How to repair KOYO bearings

1, KOYO imported bearings cleaning

When disassembling the imported bearing for inspection, first record the appearance of the bearing, confirm the residual amount of lubricant, and after sampling the lubricant for inspection, wash the bearing. As a cleaning agent, gasoline and kerosene are commonly used. The cleaning of the removed bearing is divided into coarse cleaning and fine fine washing. In the container, the metal mesh bottom is placed first, so that the bearing does not directly contact the container. In the case of fine cleaning, if the bearing is rotated with dirt, it will damage the rolling surface of the bearing and should be noted. In the rough cleaning oil, use a brush to remove the grease and the adhesive. After it is almost clean, it is transferred to the fine wash.

Fine washing is to carefully clean the bearing while rotating it in the cleaning oil. In addition, the cleaning oil should always be kept clean.

2, KOYO imported bearings for maintenance and judgment

In order to determine whether the removed bearing can be reused, check the bearing after it has been cleaned. Carefully check the raceway surface, the rolling surface, the state of the mating surface, the wear of the cage, the increase in bearing clearance, and the presence or absence of damage to the dimensional accuracy. For non-separable miniature ball bearings, use one hand to support the inner ring horizontally and rotate the outer ring to check if it is smooth.

Separate bearings such as tapered roller bearings can be inspected separately for the rolling surfaces of the rolling elements and the outer ring.

Large bearings cannot be rotated by hand. Pay attention to the appearance of rolling elements, raceways, cages, and ribs. The higher the importance of bearings, the more careful inspection is required.

The judgment of whether or not to reuse is determined in consideration of the degree of bearing damage, mechanical properties, importance, operating conditions, and the period until the next inspection. However, if you have the following defects, you can no longer use them. New bearings must be replaced.

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How to maintain and maintain the spindle of FAG imported bearings

First, the performance and characteristics of the spindle imported FAG bearings:

Spindle bearings are used as textile-specific FAG bearings, and their structural composition is quite special. It adopts a single-row radial short cylindrical roller structure without inner ring and is a high-speed precision FAG imported bearing that can withstand pure radial load. The assembled FAG bearings are still in the open state. Due to the assembly, packaging, transportation and user reassembly requirements, the current spindle bearings mainly use a special anti-rust oil. It not only has good anti-rust performance, but also ensures that FAG imported bearings are not prone to scatter when entering the final user assembly.

Due to the single-row radial short round roller, the series FAG imported bearings are rigid and bear large radial load; high manufacturing precision, flexible rotation, stable, low noise, suitable for high speed operation; simple structure, low power consumption; maintenance More convenient. At present, the implementation standard of the imported FAG bearing series of products is still: FZ/T92025-1994 "DZ series spindle bearing" textile industry standard.

The cage with the new reinforced nylon material has the following performance characteristics: First, the new cage adopts engineering plastics - PA66 glass fiber reinforced nylon material; second, it adopts injection molding processing method, the cage has good processability, size and shape. The stability is also good; the third is the cage with nylon material has a certain self-lubricating effect; the fourth is to optimize the design of the pocket structure, so that the swing amplitude of the roller during high-speed operation is reduced, so that To a lesser extent, noise.

Second, the correct use of spindles FAG bearings:

1. FAG bearings will be affected by the size, shape and accuracy of the bearing housing of FAG bearings. The best performance cannot be achieved. For example, if the dimensional accuracy and shape accuracy of the inner bearing of the bearing housing are not good, the outer ring of the FAG bearing will be deformed, which will cause the roundness of the inner hole of the FAG bearing to deteriorate. If the shoulder accuracy is not good, the outer ring of the FAG bearing bearing will be produced. The tilting of the roller will aggravate the concentrated load, which will reduce the fatigue life of the FAG bearing. It will cause the cage to be damaged and sintered more seriously. If the FAG imported bearing inner ring of the spindle, the FAG imported bearing gear has poor precision, such as size and roundness. Accuracy in terms of cylindricity, waviness, roughness, position, etc., will also significantly increase the vibration value of the entire set of spindles.

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