Crossed Roller Bearing Features and Applications
Crossed roller bearings are a special type of bearing with split inner ring and outer ring rotation. The divided inner ring or outer ring is fixed with the cross roller collar after the roller and the spacer are installed to prevent separation, 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 cross roller bearing has a two-part structure, the bearing gap can be adjusted, and even if a preload is applied, a high-precision rotary motion can be obtained. Moreover, due to its special structure, it is usually used as an articulated bearing in industrial robots.
Features of Crossed Roller Bearings
Crossed roller bearings are divided into inner or outer rings. After the rollers and spacers are installed, they are fixed with the cross roller collars to prevent them from being separated from each other. Therefore, the operation of the cross roller collars is simple. . 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 cross roller bearing has a two-part structure, the bearing gap can be adjusted, and even if a preload is applied, a high-precision rotary motion can be obtained.
1.Excellent rotation accuracy
The internal structure of the crossed roller bearings uses rollers arranged at 90 ° to cross each other vertically.
Spacers or spacers are installed between the rollers to prevent the rollers from observing each other when the rollers are tilted. In addition, one side of the roller does not contact or lock up; at the same time, because the inner and outer rings are divided, the gap can be adjusted, and even if preload is applied, high-precision rotary motion can be obtained.
2.Simplified operation and installation
The outer ring or inner ring that is divided into two parts is fixed together after the roller and cage are installed, so the operation is very simple during installation.
3.Withstand large axial and radial loads
This is because the rollers are arranged perpendicular to each other on the rolling surface of the V-shaped groove at 90 ° through the spacer.
4. Significantly save installation space
The size of the inner and outer ring of the crossed roller bearing is minimized, especially the ultra-thin structure is a small size close to the limit, and it has high rigidity, so it is most suitable for the joints or rotating parts of industrial robots and the rotation of machining centers A wide range of applications include worktables, robotic rotating parts, precision rotary worktables, medical instruments, measuring instruments, and IC manufacturing equipment.
5, high speed capability;
6, reduce shaft length and processing costs, thermal expansion causes limited changes in geometric dimensions;
7, using nylon divider, low inertia, low starting torque, easy to control angular division;
8. Optimize the pre-tightening force, high rigidity, and high running accuracy of the guide roller;
9.Carburized steel provides excellent impact resistance and surface wear resistance;
10. Simple but fully lubricated.
High Precision Crossed Roller Bearings
1. Machine tools: turret knife indexing, indexing disk, loader;
2. Robot: rotation, joint drive;
3. Semiconductor manufacturing equipment: handling robot, inspection platform;
4. Liquid crystal manufacturing equipment: driving robot, inspection platform, photosensitizer application roller drive;
5. Printing machine: driven by photosensitizer application roller.
