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Removing method of bearing and the matters needing attention  

2013-03-13 17:00:01|  分类: 技术 |  标签: |举报 |字号 订阅

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Removing SKF bearings are the equipment installation and maintenance is often encountered in bench work. You must select removal method correctly, use the removal tool, suitable, force applied to the reasonable position, can be completed demolition job successfully, and ensure the bearing damage.
1 removing the matters needing attention
The understanding of the original bearing disassembly with nature, using process and has been working time.
According to the size, type of bearing, NSK bearings assembly structure of the specific conditions of selective disassembly tool, such as a puller, Jack, copper, lead, rod. Fashion needs specific conditions for a bearing disassembly, temporary making one-off disassembly tool.
The journal bearing dismounting, evenly apply force on the bearing inner ring, remove the bearing from the bearing box, evenly apply force on the bearing outer ring.
When encountered FAG bearings assembly interference of large or corrosion and other conditions, removing the difficulties, do not hard disassembly, can use heating method.
The bearing retainer, dust cover and easy deformation sealing device, do not apply force on the.
2 removing method
A press force bearing dismounting: press force disassemble the bearing is undoubtedly the best method, this method has the pressure and the pressure into the speed is easy to control, force application advantages of accurate direction smoothly, demolition in the bearing pad to merge under semicircle, press force applied to the shaft end.
B puller ( puller ) force disassembling bearing puller commonly known as: grasp, it has two kinds of 3 claws and 2 claw. When using the claw distance to adjust the appropriate point of application to inner ring.
C by the double pull rod extractor disassembling bearing: a double rod extractor homemade, will use the rod to both sides of the same length, so that the top wire puller and journal center in a straight line. Then slowly rotating screw disassembly. The remover drawback is the disassembly of parts size is fixed and can not be adjusted, and the direction of the force being applied to offset.
When removing large specification or bearing interference larger, due to the larger axial force, if mandatory force, one may remove the bearings is bad, two if applying the large axial force, bearing may be reluctant to remove, but the journal serious injury. In this case, the heating method. Using materials such as asbestos rope winding in the not to heating of the shaft, partition heat source, and hot oil, hot water or steam heating of the bearing, micro expansion and then remove the bearing, the heating temperature should be controlled at 100℃.

来源http://www.skf-nsk-bearings.com/

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