Daily inspection is the first step to keep the 25 ton double girder overhead crane in stable condition. Before starting work, check the main beams and end beams for deformation, cracks or loose bolts. Clean dust and debris on the beams, tracks and electrical cabinets to keep equipment tidy. Check the running condition of the crane and trolley, ensuring smooth travel without shaking, gnawing the rail or abnormal noise.

 

Check the wire rope carefully for broken wires, wear, rust or messy arrangement. The hook should be free of cracks, deformation and excessive wear, and the anti‑stripping device must be intact and effective. Test the brake performance to ensure sensitive and reliable action. Check the limit switches, emergency stop buttons and overload protection devices to make sure they work normally. Only after all inspections are qualified can the machine be started, which can effectively avoid faults and accidents during operation.

 

 

Good lubrication is critical to reduce wear and extend the life of 25 ton double girder overhead crane. Key parts such as reducers, bearings, couplings, wheels and wire ropes need regular lubrication. Choose the special gear oil, grease and wire rope lubricant recommended by the manufacturer, and do not mix different types of oil.

 

Check the oil level of the reducer regularly. Replenish or replace the lubricating oil in time when it is insufficient, deteriorated or contaminated. Lubricate the bearings and moving parts to ensure flexible rotation and no jamming. Lubricate the wire rope properly to keep it soft and rust‑proof. Develop a lubrication cycle according to the working frequency and environment, record each lubrication condition, and avoid insufficient lubrication or excessive lubrication, so as to keep all mechanisms running smoothly.

 

 

The mechanical parts of 25 ton double girder overhead crane bear heavy load and need careful maintenance. Regularly check the wear of wheels and rails. If the wheels are worn seriously, cracked or the rails are deformed and loose, repair or replace them in time. Check the gears and bearings in the reducer. If there is abnormal noise, heat or oil leakage, stop the machine for inspection and repair.

 

Check the tension and wear of the coupling and transmission parts, and replace the damaged elastic parts immediately. Check the drum for cracks, wear and deformation to ensure the wire rope is arranged neatly. The brake is an important safety part. Check the wear of brake pads and the tightness of springs regularly. Adjust the brake clearance to ensure reliable braking. Proper maintenance of mechanical parts can keep the equipment with strong load capacity and stable operation.

 

 

The electrical system is the control core of 25 ton double girder overhead crane, and its reliability directly affects safety. Regularly check the motor for overheating, abnormal noise or vibration, and keep the motor clean and well ventilated. Check the cables, wires and connectors for damage, aging or looseness, and fasten or replace them in time.

 

Check the contactors, relays and control buttons to ensure good contact and sensitive action. Clean the dust inside the electrical cabinet to keep it dry and avoid short circuit. Test the safety protection devices such as limit switches and overload protectors regularly to ensure they can work normally. For the control system, check the remote control and cabin control functions to ensure accurate and error‑free operation. Good electrical maintenance can prevent electrical faults and ensure safe and reliable operation.

 

 

The maintenance of 25 ton double girder overhead crane includes daily inspection, standardized lubrication, mechanical parts maintenance and electrical system maintenance. Scientific maintenance can keep the crane in good performance, reduce failures and potential safety hazards, extend service life and improve work efficiency.

 

For enterprises using 25 ton double girder overhead crane, adhering to the complete maintenance system is the key to ensure production safety and reduce operating costs. Proper maintenance can make the heavy‑duty lifting equipment run stably for a long time, provide reliable support for workshop and industrial production, and create greater value for enterprise operations.