There are 3 reasons and 2 repair points of bearing damage of sand making machine

Bearing is a very important part in sand making machine, which undertakes important tasks. During the operation of the sand making machine, if there is a problem with the bearing, it will cause the sand making machine to not work normally. And bearings are often faulty. This paper mainly shares the causes and solutions of bearing damage of sand making machine.

large sand making machine

Causes of bearing damage and solutions

1, bearing fever

One reason for bearing heating is that the amount of oil in the bearing of the sand making machine is less or the dust enters the bearing, which is not conducive to lubrication, thus causing bearing heating, which requires us to use double pump oil supply to clean the bearing. If the oil pump leaks, it must be replaced to avoid greater loss; On the other hand, the bearing may be damaged. If the inspection is indeed damaged, the bearing needs to be replaced.

2. The sealing ring at the upper and lower end of the shaft is damaged

One is because the upper sleeve moves up friction on the bottom surface of the gland caused by heating; Second, because the lower sleeve moves down the friction of the lower end cover.

3. Oil seepage on the upper and lower ends of the shaft

This requires the operator to carefully check whether the sealing ring wear, because the sealing ring to move up and down with the bearing, resulting in the sealing ring wear and oil leakage, then as long as the replacement of the sealing ring.

Two points of sand machine bearing repair

First, when there is a crack in the inner and outer ring and the rolling body of the rolling bearing of the sand making machine, when the raceway and the rolling body of the inner and outer ring appear spots, the corresponding parts should be replaced. When the clearance between the rolling body and the raceway of the ring exceeds certain requirements, the corresponding parts of the sand making machine should also be replaced.

Second, if the clearance of the sliding bearing of the sand machine is large, it is generally necessary to re-pour the bearing alloy, hole, boring and other related parts. However, it should be noted that we cannot blindly process according to the manufacturer’s drawings. Different countermeasures should be taken according to the specific situation of the sand machine shaft, such as shaft change can be processed according to the manufacturer’s drawings. Used shaft to consider journal wear.

Appropriately reduce the size of the aperture, and determine the nominal size and tolerance of the aperture according to the actual size of the journal of the sand machine after grinding for the repair of the shaft of the sand making machine that needs to be polished.

The life of bearings is closely related to manufacturing, assembly and use. It must be done well in each link in order to make bearings in the best running state. So as to extend the service life of bearings and ensure the efficient operation of equipment.

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