In the C5235A vertical lathe workbench parking device, a speed relay associated with the main pulley plays a key role, and its working state directly affects the braking reliability of the workbench. The installation structure of the original machine speed relay is not ideal. Only the screw hole of the driven pulley shaft is drilled, and it is directly fixed on the relay shaft with the set screw. The connection stability is not good, and the tension of the relay shaft top and the bearing radial direction is relatively better. Big.
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