The same material INA Bearings first vibration under different conditions using the same material rubber bearings under different conditions were measured, and the vibration of the measuring point and the points vibration signal 03200Hz acceleration level In order to judge the size parameters of vibration intensity. The horizontal vibration of the rubber bearing specimen at significantly less than the vibration of the vertical direction and the other measurement points, each measuring point at the vibration intensity increases with the increase of speed, the pressure (load), and using a high hardness INA Bearing Materials this impact. The vibration of bearings of different materials in the same conditions in the same conditions, using the type of material of the rubber bearing vibration acceleration spectrum of the measurement points is very similar, which is mainly due to the external excitation is not much change. 1,2 material rubber bearings, vibration significantly than material rubber bearings is lower, the reduction ranges of 322dB.
Hardness rubber bearings to reduce the effects of vibration. In order to facilitate the analysis of the reasons, we will simplify test shafting to the exciting force and the excitation torque; INA bearings is simplified to a support having a horizontal and vertical direction of the elastic stiffness and damping components; shafting be simplified to the elastic rod element, and at the load to be treated as a rigid fixed connection. In the shafting the test, the position of the rubber bearing and the negative cut-off apparatus closer, when the hardness of the rubber bearing material is increased, the increase in the elastic stiffness, damping is reduced, and thereby with the load on the the shafting rigid fixation together to strengthen the shaft Department of the vibration suppression effect. Wear of the test specimen still running after a period of time (a few days and nights) were measured, and the results show that the wear of the four test pieces away from obvious. Select the appropriate hardness of the rubber bearing material can effectively suppress the vibration of the shafting.
Product Model | Inside Diameter | Outside Diameter | Thickness |
4T-420/414 NTN | 40 | 88.5 | 29.083 |
4T-350A/354A NTN | 40 | 85 | 21.692 |