How to maintain pneumatic winches to extend their service life

Pneumatic winches are widely used in industrial and marine fields due to their advantages of explosion-proof, lightweight, and low maintenance. However, to ensure its long-term stable operation and extend its service life, systematic maintenance is required. The following is a maintenance guide based on device characteristics and industry practices:

1、 Daily maintenance (daily/after each use)

Cleaning and Inspection

Remove dirt: Use compressed air or a soft cloth to clean the surface of the winch and debris inside the drum, avoiding the residue of corrosive substances.

Check fasteners: Confirm that bolts, nuts, and other connecting components are not loose to prevent component detachment due to vibration.

Pneumatic system inspection

Pipeline integrity: Check the pneumatic pipeline for any damage or air leakage, and ensure that the joints are securely connected.

Pressure test: Use a pressure gauge to check if the input air pressure meets the equipment requirements (usually 6-8 bar). Excessive or insufficient pressure can affect performance.

lubricating maintenance

Lubrication of pneumatic motor: According to the instructions, regularly inject specialized lubricating oil into the pneumatic motor (such as every 50 hours of operation) to reduce internal wear.

Gears and bearings: Apply anti rust grease to exposed gears and bearings to prevent rusting.

2、 Regular maintenance (monthly/quarterly)

functional testing

Braking system: Test the emergency braking function to ensure that it stops within 1 second under full load conditions.

Load capacity: Conduct a simulation test of the rated load to check if the winch runs smoothly.

Key component inspection

Drum and wire rope: Check that there are no cracks on the surface of the drum, and that the wire rope is not broken, corroded, or excessively worn (if the wear exceeds 10% of the original diameter, it needs to be replaced).

Gearbox: Check the meshing of gears and replace severely worn gears or bearings.

anti-corrosive treatment

Metal parts: Apply anti rust paint to non galvanized metal parts, especially in humid or salt spray environments.

Electric control components (if any): Check that the electrical components inside the control box are not damp, and use desiccants to remove moisture if necessary.

3、 Long term maintenance (annual/major overhaul)

Comprehensive disassembly and inspection

Pneumatic motor: Disassemble the motor, clean the internal carbon deposits, and check the wear of the blades and rotor.

Brake: Check the thickness of the brake pads and replace any parts that exceed the wear limit.

Performance calibration

Speed and torque: Use professional equipment to calibrate the operating speed and output torque of the winch to ensure compliance with design parameters.

Safety valve: Test the opening pressure of the safety valve to prevent overpressure operation.

Replacement of vulnerable parts

Seals: Replace aging or damaged O-rings and gaskets to prevent air leakage.

Steel wire rope: Regularly replace the steel wire rope (usually 2-3 years) according to the frequency of use and working conditions.

4、 Maintenance precautions

Operating specifications

Overloading is prohibited: strictly use according to the rated load to avoid component damage caused by overload.

Smooth start stop: Avoid frequent emergency stops and starts to reduce mechanical impact.

environmental control

Dry storage: When not in use for a long time, store the winch in a dry and ventilated place, covered with a dust cover.

Salt spray prevention: After use in marine environments, rinse and dry with fresh water in a timely manner.

Record and Trace

Maintenance log: Record the time, content, and replaced parts of each maintenance to facilitate tracking of equipment status.

Spare parts management: Reserve commonly used spare parts (such as seals, wire ropes) to ensure quick maintenance.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment