ZHEJIANG TOP BEARINGS CO., LTD.
YOUR TOP PARTERNER FOR PLAIN BEARINGS and ROLLING BEARINGS.
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Blue POM Boundary Lubricating Bearings Low-Carbon Steel + Copper Powder
It is made of high quality low-carbon steel, sintered porous bronze as its interlayer, with the compound of POM as its surface. The color of POM is Blue. And has good load capacity & wear-resistant. It's used in vehicle chassis, forming machine tools, steel metallurgical machinery, mineral mountain machinery, hydraulic industry and rolling steel industry, etc. It is without lead, can meet the requirements of environment protection.
Physical and Mechanical Performance
| Performance Index | Data | Performance Index | Data | ||
| Max. Load | Static Load | 250N/mm² | Friction Coefficient | Grease Lubrication | 0.15~0.25 |
| Dynamic Load | 140N/mm² | Oil Lubrication | 0.05~0.15 | ||
| Oscillation Load | 70N/mm² | Mating Axis | Hardness | >270 HB | |
| Linear Velocity | Grease Lubrication | 2.5 m/s | Roughness | Ra=0.4~1.25 | |
| Oil Lubrication | >3 m/s | Working Temperature | -40~+120℃ | ||
| Max. PV value | Grease Lubrication | 2.8 N/mm²·m/s | Heat-conducting Coefficient | 52 W/(m*k) | |
| Oil Lubrication | 50 N/mm²·m/s | Heat-expansion Coefficient (Axial) | 11*10^-6k | ||
Physical and Mechanical Performance
Normally, the surface polymer is chemical-erosion resistant quality. So its erosion-prevention quality is primarily decided by the quality of the steel back and its plating layer. Air-erosion could be effectively prevented if the steel back is bronze or tin-plated. If the bush is to be used in erosive environment, the steel back needs to be plated with zinc, nickel or nickel-chrome ally, etc.
