What are the commonly used rolling bearings demolition methods

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      Rolling commonly used in demolition methods: percussion method, pull out the law, the push method, hot-split method.

First, the percussion method

Percussion force is generally added to the bearing inner ring, percussion force should not be added to the bearing rolling element and cage, this method is simple, but easy to damage the bearings when the bearings are located on the end of the shaft, less than the bearing diameter brass or other soft metal materials against the shaft end bearing lower part of the plus pad, hand hammer gently tap to remove. The method was used should be noted that pad placed to be appropriate, the focus should be correct.

Second, the pull out method

Special puller, demolition, rotate the handle, the bearing will be pulled out slowly. Remove the bearing outer ring, the puller legs corners should go out there; the demolition of the bearing inner ring, pull with both feet should be within the card-side surface of the bearing inner ring.

Note:

1, should be pulled with the retractor hook bearing inner ring, instead of the hook on the outer bearing, so as not to loose excessive or damaged;

2, using the puller to make the screw alignment axis of the center of the hole shall not be skewed. Should also be noted that the retractor and bearing, do not retractors and bearing damage;

3, pay attention to prevent retractor spondylolisthesis;thin section ball bearing

Four corners of the puller legs to less than 90 °.

Third, the push method

Pressure bearing press to push, smooth and reliable, does not damage the machine and bearing. Presses have to manually push, push the mechanical or hydraulic presses.

Note: press the focus should be on the center of the shaft, not the pressure bias.

Fourth, hot-split methodthin bearing

For the demolition of a tight fit of the b earing. First heated to 100 ℃, oil oiler pouring in the bearings to be demolished, to be the thermal expansion of bearing ring, you can pull a bearing pull out.

Note:

1, first of all, it should pull with installation on the bearings to be demolished, and put some tension;

2, before heating, the use of asbestos rope or thin iron shaft bandaged to prevent axial heat swell, otherwise it will be difficult to disassemble, only heating the bearing housing shell holes from shell hole when the bearing of the demolition of the bearing housing, can not be heated bearings;

3, and poured oil, to oiler steadily poured on the bearing rings or rolling bodies, and set an oil basin underneath to collect drips hot oil, to avoid waste and burn;

4, the operator should wear asbestos gloves to prevent burns.thin section ball bearings