Cross roller bearing is a special type bearing with inner ring divided and outer ring rotated.Because the inner or outer ring is divided, after loading the roller and the spacer retainer, it is fixed together with the cross roller shaft ring to prevent separation from each other, so the operation is simple when installing the cross roller shaft ring.Because cross roller bearings are divided into inner and outer rings, the bearing clearance can be adjusted. Even if they are preloaded, they can rotate with high precision. Because of the special structure, they are generally used in joint bearings of industrial robots.

There are two main categories of bearings used in industrial robots: uniform section thin-walled bearings and cross roller bearings.Industrial robot bearing is one of the key accessories, suitable for industrial robot joint parts or rotating parts, machining center of the rotating table, the rotating part of the manipulator, precision rotating table, medical instruments, measuring instruments, IC manufacturing devices and a wide range of applications.

Advantages of cross roller bearings for robots:

1. With excellent rotation accuracy

The internal structure of the cross roller bearing adopts rollers perpendicular to each other in 90° crossover arrangement, and a spacer or isolation block is installed between the rollers, which can prevent the tilt of the rollers or the friction between the rollers, and effectively prevent the increase of the rotation torque.In addition, one side of the roller contact phenomenon or locking phenomenon will not occur;At the same time, because the inner and outer rings are separated structure, the gap can be adjusted, even if the prepressure is applied, the high-precision rotating motion can be obtained.

2. Simplified operation and installation

The outer or inner ring, which is divided into two parts, is fixed together after the roller and retainer is installed, so the operation is very easy to install.

3, bear large axial and radial load

Because the rollers are arranged vertically with each other on the 90° V-shaped grooved rolling surface by means of spacer reachers, this design enables cross roller bearings to withstand large radial, axial and torque loads in all directions.

4. greatly save the installation space

Cross roller bearing inner and outer ring size is the miniaturization of minimal, especially ultra-thin structure is close to the limit of small size, and high rigidity, so it is suitable for industrial robot joint parts or rotating parts, machinery processing center of the rotary worktable, mechanical rotary department, precision rotary worktable, medical instruments, measuring instruments, such as IC manufacturing equipment widely used.

Is more than the advantages of industrial robots with cross roller bearing all the content, on the industrial robot with bearing on the whole, cross roller bearing is a bearing is very appropriate, make industrial robot joints more flexible, and it has excellent rotating accuracy, is also very simple to operate, bearings can carry large axial and radial load,And can greatly save the installation space.

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