How to maintain and maintain the spindle bearing

First, the performance and characteristics of the spindle bearing:

As a special bearing for textiles, the spindle bearing has a special structure. It adopts a single-row radial short cylindrical roller structure without inner ring and is a high-speed precision bearing that bears pure radial load. The assembled integral bearing is still open. Considering 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 the bearing is not prone to scatter when entering the final user assembly.
Due to the single-row radial short-circle roller, the series of 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; convenient maintenance . At present, the implementation standard of the spindle bearing series 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 craftsmanship, 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, thus To a lesser extent, noise.

Second, the correct use of spindle bearings:

1. In the case that the bearing housing bearing hole size, shape, and precision are not good, the bearing will be affected by it and will not exert the best performance. For example, if the dimensional accuracy and shape accuracy of the inner hole of the bearing housing are not good, the outer ring of the bearing will be deformed, resulting in deterioration of the roundness of the inner hole of the bearing; if the accuracy of the shoulder is not good, the outer ring of the bearing and the inclination of the roller will be generated, which will increase the concentration. The load will reduce the bearing fatigue life, and more serious will cause the cage to break and sinter; if the bearing of the inner ring of the bearing is not accurate, such as size, roundness, cylindricity, waviness, roughness, position The accuracy of the other aspects will also obviously lead to an increase in the vibration value of the whole set of spindles.

2. The complete set of bearings has undergone strict precision matching before assembly, so the scattered bearing parts are not interchangeable before use.

3. On the cleaning of spindle bearings and spindles. Due to the compact structure of the spindles, there are many other parts in the spindle cavity, and their cleanliness also affects the cleanliness of the bearing working cavity. Therefore, before the assembly is pre-cleaned with the ingot parts, after the assembly is assembled, the process of cleaning the assembly ingots including the bearings is a more reasonable process.

4. Bearings should not be bumped and impacted during assembly. Bumps and impacts can easily cause collisions between bearing parts, resulting in bearing failure.

5. When the bearing seat is crimped, care should be taken to control the angle and strength of the crimping to avoid the deformation of the bearing parts caused by unreasonable curling.

6. For bearings that have exceeded the anti-rust period or long storage time, rust may occur or the roller may stick due to dryness of the anti-rust oil.

Third, the correct maintenance and maintenance methods for bearings:

1. First of all, when the spindle bearing in the spindle is in operation, it is necessary to fully guarantee the lubrication, and the lubricant should be regularly added according to the actual use condition, and the oil cannot be cut off for a long time. Therefore, for the user company, a better and more suitable spindle lubricant should be used. The new special spindle oil can significantly improve the lubrication performance, extend the oil change interval, extend the service life of the spindle and the bearing, and also has better anti-rust and anti-corrosion properties.

2. Secondly, the bearing with reinforced nylon material cage should be used at a temperature lower than 120 °C.

3. In addition, the spindle should be cleaned and cleaned to prevent damage and scratch the surface of the roller. To remove the residue of the bearing part as much as possible, it is better to rinse and suck the inside of the ingot to clean the residual oil. Care should be taken to avoid the use of the dumping type to cause the accumulation of cleaning waste to remain in the bearing parts, resulting in problems such as noise and wear failure of the bearings.