Introduction of crossed roller bearing

Crossed roller bearing is a special type of bearing with inner ring split and outer ring rotating. Since the divided inner ring or outer ring is installed in the roller and the spacer, it is fixed with the cross roller collar to prevent separation from each other, so the operation is simple when installing the cross roller collar. Because the rollers are arranged in a cross, only one set of crossed roller collars can bear the load in all directions. Compared with the traditional model, the rigidity is increased by 3 to 4 times. At the same time, because the inner or outer ring of the crossed roller bearing is a two-part structure, the bearing gap can be adjusted, and even if a preload is applied, high-precision rotation can be obtained. Moreover, due to its special structure, it is commonly used as a joint bearing in industrial robots.

Crossed roller bearing rollers are arranged at right angles to each other between the inner and outer wheels at intervals. crossed roller bearing can simultaneously bear loads from all directions (such as axial, thrust or momentum loads, etc.). Because the rollers are in linear contact with the track surface, the possibility of elastic deformation of the bearing under load is very small. Crossed roller bearing is widely used in industrial automatic robots, working machinery and medical facilities, etc., where high rigidity, tightness and high speed are required to ensure accuracy.

In the crossed roller bearing, because the cylindrical rollers are vertically aligned with each other through the spacer, one crossed roller bearing can bear the load in all directions such as radial load, axial load and moment load. The size of the inner and outer rings is minimized. The extremely thin type is a small size close to the limit and has high rigidity. Therefore, it is most suitable for the joint part or rotary part of industrial robots, the rotary table of the machining center, Uses for robotic rotating parts, precision rotating tables, medical equipment, measuring devices, IC manufacturing equipment, etc.

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