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Bearing types in different industries is a huge number

wallpapers News 2020-02-28

Spindle bearings are the necessary supporting parts of machine tools. Their performance directly affects the speed, rotation accuracy, rigidity, anti-vibration cutting performance, noise, temperature rise, and thermal deformation of machine tools, and then changes the accuracy and surface quality of machined parts. Therefore, high-performance machine tools must be equipped with high-performance bearings. Especially high-speed precision CNC machine tool bearings. The accuracy of rolling bearings is generally divided into five levels: P0, P6, P5, P4, and P2. The accuracy of bearings used on the spindle of precision machine tools should be P5 or higher. For primary shaft support, P4 and above super-precision bearings are required.

Machine tool spindle bearings usually include six types of structure, such as deep groove ball bearings, angular contact ball bearings, cylindrical roller bearings, two-way thrust angular contact ball bearings, tapered roller bearings, and thrust bearings.

Printing press bearings are used in the main cylinders of sheetfed and web presses. Due to the complexity of application requirements, only a small percentage of printed machinery bearings can be standardized. Therefore, printing press bearings include many types and sizes. In addition to the standard multi-row, high-precision cylindrical roller bearings NN, NNU, N4N, N4U, it also includes floating bearing units with or without eccentric ferrules, locating bearing units, polygon bearings, combined linear and rotary bearing units, and tapered rollers. Sub-bearing unit. There are two types of bearings: sealed and unsealed. The journals at both ends of the drum can be cylindrical or conical.

During spinning or weaving, finishing or processing, modern textile machinery is highly automated and requires uninterrupted operation with high output and trouble-free conditions. The so-called "good bearing" means low friction, high accuracy, zero backlashes, easy installation, less maintenance, long life, low noise, and high reliability. These leather wheels are easy to lubricate and have a quiet moment of inertia. Therefore, they can reach the working speed very quickly. Also, these bladder tensioners can achieve continuous operation in alternating rotary motions up to 600 times per minute with deficient energy consumption. These features make it possible to achieve a high-quality fabric at the same time that the production of the machine is greatly increased while the cost is significantly reduced.


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Tag: bearing