| SF-1T gear pump special bearing
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| Material Structure |
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1. Modified polytetrafluoroethylene (PTFE) with lead (Pb) and other filling mixtures of 0.01~0.03mm, a wear-resistant material that can form a transfer film during operation to protect the grinding shaft.
2. The copper powder layer of 0.2-0.3mm enhances the bonding strength between PTFE/Pb and steel plates, providing excellent load-bearing capacity and wear resistance. Copper is also a good thermal conductive material that can quickly transfer the heat generated during the operation of bearings.
3. Low carbon steel 0.7-2.3mm, improving the bearing's load-bearing capacity and heat transfer effect.
4. Copper/tin electroplating layer, with a copper coating of 0.008mm and a tin coating of 0.005mm, provides the bearing with excellent corrosion resistance. |
| Main parameters Technical Date |
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Static bearing capacity |
250N/mm2 |
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coefficient of friction |
0.01~0.05 |
Maximum Load |
Low speed operation |
140N/mm2 |
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Maximum linear speed |
dry friction |
2m/s |
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Rotating and swinging motion |
60N/mm2 |
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fluid lubrication |
>10m/s |
Maximum PV value
(Dry friction) |
Intermittent operation |
3.6N/mm2.m/s |
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thermal conductivity |
40W(m.K)-1 |
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Long term operation |
1.8N/mm2.m/s |
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linear expansion coefficient |
12x10-6K |
Usage temperature |
-195℃~＋280℃ |
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| Application Features Application CHARACTER |
Under oil lubrication conditions, the friction coefficient is small and stable.
2. Good wear resistance and impact resistance.
Under fluid lubrication conditions, the PV value can reach 120N/mm2 · m/s
4. This product is currently widely used in various gear oil pumps, plunger pumps, vane pumps and other occasions, especially suitable for medium and high pressure gear pumps under fluid lubrication or boundary lubrication conditions. |
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