NTN one-way bearing installation and use of environmental impact on life important

Floating bearing if used in harsh environment, NTN bearing seal and seal cover is indispensable, because they can prevent dirt intrusion, extend the life of the bearing. In mill roll usually is supported by four columns one-way bearing seal. When using requirements under strong impact load, the intrusion of water and debris. NTN bearing test should rotate after installation, first used in the axis of rotation or bearing box, without exception, with a power of no load, low speed, then according to the condition of operation gradually increase the speed and load, and detection noise, vibration and temperature rise, found abnormal, should stop and check. Running test normal rear deliverables. According to the area of use and conditions of use and environmental conditions choose size, precision, with appropriate one-way bearing is the prerequisite of bearing life and reliability. 1, parts of use: apply to carry to mainly consisting of radial load and axial union load, usually in two sets of matching using one-way NTN bearing, mainly should be in the car before and after the wheel hub, active transmission parts, such as bevel gear, differential, reducer. 2, allowed temperature: under normal load, and lubricant has a high temperature resistant performance, and abundant lubrication conditions, general imported bearing in - are allowed 30℃- Work under the temperature 150 ℃. 3, allows tilt Angle: bearing generally are not allowed to have tilted axis relative to the shell hole, if there are any tilt, no more than 2 'biggest. 4, allows speed: under the correct installation, lubrication good environment, allowing for a one-way bearing limit speed of 0. 3 - 0. 5 times. Generally under normal circumstances, with 0. 2 times the limit speed for the most appropriate. NTN bearing on the basic requirement of materials depends largely on the bearing performance. Choose rolling bearing materials is more appropriate are made, has a great influence on the its using performance and life will be. In general, NTN bearing is the main damage form under the action of alternating stress fatigue spalling, and make bearing precision loss due to friction and wear. In addition, there is crack, indentation, corrosion causes such as bearing abnormal damage. One-way bearing, therefore, should have high ability to resist plastic deformation, less friction and wear, good rotation accuracy, good dimensional accuracy and stability, as well as the long contact fatigue life. Performance and some of them are jointly decided by the material and heat treatment process.