Industry classification of bearing market and guide to bearing application
- 2020/4/1 16:47:14
Industry classification of bearing market and guide to bearing application
1. Machine tool bearing
As the basic accessory of the machine tool, the performance of the spindle bearing directly affects the machine tool's speed, rotary precision, rigidity, anti-vibration cutting performance, noise, temperature rise and thermal deformation, and then affects the precision of the processing parts, surface quality.Therefore, high-performance machine tools must be equipped with high-performance bearings.Especially high - speed precision CNC machine bearings.The precision of rolling bearings is generally divided into five grades: P0, P6, P5, P4 and P2. The precision of bearings used for spindle of precision machine tools should be P5 and its superior, while for spindle support of high-speed and high-precision machine tools such as CNC machine tools and machining centers, P4 and its superior ultra-precision bearings should be selected.
Spindle bearings for machine tools usually include deep groove ball bearings, angular contact ball bearings, cylindrical roller bearings, two-way thrust angular contact ball bearings, tapered roller bearings and thrust bearings.
2. Printing machinery bearing
Press bearings are used for the main rollers of sheet-fed and web-fed presses.Due to the complexity of the application requirements, only a small part of the printing machinery bearings can be standardized.Therefore, printing machine bearings contain many types and sizes.In addition to the typical multi-column, high-precision cylindrical roller bearing NN, NNU, N4N, N4U, it also includes floating bearing units with or without eccentric rings, positioning bearing units, polygonal bearings, linear and rotary bearing combination units, and tapered roller bearing units.There are two kinds of bearing with and without seal.The journal at both ends of the drum can be of cylindrical or conical design.
3. Textile machinery bearing
Modern textile machinery is highly automated in spinning or weaving, finishing, or processing, and requires uninterrupted operation at high yields without failure.A "good bearing" means low friction, high precision, zero clearance, easy to install, little maintenance, long life, low noise and high reliability.These pulley are easy to lubricate and have a low moment of inertia.Therefore, they can reach working speed very quickly.In addition, these belt tensioning wheels are capable of continuous operation at up to 600 alternating rotational motions per minute with very low energy consumption.These characteristics make it possible to obtain uniform high quality fabric while greatly increasing the production and significantly reducing the cost of the machine.