JDB500#-1U oil groove brass bushing. Based on high strength brass, lubricating by oil added in the groove, which has the same performance with tin bronze bushing but with much higher hardness, the life time for low speed application is 2 times of tin bron
| Grade | JDB500#-1U | |
| Material | CuZn25Al6Mn4Fe3 | |
| Density g/cm2 | 8.0 | |
| Hardness HB | >210 | |
| Pressure strength N/mm2 | >750 | |
| Yield Strength N/mm2 | >450 | |
| Elongation % | >8 | |
| Coefficient of linear expansion 10-5/°C | 1.9 | |
| Heat-conducting Coefficient W(/m.k) | 38~55 | |
| Flexibility Coefficient KN/mm2 | 100~140 | |
| Temp. Limits °C | -40~+300 | |
| Max. Dynamic Load N/mm2 | 120 | |
| Max.speed N/mm2 | Dry Lubrication | 0.4 |
| Oil Lubrication | 1.0 | |
| Max.PV N/mm2 · m/s | Dry Lubrication | 1.5 |
| Oil Lubrication | 3.25 | |
| Friction μ | Dry Lubrication | 0.12~0.16 |
| Oil Lubrication | 0.03~0.08 | |
This product is mainly used in the stressed joints and large gearboxes of excavators.