ZHEJIANG TOP BEARINGS CO., LTD.
YOUR TOP PARTERNER FOR PLAIN BEARINGS and ROLLING BEARINGS.
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Copper Alloy CuZn31Si Wrapped Bronze Bearing Bushes Low Running Velocity
It is made of copper alloy CuZn31Si that is of higher density. Its surface can be punched with oil sockets or grooves, which are preserved for oil saving. It has better anti-fatigue and load, anti-erosion and anti-silicon abrasion capacity. The products are widely applied in conditions of heavier load but low running velocity, such as on agricultural, building and engineering machines, etc.
| Product NO. | Chemical Compositions | |||
| TOB 091 | Cu | Si | P | Zn |
| 68 | 1 | 0.2 | Remainder | |
Physical and Mechanical Performance
| Performance Index | Data | Performance Index | Data | |
| Max. Load Pressure | 90N/mm² | Mating Axis | Hardness | ≥50 HRC |
| Max. Linear Velocity | 2 m/s | Roughness | Ra=0.4~1.0 | |
| Max. PV value | 2.8N/mm²·m/s | Max. Working Temperature | 150℃ | |
| Tensile Strength | 440N/mm² | Friction Coefficient | μ 0.05~0.20 | |
| Yield Strength | 230N/mm² | Heat Conducting Coefficient | 71 W/(m*k) | |
| Hardness | HB 90~150 | Heat Expansion Coefficient | 19.2 10^-6k^- | |
