Using the environment of NTN bearing compressive noise detection method

NTN bearing the use of the environment: 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 angular contact ball bearing life and reliability. Use parts: angular contact ball bearing is suitable for predominantly radial load under the combination of radial and axial load, usually in pairs using two sets of NTN bearing, 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 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, average angular contact ball bearings in - are allowed 30℃- Work under the temperature 150 ℃. First, check the angular contact ball bearing vibration in the working situation from peeling, indentation, rust, crack and wear will reflect in the bearing vibration measurement, NTN bearing vibration is very sensitive to plastic bearing damage, therefore, by adopting special bearing vibration measuring device ( Frequency analyzer, etc. ) Can measure the size of the vibration, through frequency points cannot deduce the abnormal situation. Due to the measured values of bearing or sensor installation position and different using conditions, requires measurements of each machine in advance after analysis and comparison to determine the judgment standard. Second, check the angular contact ball bearings rolling voice situation because NTN bearing even with slight stripping damage, also an exception and irregular, and so on with the sound of the measuring device can distinguish, USES the sound device, the size and quality of plastic bearings rolling sound in operation to check, have the effect of prevention in advance. Third, we should check the temperature of the angular contact ball bearing rotates if using the oil hole can directly measure temperature of bearing outer ring, is more appropriate. In general, NTN bearing temperature, average according to the plastic bearings on the surface of the outdoor temperature can be predicted. If the appropriate lubrication, installation department, the bearing temperature will rise sharply, appear unusually high temperature, must stop at this moment, take the necessary precautions.