FAG thrust ball bearing heat damage and judgment of the solution

Machine tool shaft parts, especially the main shaft, usually with rolling bearings or sliding bearing assembled into an organic whole, and rotate at high speed, can sometimes produce high heat. If not promptly eliminate, this phenomenon will lead to FAG bearing overheating, and makes the corresponding parts temperature rise and thermal deformation will occur, serious when they make the main shaft and tail frame range is high, which not only affect the accuracy and machining accuracy of machine tool itself, but also the bearing burn out. Generally, if the correct use of thrust ball bearings, can be used to achieve fatigue life. But there will be unexpected injury prematurely, no ability to use. This early damage, and fatigue life, it is called the fault or the quality of the accident to use limit. Much due to the installation, use, do not pay attention on the lubrication, intrusion of foreign bodies from outside, to the shaft, shell heat affected study enough. About bearing damage status, such as: FAG bearing ring, guard card injury, as a reason to consider, lack of lubricant, not suitable for, for the defect of oil discharge structure, the invasion of the foreign body, bearing installation error, the deflection of the shaft is too large, also can have these reasons. Therefore, only investigate bearing damage, the real reason is hard to come by injury. But, if you know the use of bearing mechanical and conditions of use, bearing the surrounding structure, understand before and after the accident, combined with several damage status and causes of bearing, can prevent the similar accident happen again. Bearing is available judgment, mainly considering thrust ball bearing damage degree, mechanical properties, importance, and operating conditions, to the next overhaul period. If there are the following defects cannot be used again, new FAG bearing must be replaced. Inner ring and outer ring, rolling element and cage on any one have crack or gap. 1, ring, rolling body fracture on any one. 2, rolling on the pavement, guard, rolling body CARDS have a significant injury. 3, keep wear significant or rivet significant relaxation. On page 4, raceway and rolling body rust, injury. On page 5, raceway and rolling body severe creasing and mark. 6, inner ring diameter or outer diameter surface has obvious creep. 7, due to the hot color change is obvious. 8, the bearing grease sealed, sealing ring or dust cover breakage is obvious.