INA bearings' selection and using

One, INA Bearing selection
1, INA Bearing selection: INA Bearing is normally provided by the user of the technical staff supporting the use of the product according to the conditions and bear the load for INA Bearing choose. Main business personnel to understand the user's actual load is consistent with the selected INA bearings, INA Bearing reach if requirements should advise clients to re-election as soon as possible models, but unless special products in the choice of models is generally not a problem.
2, INA Bearing clearance choice: users buy INA bearings generally only advise on what type, grade, rarely will INA bearing clearance requests, business people must ask INA Bearing conditions of use, which INA bearing speed, temperature, tolerances are directly related to the choice of INA bearing clearance. Usually in the 3500 r / min rotational speed of the motor they use the CM clearance, such as high-speed motor requires a relatively large clearance. INA Bearing clearance in the assembly because of swollen and bore cylindrical narrowing caused by reduced clearance reduction = the amount of interference × 60% (INA bearing chamber except aluminum). INA Bearing assembly before such clearance is 0.01mm, the amount of interference during assembly of 0.01mm, the INA bearing assembly after clearance of 0.004mm. In theory INA Bearing noise at zero clearance and lifetime will achieve the best state, but in the actual operation taking into account the temperature rise problem, INA Bearing clearance in the assembly preferably is 0.002mm-0.004mm.
3, oil of choice: the choice of grease is generally under INA bearing speed, temperature conditions, noise requirements and other aspects of starting torque selection, requiring a variety of oils and fats business staff performance very understanding.
4, INA bearing seal type selection: INA bearings can be divided lubrication oil lubrication and grease lubrication. Oil lubricated bearings are generally used in the form INA INA bearings, INA bearings greased generally used shields or rubber seals seal. Dust cover for high temperature or environment good parts, seals of contact seals and non-contact sealing, the contact seal dustproof performance is good but the starting torque, non-fit seal starting torque is small, but the sealing performance No contact is good. INA Bearing INA bearings currently in the motor vehicle, appliance motor INA bearings, INA Bearing motorcycle, health and other sectors of the motor INA Bearing a specialized manufacturing, INA bearings make noise and life at their best.

Two, INA bearings should be used with precautions
1, the shaft and the bearing housing tolerances INA choice and control: INA bearings INA bearings pressed into the post should be flexible rotation without a sense block. If significant rotation is not flexible, it indicates that the shaft size is too large, tolerance to downward. If INA bearings pressed into the shaft turned by hand obvious "imperfections" sense, it may be too much tolerance of the shaft or shaft roundness bad. So good control shaft and the bearing housing tolerances INA also control the roundness, many domestic manufacturers only tolerance control, no roundness control.
2, INA Bearing assembly methods: Because INA bearings are precision products, such as improper assembly is very easy to damage the channel INA bearings, INA bearings cause damage. INA bearings in the assembly should have a dedicated mold and can not beat the pressed into the shaft when the force only a small circle, the circle can only push a large circle force. Assembly requires the use of pneumatic or hydraulic, press-fit upper and lower mold to remain outside the state level, if inclined channel will lead to damage due to power INA bearings, INA Bearing leaving the guide ring.
3, the assembly to prevent foreign bodies: INA bearings mounted to the rotor can easily do balancing balancing generated when the iron filings into the interior of INA bearings, INA bearings mounted so it is best to do before balancing. There are some manufacturers in order to facilitate assembly, the assembly room painted in INA bearings from some oil or grease lubrication effect, but often difficult to operator control the amount, if the oil or grease in INA bearings indoor accumulates more in INA bearings along the axis of rotation is easy to enter the INA bearing. INA bearing chamber preferably not coated with oil or grease, such as non-coated non-INA bearings shall have to control indoor accumulates.
4, paint rust prevention: paint rust characterized by multiple in sealed-type motor, motor in the assembly sounds good, but put in the warehouse for some time, the motor becomes very abnormal sound, remove the INA bearings severe rusting. Many manufacturers will be considered INA bearings problems, through our continuous publicity, and now the motor plant has been realized mainly insulating paint problems. The problem is mainly because the insulating paint out of the volatile acidic substance at a certain temperature, humidity, the formation of corrosive materials, the INA Bearing INA Bearing channel cause corrosion damage. The problem can only be a good selection of insulating paint, and after a period of time after drying ventilation assembly. INA Bearing life is associated with manufacturing, assembly, use all closely related, must make every link in order to make INA bearings in the best operating condition, thus extending the life of INA bearings