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How to repair NSK bearings

wallpapers Tech 2021-03-15
Company Product Introduction
NSK Ltd was established on November 8, 1916 and is headquartered in Tokyo, Japan. Bearings are one of the staple foods of industry. The origin of the Japanese bearing industry can be traced back to the first prototype completed by the Seiko Limited Partnership of Japan in 1915. The comprehensive production of bearings required to promote the development of the Japanese machinery industry began with the establishment of the Japanese bearing industry. NSK Ltd. NSK bearings have a long history in the aviation industry. Since NSK, as a Japanese bearing pioneer , began producing bearings in Japan in 1916, it has developed and provided various types of bearings, making great contributions to the development of the industry and technological progress. With the global expansion of NSK, more and more industries and enterprises have applied NSK bearings: construction machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electric power, railways and other industries. NSK ranks No. 1 in the bearing field in Japan and No. 1 in the world. In addition, NSK has also adopted precision machining technology refined from bearing production and promoted its business expansion in various fields by expanding it to auto parts, precision mechanical products , and electronic applications. Since the 1960s, NSK Bearings has been actively exploring overseas markets. NSK also uses precision machining technology refined from bearing production to promote its business expansion in various fields by expanding it to auto parts, precision mechanical products and electronic applications. Since the 1960s, NSK Bearings has been actively exploring overseas markets. NSK also uses precision machining technology refined from bearing production to promote its business expansion in various fields by expanding it to auto parts, precision mechanical products and electronic applications. Since the 1960s, NSK Bearings has been actively exploring overseas markets.
NSK bearing maintenance method
Bearings are more common in our lives, or we can't say that we can't lack them. Because bearings are widely used, what are the methods for NSK bearing maintenance?
When removing the bearing, when inspecting and repairing the disassembled bearing, firstly record the appearance of the bearing, acknowledge the residual amount of lubricant, and remove the bearing after sampling. Scavengers are widely used in gasoline and kerosene. The dismantled bearing can be cleaned by rough washing and fine washing. Put a metal mesh in the container first, so that the bearing does not directly touch the dirt in the container.
During rough washing, if the bearing rotates with stolen goods, it will damage the rolling surface of the bearing, which should be paid attention to. In the rough washing oil, use a brush to remove the grease and adhesions. After the basic cleansing, switch to the fine washing. Fine washing is to remove the bearing carefully while rotating in the removing oil. In addition, the cleaning oil should be replaced frequently to keep it clean.
When judging whether the disassembled bearing can be reused, check after the bearing is removed, carefully check the condition of the raceway surface, the rolling surface, the cooperation surface, the wear condition of the cage, whether the bearing clearance can be added, and whether it affects the accuracy of the scale. The injury, abnormality. For non-separable small ball bearings, etc., use the one-handed flat-end inner ring and rotate the outer ring to confirm whether it can go smoothly.
For separate type bearings such as tapered roller bearings, the rolling body and the raceway surface of the outer ring can be viewed separately. Because large bearings cannot be rotated by hand, pay attention to the appearance of the rolling body, raceway surface, cage, rib surface, etc. The higher the importance of the bearing, the more careful you need to check it.
When judging whether the bearing can be used again, it is necessary to make a decision based on related factors such as the degree of damage, mechanical performance, importance, working conditions, and inspection cycle of the bearing. However, if the following shortcomings are found during inspection, the bearing cannot be used continuously and a new bearing needs to be replaced.
The cage is significantly worn, or the rivets are significantly loosened. There is significant creep on the inner diameter surface of the inner ring or the outer diameter surface of the outer ring. Any one of the inner ring, outer ring, rolling body, and cage has cracks or gaps. Significant scratches on the rolling surface, ribs, and rolling body. Bearings filled with grease, seals or dust caps are severely damaged. Any one of the ferrule and the tumbling body is cracked. There are severe indentations or bruises on the raceway surface and the rolling body. There are rust or scars on the raceway surface and the rolling body.

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