NKI42 / 30 needle roller bearings _ governance (Certified) _ needle bearing is provided by LINQing municipal and needle roller bearings plant. Linqing municipal and needle roller bearings plant (www.zhgzzc.com) is specialized in the "physical ring type needle roller bearings, bearing roller type needle roller bearings, needle roller bearings curve roller type," the enterprise, the company adhering to the "integrity of management , hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Mr.Song. Needle roller bearings NA4908 identification by voice, you need to experience. Must be able to identify adequate training to achieve the sound bearing and non-bearing sound. To this end NKI42 / 20 needle roller bearings, because as far as possible by a professional person to carry out this work. Attached to the bearing shell can clearly hear the sound by listening stick. The method belongs to the working temperature recognition by comparison, is limited to little change in operating state occasions. Therefore, the temperature must be continuously recorded. When failure NKIS40 needle roller bearings, the temperature will not only rise, there will be irregular changes. The voice recognition method and the method is preferably used. Needle roller bearings investigate its role should be supported, but this is only part of its role in supporting its essence is able to bear radial load. It is also to be understood as a fixed axis. That is, it can only achieve a fixed axis of rotation, and control the movement of the axial and radial direction. For example, the motor is not bearing the consequences is simply not working. Because the axis movement in any direction possible, and electrical work required for the rotation axis only.