Regarding the common faults of electric hoists, the specific types and frequencies of faults may vary depending on factors such as brand, model, usage environment, and maintenance status. The following are some common faults and their possible causes summarized based on general experience and common situations:

1、 Electrical system malfunction

Motor malfunction:

Fault causes: motor overheating, burnt windings, damaged bearings, etc.

Performance: Motor failure to start, loud noise during operation, unstable speed, etc.

Control system malfunction:

Reason for malfunction: controller damage, contactor contact erosion, short circuit or open circuit in the circuit, etc.

Performance: Inability to accurately control lifting and lowering, inaccurate stopping, abnormal indicator lights, etc.

Limit switch malfunction:

Reason for malfunction: Poor contact caused by damaged limit switches, improper adjustment, or excessive dust accumulation.

Performance: The electric hoist cannot stop at the designated position, which may cause overload or collision accidents.

2、 Mechanical system malfunction

Gearbox malfunction:

Fault causes: gear wear, bearing damage, oil seal leakage, etc.

Performance: There are abnormal noises, intensified vibrations, and decreased transmission efficiency during operation.

Brake malfunction:

Reason for malfunction: brake pad wear, spring failure, improper adjustment, etc.

Performance: Poor braking, long braking distance, or inability to brake, etc.

Fault in steel wire rope and pulley system:

Fault causes: wear, breakage, and corrosion of steel wire ropes, wear and blockage of pulley systems, etc.

Performance: shaking during operation, wire rope jumping out of pulley groove, decreased lifting capacity, etc.

3、 Other common faults

Poor lubrication:

Reason for malfunction: Failure to add or replace lubricating oil on time, resulting in increased component wear.

Performance: Increased running resistance, increased noise, temperature rise, etc.

Damage to shell and structural components:

Reason for malfunction: collision, corrosion, fatigue fracture, etc.

Performance: deformation, cracks, loosening or detachment of structural components, etc. in the shell.

preventive measure

To reduce the occurrence of faults in electric hoists, the following preventive measures can be taken:

Regular maintenance: Clean, lubricate, inspect, and adjust the electric hoist regularly according to the instructions in the user manual.

Correct operation and use: Operators should be familiar with the performance and operating procedures of electric hoists, and avoid improper operations such as overloading, tilting, and emergency stop.

Strengthen safety inspections: Regularly inspect and test the electrical system, mechanical system, safety protection devices, etc. of the electric hoist to ensure that the equipment is in good condition.

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