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.
2. The complete sets of FAG bearings have undergone strict precision matching before assembly. Therefore, before use, the scattered FAG bearing parts are not re-measured and can not be used interchangeably.
3. Regarding the cleaning problem of the imported bearings and spindles of the spindle. Due to the compact structure of the ingots, there are many other parts in the ingot cavity, and their cleanliness also affects the cleanliness of the working cavity of the FAG imported bearings. Therefore, before the assembly is pre-cleaned with the ingot parts, after the assembly is assembled, the process of fine cleaning the assembly ingots including the FAG imported bearings is a reasonable method.
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