The abnormal noise of the air compressor for drilling rig usually causes the problem of overcurrent. When the abnormal sound of the current increases, the bearing of the main engine is usually heavily worn. When the sound becomes much louder and the current becomes much bigger, you can clearly hear the running sound of the bearings on both sides of the host. We can basically judge that the main engine bearing is worn too much from the uneven sound. At this point, we can solve the problem by repairing or replacing the host.
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