high quality ball slewing ring bearing in stock

1.The common noise of slewing ring bearing is dust sound and scar sound.

The two solutions are as follows:

(1) Control method of dust sound

There are foreign objects such as dust in the rotary branch, and non-periodic vibration will occur.

Dust noise control method: improve the cleaning method of slewing ring/slewing bearing, strictly clean the bearing, shaft, seat hole and matching parts before installation; remove foreign matter in the lubricant; improve the sealing of the bearing; avoid the use of impure materials Or plastic cages with embedded foreign objects.

(2) Control method of scar sound

If the rolling surface of the slewing ring bearing is cracked, indented or corroded, periodic vibration and noise like riveting rivets will occur. The period may be fixed but most of them have a certain corresponding relationship with the rotation speed, and the scars will be continuous on the channel.

Occurs, scars appear and disappear on the steel ball, and this noise varies with installation and lubrication conditions.

The control method of this kind of noise: do not knock the bearing during installation, prevent the bearing from tilting when assembling the bearing and the shaft and then put it into the bearing seat; prevent the slewing bearing from rusting during storage and prevent shock and vibration during transportation; use high-viscosity grease .

(3) Noise caused by lubricating factors and its countermeasures

Incorrect selection of lubricant, insufficient lubricant or aging and hardening can cause vibration and noise in slewing ring bearing /slewing bearing, and this noise has no certain rules.

In this case, only the appropriate lubricant is selected, the amount of lubricant is adjusted, the service life of the lubricant is prolonged, and the replacement cycle is reasonably determined.

(4) Noise related to the host and its countermeasures

This kind of noise is not simply caused by the bearing, so it is ineffective to find the cause from the slewing bearing alone. The main engine should be paid full attention to, and the performance of the main engine should be improved if necessary. Now mainly describe the common buzzing sound and frame resonance sound in the motor.

A Motor buzzer and its countermeasures

The axial vibration of the motor shaft will cause a large high-frequency noise – buzzing sound, the frequency of which is the same as the axial vibration frequency, which can be constant or variable. The method to prevent buzzing is the same as the method to prevent axial vibration.

B-bearing frame resonance sound and its countermeasures

When the axial natural vibration of the outer ring mass system causes the axial bending natural vibration of the slewing ring bearing frame, a kind of noise called resonance sound will be generated.

The method of increasing the preload can increase the axial natural frequency of the outer ring mass system, destroy the resonance condition and reduce the noise.