Advantages of MG-CR Filament wound plastic self-lubricating bearings used in isolating switches-Knowledge-Jiashan Marginal Bearing Co., Ltd.

Advantages of MG-CR Filament wound plastic self-lubricating bearings used in isolating switches

The MG-CR Filament wound plastic self-lubricating bearings  in Margingal Bearing is suitable for the mechanical rotating parts of the indoor and outdoor high-voltage isolating switches with a rated voltage of 40.5KV~252KV, ensuring that the "opening" and "closing" actions can be completed smoothly regardless of manual or electric operation .

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The use of plastic bearing high voltage isolation switches has the following advantages:

  1. Since MG-CR Filament wound plastic self-lubricating bearings of Marginal Bearing can work normally in a vacuum environment, the high-voltage isolating switch using this plastic bearing has no installation height limit, and can work normally on mountains above 3000 meters above sea level.

2. The long-term use temperature ofMG-CR Filament wound plastic self-lubricating bearings is -50℃~+110℃; therefore, the high voltage isolating switch using this plastic bearing can work normally whether it is used in the cold north or the hot south ; it can be more than 10mm thick Works normally under the ice layer.

 3. The hygroscopicity of MG-CR Filament wound plastic self-lubricating bearings is very small and only 0.05%; the high-voltage isolating switch using this plastic bearing can complete normal rotation no matter in high humidity and heavy rain or high dry summer.

  4. Because MG-CR Filament wound plastic self-lubricating bearings is reinforced with fiber, the high-voltage isolating switch using this severe plastic bearing can withstand various vibrations caused by strong winds (above 700pa) or earthquakes (above 8).

  5.MG-CR Filament wound plastic self-lubricating bearings excellent anti-pollution ability can ensure the normal operation of the high-voltage isolating switch in a variety of bad environments (pollution level IV and above).


6. The excellent corrosion resistance of MG-CR Filament wound plastic self-lubricating bearings can complete the rotation of various parts in a high salt spray or acid rain environment that cannot be done by traditional metal bearings.

7. The overall material of MG-CR Filament wound plastic self-lubricating bearings is evenly distributed with a variety of high-lubricating solid lubricants. During the installation process, even if MoS2 lithium-based grease is not applied, the rotation can be completed normally; whether it is manual operation or electric remote control The operation can be completed.

   8. The high voltage isolating switch using MG-CR Filament wound plastic self-lubricating bearings runs smoothly during the entire "closing" or "opening" process, and there will be no vibration of the isolating knife caused by poor rotation of the rotating parts.

  9. MG-CR Filament wound plastic self-lubricating bearings excellent self-lubricating wear resistance and anti-aging performance (more than 30 years) can ensure that the high-voltage isolating switch can complete more than 100,000 mechanical actions.

 Marginal Bearing   MG-CR Filament wound plastic self-lubricating bearingsproducts have been widely used in isolating switches abroad for many years. At present, domestic isolating switch manufacturers have gradually begun to use them with their successful foreign experience. MG-CR Filament wound plastic self-lubricating bearings are being designed and used by all walks of life with their unique advantages, especially in the domestic isolating switch design and manufacturing level to catch up with the international leading to create a possibility.


28-Sep-2020