Common faults and causes of worm gear reducers

Worm gear reducer is a commonly used industrial transmission device. It has the characteristics of compact structure, large transmission ratio and high transmission efficiency, and is widely used in mechanical equipment. However, due to long-term use, worm gear reducer will also encounter some common faults.

Fault 1: Bearing damage

Bearing damage is one of the common faults of worm gear reducer. The main reasons for bearing damage are as follows:

  1. Poor lubrication: Worm gear reducer needs to be lubricated during operation. If the lubrication is insufficient or the grease is aged, it will cause poor lubrication of the bearing.
  2. Overload work: Overload work will cause the bearing to bear too much load, which will easily cause bearing damage in the long run.
  3.  Improper installation: Improper installation of bearings, such as loose or skewed bearings, will cause bearing damage.

Solution: Check the lubrication condition regularly and replace aging grease; use the worm gear reducer reasonably to avoid overload work; install the bearing strictly in accordance with the standard to ensure the normal operation of the bearing.

Fault 2: Gear wear

Gear wear is one of the common faults of worm gear reducer. The main reasons for gear wear are as follows:

  1. Poor quality: Low-quality gears are prone to wear, affecting the normal operation of the worm gear reducer.
  2. Long service life: Long-term use will cause wear on the gear surface, which will affect the transmission efficiency.
  3. Unbalanced load: Unbalanced load will cause uneven force on the gear bearings and accelerate gear wear.


Solution: Choose high-quality gears to ensure the service life of the gears; regularly check the wear of the gears and replace the severely worn gears in time; adjust the load balance to ensure the smooth operation of the gear transmission.

Fault 3: Poor sealing

Poor sealing is one of the common faults of worm gear reducers. The main reasons for poor sealing are as follows:

  1. 1. Aging of the gasket: The use of the gasket for too long will cause aging and failure, causing leakage. 
  2. Improper installation: Failure to properly install the seal during installation or damage to the gasket will cause leakage.
  3. Wear: Long-term work will cause the seal of the worm gear reducer to wear, causing leakage.

Solution: Replace the seal regularly to ensure the normal use of the seal; install it strictly in accordance with the installation requirements to ensure that the seal is intact; regularly check the wear of the seal of the worm gear reducer and replace it in time.

Fault 4: Excessive temperature rise

Excessive temperature rise is one of the common faults of the worm gear reducer. The main reasons for excessive temperature rise are as follows:

  1. Poor lubrication: Insufficient lubrication or aging of grease in the worm gear reducer will increase the friction of the transmission parts, thereby causing excessive temperature rise.
  2. Overload work: Overload work will increase the friction of the transmission parts of the worm gear reducer and accelerate the temperature rise.
  3. Poor cooling: Failure or poor design of the cooling system will cause insufficient heat dissipation of the worm gear reducer, thereby causing excessive temperature rise.

Solution: Regularly check the lubrication and replace the aged grease; use the worm gear reducer reasonably to avoid overload work; check the working condition of the cooling system to ensure good heat dissipation effect.

Fault 5: Excessive noise

Excessive noise is one of the common faults of worm gear reducers. The main reasons for excessive noise are as follows:

  1. Poor gear quality: Low-quality gears are prone to noise.
  2. Bearing damage: Bearing damage will increase the friction of transmission parts and aggravate the noise.
  3. Unbalanced load: Unbalanced load will increase the vibration of the worm gear reducer, which will cause noise.


Solution: Choose high-quality gears to avoid noise problems caused by low-quality gears; check the bearing condition regularly and replace damaged bearings in time; adjust the load balance to reduce the noise caused by vibration.