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Floor spring has to cope with routine daily business and emergency situation. Floor springs soften the door strike and close the door securely. Floor spring extends from the functional standard of the hold-open systems to virtually invisible closing solutions integrated into the floor or door bottom.

The floor spring can be used for two-way opening doors. The technical key of the floor spring lies in the bearing seat under the main shaft, which determines the bearing grade of the floor spring.

The floor spring is one kind of many door closers. Floor spring belongs to a hydraulic door closer. The compression spring device of floor spring is a turbine rather than a rack and pinion so that the floor spring can rotate forward or reverse.