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door floor springdouble cylinder floorspring

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What is the principle and structure of floor spring?
2024-02-24

What is a floor spring?The floor spring is a hydraulic door closer, but the device that presses the spring is a worm gear rather than a gear rack. Because the worm gear can rotate in both directions, the floor spring can be used for doors that open in both directions, while the door closer can only Read More