The importance of correct use of tapered roller bearing lubrication maintenance

According to the area of use and conditions of use and environmental conditions choose size, precision, with appropriate TIMKEN bearing is the prerequisite of bearing life and reliability. Use parts: tapered roller bearing is suitable for predominantly radial load under the combination of radial and axial load, usually with two sets of TIMKEN bearing pair is used, should be mainly in car wheel hub, before and after active transmission parts, such as bevel gear, differential, reducer. Allows speed: under the correct installation, lubrication good environment, allowing for 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 ℃. The choice of bearing grease lubrication improper in the cause of TIMKEN bearing premature failure accounted for 36%. General grease can not meet the needs of all kinds of special bearing applications, only use one or all kinds of general application to meet all of the bearing grease, problems will be caused by far outweighs the benefits of unified brand. Bearing application condition is varied, the correct lubrication is grease and bearing application conditions. Bearing grease is to guarantee the reliability of the bearing a smooth, easy operation and have the largest base, even under the most extreme working conditions. Can prevent pollutants from entering the bearing grease, buffer impact load and corrosion resistance. In the actual application to choose the appropriate grease is bearing the basic conditions for maximum service life. Correct selection of lubricant standard includes a tapered roller bearing type and size, temperature, speed, load and the desired service life and supplemental lubrication cycle. Initial radial clearance of bearing in the process of into reduced gradually, and pushed into the amount of size decide to cooperate. Prior to installation, therefore, must first measure the initial TIMKEN bearing radial clearance. In the process of bearing push, continuously measure the radial clearance, until meet the requirements of radial clearance is reduce the amount and range of the ideal. Due to temperature lubrication, rotational speed, load, the influence of environment, the temperature range of values in the table only said roughly. Bearing lubrication effect of lubrication on the fatigue life of rolling bearing, friction and wear, temperature rise, vibration and so on have important influence, not normal lubrication, bearing cannot work. Analyze the failure reasons of tapered roller bearing show that about 40% of the bearing damage is related to bad lubrication. Therefore, good lubrication of the TIMKEN bearing is an effective measure to reduce the bearing friction and wear. In addition, the bearing lubrication and cooling, sealing, rust and moderate impact of a number of roles, the effect of bearing lubrication can be briefly stated below: a. The contact between two rolling or sliding surface formed between a layer of oil film separates two surface, reduce the friction and wear of contact surface. b。 Using oil lubrication, especially the circulating oil lubrication, oil mist lubrication and oil lubrication, the bearing lubricating oil take most of the internal friction heat, effective heat dissipation effect. c。 Using grease lubrication, can prevent external dust and other foreign body into the tapered roller bearings, sealing effect. d。 Lubricant function to prevent corrosion of metal. e. Extend the fatigue life of TIMKEN bearings.