NSK bearings rolling installation and use of common problems

1, the installed on surface and the place has a requirement? If NSK bearings with iron filings, burr, dust and other foreign matter to enter, NSK bearings will make noise and vibration during operation, and even damage raceway and rolling body. So, before the installation of NSK bearings, you must ensure that the installation surface and the environment clean. 2, NSK bearings must be cleaned before installed? NSK bearing surface coated with anti-rust oil, you must use clean petrol or kerosene cleaning carefully, then coated with clean, high quality or high speed high temperature lubricating grease before installation. NSK bearing life and cleanliness of the influence of vibration noise is very big. But we especially want to remind you is: fully enclosed NSK bearings need cleaning refueling. 3, how to select grease? NSK bearing lubrication of work and life have very important influence. Here a brief introduction to select the general principles of the grease to you. Grease made out of base oil, thickener and additive, different types and different type of same kind grease properties vary widely, allowing the rotation of the limit, when the choice is important to note. The performance of the grease is mainly determined by the base oil. The basis of generally low viscosity oil is suitable for low temperature, high speed; High viscosity is suitable for high temperature, high load. Thickener and relationship with lubrication performance, thickening agent, water resistance to the water resistance of the grease. In principle, different brand of grease can't mix, and even the same thickening agent of grease, will also bring bad influence each other on the basis of different additives. 4, when the NSK bearing lubrication, oil paint, the more the better? NSK bearing, lubricating grease coating, the more the better, this is a common mistake. NSK bearings NSK bearings and indoor excessive grease will cause excessive oil mixing, resulting in a high temperature. 5, how to install and disassemble? NSK bearings installed do not directly hammer end face and the bearing surface, should with briquetting NSK bearings, sleeve or other installation tools make uniform stress. If the installation surface coated with lubricating oil, will make the installation more smoothly. If the interference fit is larger, should put the NSK bearings in the mineral oil heating to 90 ~ 100 ℃ in immediately after installation. When removing difficulties, it is recommended that you use disassembly tool to pull at the same time to careful labor the inner ring of hot oil, heat can make the NSK bearing inner ring expansion, making it easier to fall off. 6, NSK bearing radial clearance as small as possible? It isn't. All NSK bearings require minimum clearance to work, you must choose appropriate clearance according to conditions. Gb 4604-93, NSK bearings rolling radial clearance is divided into five groups - 2, 0, 3, 4, 5, clearance values in sequence from small to large, including standard clearance for 0 group. Basic radial clearance group applicable to the general operation conditions, the conventional temperature and the range of the commonly used; In the high temperature, high speed, low noise, low friction work under special conditions such as NSK bearings are appropriate chooses big radial clearance; For precision NSK bearing spindle, machine tool spindle with appropriate chooses the smaller radial clearance; NSK bearings for roller clearance can keep a small amount of work. In addition, for the separation of NSK bearings are no clearance; Finally, NSK bearings work clearance after installed, small than the original clearance before installation, because of NSK bearings to withstand the load rotation, and NSK bearing fit and load produced by the elastic deformation.