Troubleshooting & Maintenance

Ensure proper alignment between motor and reducer, avoid overload or shock loading, maintain clean lubrication, and ensure the mounting surface is rigid. Running a gearbox under excessive load or poor alignment conditions significantly shortens lifespan.

Common causes include gear wear, insufficient lubrication, misalignment, or external shock loads. If abnormal noise increases over time, stop operation immediately and inspect for worn bearings or damaged teeth.

Most NUODUN planetary and helical gearboxes use long-life synthetic grease and are maintenance-free. For worm gear reducers or high-duty applications, periodic lubrication checks may be necessary. Always follow the lubrication type specified in the product manual.

Routine inspection every 3–6 months is recommended depending on duty cycle. Check lubrication condition, shaft seals, mounting bolts, and noise level. Heavy-load or continuous-duty applications may require more frequent checks.

Low torque is often caused by a weak capacitor, low voltage, worn bearings, or insufficient lubrication in the gearbox. For AC induction motors, voltage drops significantly reduce torque. Measure input voltage and verify the capacitor meets the required specification.

Check for overload protection tripping, capacitor failure, mechanical jamming in the driven equipment, or overheating protection activation. Disconnect power, let the motor cool, and inspect the load for any abnormal binding or increased torque demand.

Possible reasons include misalignment, damaged bearings, loose mounting screws, rotor imbalance, or gear damage (for gear motors). Check for mechanical interference, tighten mounting hardware, and rotate the motor shaft manually to verify smoothness.

Overheating may result from overload, poor ventilation, incorrect voltage, continuous stalling, or a failing bearing. Running with a capacitor that is too large can also cause excessive heat. Ensure the applied load is within rated torque and confirm the motor is receiving the correct supply voltage.

This issue is commonly caused by a faulty capacitor, insufficient voltage, overloaded load, or excessive friction in the mechanism. For single-phase motors, a degraded capacitor is the most frequent cause. Check the capacitor value, wiring correctness, and ensure the motor shaft can rotate freely without binding.