Bearing as the key parts of mechanical equipment, in the process of operation, the performance index quality will immediately affect the normal operation performance of industrial equipment. It is very normal for bearings to have abnormal conditions in operation. The more common abnormal conditions mainly include noise, abnormal temperature rise, large vibration (shaft tremor) and lubricant leakage too much, fading color, etc. To share with you refers to the corresponding types and coping strategies of abnormal noise found in the use of bearings, hoping to help you.

If the bearing is in a good continuous situation, it will produce a low hum or humming sound. If there is a sharp hissing, squeaking or other irregular sound, it is very likely to indicate that the bearing is in poor continuous rotation. The high-pitched squeaking noise may be caused by improper polishing. Improper bearing voids can also lead to metallic material sound.

The key three types of abnormal noise of bearing equipment are common, which are: larger metal material noise, regular noise and irregular noise.

01 Larger metal material noise

The main factors that lead to larger metal material noise from bearings are abnormal load, poor assembly, insufficient lubricant, inappropriate, etc.

Countermeasures for bearing abnormal load: adjust mutual fit, scientifically study bearing backlash, adjust preload, and adjust housing retaining shoulder position.

Countermeasures for poor bearing assembly: improve the dimensional accuracy of shaft and bearing seat, improve assembly precision and installation steps.

For the bearing lubricant is not enough countermeasures: fill the lubricant, select the appropriate lubricant.

02 Standard noise

Sometimes bearings need to produce "blow-blow-blow-sound" during operation, intermittently and regularly. This kind of noise belongs to the rules. The main causes of standard noise caused by bearings include: stamping, rust, scars caused by dirty things turning over the surface, surface deformation (after steel nitriding) and dovetail guide surface rupture.

For the dirty things turning surface caused by impression, rust, scar bearing countermeasures: disassemble bearings, clean relevant parts, improve the sealing structure, the application of clean lubricant.

For bearing (steel nitriding) surface deformation countermeasures: disassembly bearing at the same time to pay attention to its use.

Countermeasures to the fracture of bearing dovetail guide rail surface: disassemble the bearing.

03 Irregular noise

If the bearing runs with a "crunch" sound, and will not be accompanied by changes in rotary speed, such a thing is an irregular noise, often seen in small and medium-sized bearings. The main causes of these problems include: wide side gap, dirt entry and ball damage, break.

Countermeasures for too large bearing backlash: scientific study of mutual fit and bearing backlash, change the preload.

Countermeasures for dirty things to enter the bearing: scientific research disassembling bearings, cleaning relevant parts, improving the sealing structure, the application of clean lubricant.

Countermeasures for bearing ball damage or fracture: disassemble the bearing.