How to remove the needle roller bearing is faster

The same needle roller bearing you remove in four different ways, simple analogy is tapping method, the needle roller bearing inner ring up a striking force, don't add in needle bearing roller and insist on the rack, when the needle roller bearing, at the end of the shaft, with less than the needle roller bearing inner diameter of the copper bar or other soft metal materials resist shaft end, lower part of needle bearing block, hammer knock quietly can be removed. This way of disassembly is simple and feasible, but easy to damage the needle roller bearing; And application of the method should pay attention to the position of the block placed to the right, the focus should be correct. In order to prevent the formation of needle roller bearing damage, can push method, with the aid of the role of the press push needle roller bearings, work smoothly, don't damage the machine and the needle roller bearing, but the premise is required to focus should be on the center of the shaft, shall not be partial pressure. Is a hot method, is usually used to remove the interference fit of needle roller bearing, first will be heated to 100 ℃ or so oil in oil pot pouring in to dismantle the needle roller bearing, after waiting for needle roller bearing ring heat shrinkage, can be used to pull pull it out. Before the needle roller bearing heating, to use asbestos rope or sheet iron shaft wound, avoid the shaft is heated swell, otherwise it will be hard to remove, removed from the needle roller bearing box shell hole needle roller bearing, only heating needle bearing box shell hole, not heat the needle roller bearing. In addition, the removal of needle bearing can also pull through method to finish, using specially puller is disassembled, simply rotate handle, needle roller bearing can be gradually. Remove the needle roller bearing outer ring, pull two foot corners should open outward; Remove the needle roller bearing inner ring, with both feet should be inward, card on the needle roller bearing inner ring end face.