The four characteristics of NSK bearing maintenance

We know that, the big local bearing after damage stopped to change under the normal conditions, but on some NSK bearings, repaired if capital is not high, we can choose to stop bearing repair. Sometimes design reference datum transformation combination repair method is too big, can't use, will choose the other side as a benchmark, and stop the dimension chain integration. NSK bearings, for example, if the body deformation is too big, should be based on rotating components, reprocessed correction bearing body, and then according to the size of reprocessed out bearing body, adjust the assembly dimension chain, use and replacement of the adjusting ring, placed inspection repair, according to the dimension chain which the control accuracy of closed ring. Benchmark unchanged composite repair method in repairing and adjusting the precision of dimension chain, on the basis of datum coincidence criterion, only choose a datum as a benchmark, namely the design basis, and all other effect the repair surface as a benchmark. This combination repair base, easy to check the accuracy, less accumulation error. For example, the speed control type hydraulic coincidence implement repair, often based on the bearing body. 1. Suitable viscosity and good viscosity-temperature characteristic for the spindle temperature is not too high and make the machine tool thermal deformation, affect the machining accuracy or NSK bearings make smooth, should be based on the main shaft bearing structure, rotational speed and bearing clearance to choose optimum temperature smooth oil and request of its good viscosity-temperature characteristics, avoid the spindle working temperature and environmental temperature change is big, the change of the viscosity is too large and affect its smooth performance. 2. Good smoothness in order to make the main shaft and bearing contact surface between adhere to have an average oil film, and in the spindle start or stop motion impact load of oil film is not destroyed, adhere to the good smooth performance plays a reduce friction and frictional heat, lowering the temperature rise of the main shaft, ensure the machining accuracy, the request has the good smooth performance. 3. Good oxidation resistance of machine tool spindle when using circular smooth way, NSK bearing oil used for a long time without change request spindle so request has good oxidation resistance. 4. Good rust resistance due to the oil in the working process of the spindle smooth system will not prevent mixed with condensed water or machine cooling fluid in the air, thus request oil has good anti-rust property.