Rust Prevention Method
Rust Prevention Method
2022年3月19日
Fault Identification Method of Bearing
Fault Identification Method of Bearing
2022年3月20日

Inspection and Maintenance of Rolling Sound of Bearing

Use a sound detector to check the size and sound quality of the rolling sound of the running bearing. Even if the bearing has slight peeling and other damage, it will produce abnormal sound and irregular sound, which can be distinguished by the sound detector.Inspection and Maintenance of Rolling Sound of Bearing

It is a common method to use hearing to identify irregular operation. For example, it is often used by experienced operators to detect the abnormal noise of a part with the help of an electronic stethoscope.Inspection and Maintenance of Rolling Sound of Bearing

If the bearing is in good continuous rotation state, it will make a low whine sound. If there is a sharp hiss, squeak and other irregular sounds, it often indicates that the bearing is in poor continuous rotation condition.

Sharp squeaking noises may be caused by improper lubrication. Improper bearing clearance can also cause metallic sound. Dents in the concave track on the bearing outer ring track will cause vibration and cause a smooth and crisp sound. If the knocking scar caused by installation will also produce noise, the noise will vary with the bearing speed.Inspection and Maintenance of Rolling Sound of Bearing

If there is intermittent noise, it indicates that the rolling parts may be damaged. This sound occurs when the damaged surface is rolled out. If there are pollutants in the bearing, it will often cause a hissing sound. Serious damage to the bearing will produce irregular and loud noise.Inspection and Maintenance of Rolling Sound of Bearing

a. The cleaning of bearings is divided into rough cleaning and fine cleaning, and the metal grid can be placed at the bottom of the container used.Inspection and Maintenance of Rolling Sound of Bearing

b. During rough cleaning, use a brush to remove grease or adhesion in the oil. At this time, if the bearing is rotated in oil, pay attention to the damage to the rolling surface due to foreign matters.Inspection and Maintenance of Rolling Sound of Bearing

c. During fine cleaning, rotate the bearing slowly in oil and carry out it carefully.Inspection and Maintenance of Rolling Sound of Bearing

Inspection and Maintenance of Rolling Sound of Bearing

The commonly used cleaning agent is neutral water-free diesel oil or kerosene, and sometimes warm lye is used as needed. No matter what kind of cleaning agent you use, always filter it and keep it clean.Inspection and Maintenance of Rolling Sound of Bearing

 

After cleaning, apply antirust oil or antirust grease on the bearing immediately.

Inspection and judgment:Inspection and Maintenance of Rolling Sound of Bearing

 

In order to judge whether the removed bearing can be reused, the bearing should focus on checking its dimensional accuracy, rotation accuracy, internal clearance, mating surface, raceway surface, cage and sealing ring.

 

The inspection results can be judged by those who use inertial bearings or are proficient in bearings.

The criteria of bearing judgment vary according to mechanical performance, importance and inspection cycle. In case of the following damage, the bearing shall not be reused and must be replaced.Inspection and Maintenance of Rolling Sound of Bearing

A. fracture and defect of bearing parts.Inspection and Maintenance of Rolling Sound of Bearing

B. stripping of the rolling surface of the raceway surface.

The commonly used cleaning agent is neutral water-free diesel oil or kerosene, and sometimes warm lye is used as needed. No matter what kind of cleaning agent you use, always filter it and keep it clean.

If the bearing is in good continuous rotation state, it will make a low whine sound. If there is a sharp hiss, squeak and other irregular sounds, it often indicates that the bearing is in poor continuous rotation condition.

Sharp squeaking noises may be caused by improper lubrication. Improper bearing clearance can also cause metallic sound. Dents in the concave track on the bearing outer ring track will cause vibration and cause a smooth and crisp sound. If the knocking scar caused by installation will also produce noise, the noise will vary with the bearing speed.

After cleaning, apply antirust oil or antirust grease on the bearing immediately.