In order to ensure the uninterrupted operation of the hydraulic brake, it is necessary to frequently protect and protect it: 1. Lubricant is often added to the movable parts of the electromagnetic brake. 2. Regularly check the length of the armature stroke. Because during the operation of the brake, the travel length of the armature will increase due to wear on the moving surface. When the length of the armature stroke cannot reach the normal value, it is necessary to adjust it to reproduce the small gap between the moving surface and the turntable. If the stroke length of the armature increases above the normal value, it may greatly reduce the suction force. 3. If a worn brake surface is replaced, the small gap between the brake surface and the rotary table should be adjusted appropriately from the beginning. 4. Regularly check the tightening degree of the bolts, especially tighten the bolts of the electromagnet, the bolts of the electromagnet and the shell, the bolts of the magnetic yoke, the bolts of the electromagnet coil, and the wiring bolts. 5. Regularly check the mechanical wear status of movable components and remove dust, burrs, and dirt from the surface of electromagnetic components.