ZHEJIANG TOP BEARINGS CO., LTD.
YOUR TOP PARTERNER FOR PLAIN BEARINGS and ROLLING BEARINGS.
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The manufacturing process of sintered components is certified as ecological, because the material waste is very low, the product is recyclable, and the energy efficiency is good because the material is not molten.Plug graphite bearings are primarily used in applications that need continual lubrication in hard to reach areas. Graphite is mechanically forced into the holes/grooves under extreme pressure. A film of lubricant is transferred to the shaft as it begins to turn. These bearings offer continuous lubrication over long periods without maintenance.
TOB-50 Solid Lubricating Bearing is produced by strengthening brass that has good physical performance and good capability for casting. What's more, the brass material has pretty good anti-erosion abitity in air, fresh water and sea water. The surface is regularly and finely machined with sockets in which particular solid lubricant is filled. The product is widely used on consecutive casting and rolling machines, mine-exploiting equipments, ships, steam engine, etc.
Solid Lubricant Casting Aluminum Bronze Bearings Bushings
1. May work without any ol for long period
2. Extremely high load capacity, good anti-wear and lower friction
3. Particularly appropriate for low speed and high load
4. Suitable for reciprocating, oscillation or intermittent motion where oil film is hard to be formed
5. Good chemical resistant and anti-corrosion characteristics
6. Can b€ used in wide range of temperature from -40℃-+300℃
TOB-50 SOLID LUBRICANT SLIDING BEARINGS material is made of strong cast bronze based metal with special solid lubricants embedded. The base metal withstands high load and the solid lubricants provide self-lubrication. The bearing shows excellent performance without pre-lubrication under conditions of extreme high/low temperature with low speed. This material provides a maintenance-free bearing solution, particularly for high load, intermittent of oscillating motion.
| Grade | 50# | 50S1 | 50S2 | 50S3 | 650S5 |
| Material | CuZn25AI5Mn4Fe3 | CuSn5Pb5Zn5 | CuAI10Ni5Fe5 | CuSn12 | CuZn25AI5Mn4Fe3 |
| Density | 8 | 8.9 | 7.8 | 8.9 | 8 |
| Hardness | ≥210 | ≥70 | ≥150 | ≥75 | ≥235 |
| Tensile strength | ≥750 | ≥250 | ≥500 | ≥270 | ≥800 |
| Yield strength | ≥450 | ≥90 | ≥260 | ≥150 | ≥450 |
| Elongation | ≥12 | ≥13 | ≥10 | ≥5 | ≥8 |
| Coefficient o linear expansion | 1.9×10-5/℃ | 1.8×10-5/℃ | 1.6×10-5/℃ | 1.8×10-5/℃ | 1.9×10-5/℃ |
| Max.Temp. | -40~+300℃ | -40~+400℃ | -40~+400℃ | -40~+400℃ | -40~+300℃ |
| Max.dynamic load | 100 | 60 | 50 | 70 | 120 |
| Max.speed(Dry) | 15 | 10 | 20 | 10 | 15 |
| N/mm²*m/s(Lubrication) | 200 | 60 | 60 | 80 | 200 |
| Compression deformation | < 0.01 mm | < 0.05mm | < 0.04mm | < 0.05mm | < 0.005mm |
| Product NO. | Chemical Compositions | ||||||||
| TOB-50 | Cu | Zn | Al | Fe | Mn | Si | Ni | Sn | Pb |
| 60~66 | 22~28 | 5.0~8.0 | 2.0~4.0 | 2.5~5.0 | <0.1 | <0.5 | <0.2 | <0.2 | |
Bearing forms available in standard dimensions
· Cylindrical bushes
· Flanged bushes
· Sliding plates