NTN thrust ball bearing lubricant use regular inspection method - bearing knowledge

NTN bearing grease the stand or fall of choice for the stable operation of the equipment has a close relationship with, in order to better play to the bearing in the best condition, several important factors: the following is a selection of grease mechanical type; Thrust ball bearing type and size; Working temperature; Working load; Speed range; Work, such as vibration and the direction of the main shaft is horizontal or vertical. Cooling condition; The sealing effect; Peripheral environment. With little lubricant in friction between two fingers, and if the presence of pollutants, can be felt; Or in the back coating lubricant, then seal optical inspection. Used engine oil lubrication thrust ball bearing after xie used engine oil, if possible, should be impregnated with fresh oil and let the machine in low speed rotation for a few minutes. As far as possible make the oil collecting residual pollutants, and then purging in addition to the oil. Note: the oil before use it's best to filter it. 1) Bearing design parameters, including the number of rolling element bearings, ring throwing, wall thickness and clearance, etc. 2) Bearing parts manufacturing error: including NTN bearing raceway and rolling body surface roughness, grain degree and the roundness error. A large number of experimental study show that the waviness on the influence of the bearing vibration dominate, and the influence of surface roughness and the roundness is relatively small. 3) Bearing working conditions: thrust ball bearing in the process of operation, load, speed, lubrication condition the influence of the three aspects of bearing vibration is the largest. 4) Bearing installation parameters, bearing and shaft and bearing seat, and the bias of installation and other factors also affect the vibration of the bearing. And the use of grease lubrication thrust ball bearing in replacing grease, used by Joe in addition to the editor should avoid with cotton material come into contact with any part of the NTN bearing. Because these residues fiber may wedged in between the scroll and damage, especially the application of small bearing more need to pay attention to this problem. Check the NTN bearing, don't let thrust ball bearing exposure to pollutants or moisture environment. If the job is interrupted, should with oil or similar materials cover paper plastic film machine.