Disassembly method of needle roller bearings

1、 The tapping force of the tapping method is generally applied to the inner ring of the bearing, and the tapping force of the shielding machine room should not be applied to the rolling elements and cage of the bearing. This method is simple and easy to implement, but it can easily damage the bearing. When the bearing is located at the end of the shaft, use a copper rod or other soft metal material smaller than the inner diameter of the bearing to press against the end of the shaft, add a cushion block at the bottom of the bearing, and gently tap with a hammer to remove it. The application of this method should pay attention to the appropriate placement of the cushion block and the correct point of application. 2、 The hot disassembly method is used to disassemble tightly fitted bearings. First, pour the engine oil heated to around 100 ℃ into the bearing to be removed using an oil pot. After the bearing ring expands due to heat, the bearing can be pulled out using a puller. 3、 The pushing method uses a press machine to push bearings, which works smoothly and reliably without damaging the machine and bearing shielding machine room. Pressure machines can be manually pushed, mechanically or hydraulically pushed. Attention: The force point of the press should be on the center of the shaft and should not be biased. 4、 The pull-out method uses a specialized puller. When disassembling, simply rotate the handle and the bearing will be slowly pulled out. When disassembling the outer ring of the bearing, the corners of the two legs of the puller should be opened outward; When disassembling the inner ring of the bearing, the two feet of the puller should be facing inward and clamped onto the end face of the inner ring of the bearing.