Bearings should be thoroughly cleaned before installation. When you install, you should use the special tool press the NSK bearings straight and evenly into, do not use hand hammer percussion, specifically prohibits tapping directly on the linear bearings. When loose when the housing washer and the hole should be repairing or replacing the bearing block hole, do not beat on the bearing surface point brass methods force the or pad. Disassembly of the bearing should be used when appropriate to pull the bearing, tapping bearings do not use chisels, Bishop.
NSK bearings are commonly used lubricant oil and grease in two ways. When the circumference of the shaft speed is less than 4-5M/s, or parts of vehicle lubricating oil cannot be used on are using grease lubrication. Grease-lubricated seals are the advantages of simple structure, loss of grease is not easy, is not affected by the temperature, add lubricating grease once you can use a long period of time.
Use grease should pay attention to two issues, is to cars manual requirements, selection of appropriate grades of lubricating grease. For example, a car water pump bearing selection Naki grease should not be, because of its poor water resistance. B is added to the linear bearing grease to amount, generally fill bearing cavity 1/2-l/3, too much is not only useless, also increases the running resistance of NSK bearings, warming heat. Special attention is the wheel bearing, promotion of "air hub lubrication", that is, apply a layer of the right amount of grease in the bearings, otherwise wasted and poor cooling and heating makes grease spills that might affect braking performance.
1) bearing heater principle: principle of unison series bearings induction heater is used in alternating magnetic field produces eddy currents in the metal heating the bearing itself, principle is thicker metal when bearing heater produces an alternating magnetic field, can produce electricity due to electromagnetic induction. Thicker metal bearing after heating current, current will get spiral flow path inside the bearing, current flow and the heat generated is absorbed by the metal itself, can lead to heat expansion soon reached an interference fit of the bearing Assembly requirements. General bearing on when heater is prone to magnetic, it is best to choose one of the bearing heat heating + demagnetization machine. bearing heater demagnetization is the use of electromagnetic theory, 380V/50HZ AC power forward and backward alternating magnetic field in the coil, so as to achieve the demagnetization effects. Differences with other forms of Assembly interference fit of the bearing Assembly, many bearing is damaged during installation, heating method is one of the main causes of NSK bearings. The welding tool heating will lead to deformation of the bearing; the stove heating, heated on both sides of the bearing is not uniform; oil-bath heating, bearing due to the dirty oil pollution, the noise increases; the oven heating, too time consuming. Beat installed bearings are more vulnerable to damage.
2) induction heater uses: NSK bearing heaters used for bearings, bushings, gears, couplings, diameter ring ring, cylinder-shaped type of induction heating large quantities of spare parts assembled to thermal expansion in order to meet the needs of interference fitting. Is the real level could be applied to production and assembly line of induction heater Assembly for a long time, can be adapted to the most demanding work environment.