| Matching Shaft | Hardnes HRC | ≥45 |
| Roughness Ra | 0.32~0.63 | |
| coefficient of heat conduction W/mk | 60 | |
| Linear expansion coefficient | 18✕10-6/k | |
The products are suitable for high-speed, heavy-duty internal combustion engine main shafts and transmission gears.