INA tapered roller bearing selection and use of the note

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 INA bearings, if the bearing can not meet the use requirement, 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 circular cone roller bearings generally just let us know in what type, grade, rarely on bearing clearance request, business people must ask INA bearing conditions of use, which the bearing rotating speed, temperature, fit 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, the choice of grease: the choice of grease is generally based on the speed of the tapered roller bearing, heat resistance, noise requirements and choose starting torque, etc, require business personnel to the performance of a variety of oils and fats to be understood. 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. Bearing in the automobile, household appliances motor bearing of motor bearing, motorcycle bearing, the health care professional manufacturing, motor bearing industry to make optimal INA bearing noise and life. According to the area of use and conditions of use and environmental conditions choose size, precision, with appropriate bearing is to ensure that the premise of bearing life and feasibility. Use parts: tapered roller bearing is suitable for predominantly radial load under the combination of radial and axial load, usually used in two sets of bearing pairs, mainly should be in the car before and after the wheel hub, active transmission parts, such as bevel gear, differential, reducer. Allows speed: under the correct installation, lubrication good environment, allowing for the INA bearing limit speed of 0. 3 - 0. 5 times. Generally under normal circumstances, with 0. 2 times the limit speed for the most appropriate. Allows tilt Angle: taper roller bearings are generally not allowed to have tilted axis relative to the shell hole, if there are any tilt, no more than 2 'biggest. Allow temperature: under normal load, and lubricant has a high temperature resistant performance, and abundant lubrication conditions, general bearing in - are allowed 30℃- Work under the temperature 150 ℃. Need to check on the machine running state, in the bearing is the focus of attention, and prepare to thoroughly check scheme has become more and more important. Because it is the most important of all components of the rotating machinery condition monitoring, in order to prevent bearing damage, to prevent unplanned maintenance equipment downtime bearing damage caused during the period of early detection of an important component part of the home. But not all the machines are equipped with the advanced equipment. In this case, the machine operators or maintenance engineer must adhere to the bearing fault signal alarm. Sound like the coo of a smooth career, high-pitched squeaky noise may be caused by a lack of bearing clearance caused by improper lubrication can cause metal sound. INA bearing outer ring grooves on the tracks will cause vibration. As if on scars caused by equipment can produce noise, the noise bearing level at different speeds. If there are intermittent noise, and then the original part, can damage, the sound, when the damage the surface of the launch date, if bearing hiss 'sound pollution often cause serious damage to the bearing, and cause huge irregular noise.