Thrust ball bearing should be paid attention to in the adjustment and preloaded using some knowledge

TIMKEN bearing assembly is fitter assembly and repair work often have to do an operation, and TIMKEN bearing clearance adjustment and preloaded TIMKEN bearing assembly work is an important link. Accurately grasp the clearance adjustment and pre-tightening technology concept, and in the assembly work correctly using this technique, is the assurance of quality of bearing assembly work. TIMKEN bearing clearance refers to a fixed in a ring, a ring along the radial or axial biggest activity, so the clearance is divided into radial clearance and axial clearance. TIMKEN bearing assembly, the clearance cannot too big, also not too small. Clearance is too large, will cause the load to reduce the number of roller at the same time, make single roller load increases, thus reducing the rotating precision of bearing, reduce the service life; Clearance is too small, can make the friction force increases, the heat generated by the increased, aggravate wear, also can reduce the service life of bearing. Therefore, when a lot of bearing in the assembly to strictly control and adjust the clearance. When is preloaded bearing assembly, for bearing inner ring and outer ring an axial force, to remove the bearing clearance, and make contact with the inner and outer ring roller early deformations. Preloaded can improve bearing stiffness and rotation accuracy at work. To withstand the load is larger, higher bearing rotating accuracy requirement is mostly in the absence of clearance there is even a small amount of work under the interference of the state, in this case you need 1 for bearing preload when it is assembled. Thrust ball bearing assembly method because bearings are precision products, such as improper assembly channel, it is easy to damage koyo bearings, bearing damage. In thrust ball bearing assembly should have a special mould, can't hit people, into the shaft when the pressure is only a small circle, circle, only according to the stress cycle. Pneumatic or hydraulic assembly requirements, the use of pressure to the mold under the outside installed in a horizontal state, if inclined to thrust ball bearing channel will lead to the damage caused by the power, and make the guide ring bearings bearing. 2. Thrust ball bearing of remove and install the same carefully. Note not koyo bearing and the damaged parts, especially interference fit the bearing down, and the operation is difficult. So, in the design stage to consider in advance to facilitate disassembly, designed and manufactured according to need remove the tools is also very important. When disassembling, according to the drawings the disassembly method, sequence, investigate the matching of the thrust ball bearing conditions, to ensure foolproof disassembly operations. 3. Thrust ball bearing material allows foreign hard particles in the lubricant pliers and prevent scratches or ( And) The ability of abrasive wear. For metallic materials with low hardness and elastic modulus, clamp in the sex is good, and the nonmetal material is not necessarily, carbon graphite, for example, low elastic modulus, but the clamp in the sex is bad. NSK outer spherical bearing slide usually use soft material and hard material forming friction, usually made from soft material bearing shell. 4. Check the thrust ball bearing vibration in the working situation from peeling, indentation, rust, crack and wear will reflect in the bearing vibration measurement, such as bearing vibration damage of thrust ball bearing is very sensitive, therefore, by adopting special thrust ball bearing vibration tester ( Frequency analyzer, etc. ) Can measure the size of the vibration, through frequency points cannot deduce the abnormal situation.