When the worm gear reducer fails, the first thing you may think of is to find professional maintenance personnel to disassemble and repair it. In fact, when the machine breaks down, we can first do a self inspection. Listen to the sound to determine the cause of abnormal vibration and noise when the worm gear reducer starts. Now let's listen to what the old driver of the reducer manufacturer said.

Listening to the sound is mainly to listen to whether the bearing has noise. We can buy a sound listening stick in the market, and the other end of the stick is equipped with a resonator device, or use a single metal bar to listen to the sound.

Listen to the bearing noise of cylindrical gear reduction motor

Normal sound - there is no continuous metallic sound that goes up and down.

Retainer Sound - Light 'excitation' sound generated by the rotation of the roller or ball at the same time, including irregular metal sound unrelated to the speed. If the sound becomes smaller or disappears after adding lubricating oil, it will not affect the operation.

Cracking sound - the sound generated when cracks appear on the raceway surface of the bearing, the surface of the ball and roller, and its period is proportional to the speed. When the bearing cracks, it shall be replaced quickly before overheating and sintering.

'Creak' sound - most of it is made in roller bearings. The 'creaking' sound will disappear after adding lubricating oil. When there is a creaking sound without abnormal vibration and temperature at the same time, the machine can be used as usual.