INA imported bearing selection and use of the note

Check the status of the operation of the machine and thorough examination of preparatory plan has been more and more serious. And bearing as the focus of attention, because it is the most important machine of all rotating parts. Condition monitoring is an important part of the preventive maintenance. Early detection of bearing damage in order to avoid because of the bearing damage caused by the unscheduled maintenance equipment during outage. However, not all and is equipped with the advanced instruments. In this case, the machine operator or maintenance engineers have to bearing fault signal 'remain on high alert, such as noise, temperature and vibration. 'Listen', 'touch' and 'observation' are three important factors. Provided the following opinions can be used as your reference. High temperature often said bearing is in abnormal situation. High temperature is also harmful to the INA imported bearings of lubricant. If sometimes bearing overheating can be attributed to bearing lubricant, bearing in more than 125 degrees Celsius temperature operation for a long time, will reduce the bearing life, the cause of high temperature bearings include: insufficient lubrication or excessive lubrication, lubricants contains impurities, heavy load, bearing damage, clearance, and the oil seal of high temperature and friction and so on. So the continuity of bearing temperature monitoring is necessary, whether it is measuring the bearing itself or other important parts. If it is in the running condition of the same case, any temperature change is likely to be said has been down. Bearing temperature measured on a regular basis can use thermometer, can accurately measure the bearing temperature and are displayed in accordance with the degrees Celsius. The importance of bearing, meaning that when the damage cause of equipment downtime, so this type of bearings shall be equipped with best temperature probe. Under normal circumstances, after the lubrication or lubrication of bearings in there will be a natural temperature rise and continue a day or two. 1, selection of imported bearing type, bearing model is commonly used by the user's technical personnel according to the product of form a complete set of conditions and the load bearing for selection. Business people mainly learn the user's actual load is consistent with the selected bearing, if bearing can not meet the use requirements, should suggest customer re-election model as soon as possible, but unless special products on the choice models generally do not have what problem. 2, the selection of the bearing clearance: user when buying bearings generally just let us know in what type, grade, rarely on bearing clearance request, business people must ask bearing conditions of use, which the bearing rotating speed, temperature and tolerance are directly related to the selection of the bearing clearance. Generally under 3500 RPM speed motor mostly adopts CM clearance, such as high temperature and high speed motor, require the use of relatively large clearance. Bearing clearance after assembly will rise because of the inner hole and cylindrical reduction and lead to reduce, the reduction of clearance = interference quantity x 60% ( Except the bearing chamber is aluminum) 。 Such as bearing clearance is zero before assembly. 01 mm, interference when assembling the quantity to zero. 01 mm, bearing assembly after the clearance of 0. 004mm。 In theory at zero clearance noise and bearing life can reach the best state, but in actual operation considering the problems such as temperature, bearing clearance to 0 after assembly. 002mm- 0. 004 mm is better. 3, grease choice: the choice of grease are generally according to INA imported bearing rotating speed, heat resistance, noise, requirement and select starting torque, etc, for business people to know a lot about the performance of all kinds of grease. 4, the choice of bearing seal type: the bearing lubrication can be divided into oil lubrication and grease lubrication. Oil lubricated bearing is generally choose form of bearing, grease lubricated bearing dust cover is generally selected or rubber seal seal. Dust cover suitable for high temperature or the use of good parts, seal two points contact seal and non-contact seal and contact seal dustproof performance is good but the starting torque, the sealing type starting torque is small, but there is no contact sealing performance is good. INA bearings imported in the automobile, household appliances motor bearing of motor bearing, motorcycle bearing, the health care professional manufacturing, motor bearing industry makes the optimal bearing noise and life.