IA ball screw bearing use damage countermeasures

INA bearing structure design is fair and has the ability to improve the predecessor, will have a longer ball screw bearing life. Bearings are manufactured through multiple processing steps such as casting, heat treatment, turning, grinding and assembly. The fairness of each processing technology, the improvement of predecessors, and the inconsistency will also affect the life of the bearing. The heat treatment and grinding processes that affect the quality of the finished bearing often have a more direct relationship with the failure of the bearing. In recent years, research on the metamorphic layer of bearing working surface shows that the relationship between grinding process and bearing surface quality is closely related.
The metallurgical quality of INA bearing materials was once the main factor affecting the early failure of dynamic ball bearings. With the improvement of metallurgical technology (such as vacuum degassing of bearing steel), the quality of raw materials is improved. The proportion of raw material quality factors in bearing failure analysis has dropped significantly, but it is still one of the main factors affecting bearing failure. The proper selection of materials is still a factor that must be considered in bearing failure analysis.
The main task of INA bearing failure analysis is to find out the main factors causing bearing failure based on a large number of background materials, analysis data and failure modes, so as to propose improvement measures in a targeted manner, prolong the service life of bearings and avoid sudden occurrence of bearings. Early failure of sex.
1, bearing maintenance, overhaul, and abnormal handling
   In order to maintain the original performance of the ball screw bearing in a good condition for as long as possible, it is necessary to maintain, repair, and prevent accidents, ensure the reliability of operation, and improve productivity and economy. Maintenance is best carried out on a regular basis in accordance with the operating standards for the mechanical operating conditions. The contents include monitoring of operating conditions, replenishment or replacement of lubricants, and inspections for periodic disassembly.
   As a maintenance item during operation, there are INA bearing rotation sound, vibration, temperature, lubricant status, and so on.
2, bearing damage and countermeasures
   In general, if the INA bearing is used correctly, it can be used until the fatigue life is reached. However, there will be accidents that are prematurely damaged and are not resistant to use. This early damage, as opposed to fatigue life, limits the quality of what is known as a fault or accident. Many of them are caused by inadvertent installation, use, and lubrication, and foreign objects intruding from the outside are insufficiently studied for the thermal effects of the shaft and the outer casing.
   Regarding the damage state of the bearing, for example, the jam of the ferrule of the roller bearing, as a cause, the lubricant is insufficient, unsuitable, the defect of the oil supply structure, the intrusion of foreign matter, the mounting error of the ball screw bearing, the shaft If the deflection is too large, there will be coincidences of these reasons.
   Therefore, it is difficult to know the true cause of the damage by only investigating the bearing damage. However, if you know the mechanical use of the bearing, the conditions of use, the structure around the INA bearing, and the situation before and after the accident, combined with the damage state of the ball screw bearing and several reasons, it can prevent similar accidents from happening again.

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