In cross roller bearings, due to the cylindrical rollers being arranged perpendicular to each other on a 90 ° V-shaped groove rolling surface through spacers, they can withstand loads in radial, axial, and torque directions. The size of the inner and outer rings has been minimized to a near small size and has high rigidity, making it suitable for applications such as joint or rotating parts of industrial robots, rotating workbenches of machining centers, rotating parts of robotic arms, precision rotating workbenches, medical machines, measuring instruments, IC manufacturing devices, etc.

Cross roller bearings, due to the segmented inner or outer ring, are fixed together with the cross roller collar after installing the rollers and spacers, so that they can be separated from each other. Therefore, the installation of the cross roller collar is simple to operate. Due to the cross arrangement of rollers, only one set of cross roller collars is needed to withstand loads in all directions, which increases the rigidity by 3-4 times compared to traditional models. Meanwhile, due to the fact that the inner or outer ring of the cross roller bearing is a two-part structure, the bearing clearance can be adjusted, allowing for high-precision rotational motion even when preloaded.

1. Has excellent rotational accuracy

The internal structure of the cross roller bearing adopts rollers arranged in a 90 degree perpendicular cross arrangement,

There are spacers or isolation blocks installed between the rollers, which can be used to observe the inclination of the rollers and increase the rotational torque. In addition, there will be no contact or locking phenomenon between the rollers; At the same time, because the inner and outer rings are segmented structures, the gap can be adjusted, and even if preloading is applied, high-precision rotational motion can be obtained.

2. Simplified operation and installation

The outer or inner ring, which is divided into two parts, is fixed together after installing the rollers and retainers, making installation simple.

3. Endure significant axial and radial loads

Because the rollers are arranged perpendicular to each other through spacers on a 90 ° V-shaped groove rolling surface, this design allows cross roller bearings to withstand large radial loads, axial loads, and torque loads in various directions.

4. Significantly save installation space

The inner and outer ring dimensions of cross roller bearings have been minimized to a small size, which is structurally similar and has high rigidity, making them suitable for a wide range of applications such as joint or rotating parts of industrial robots, rotating workbenches of machining centers, rotating parts of robotic arms, precision rotating workbenches, medical instruments, measuring instruments, IC manufacturing devices, etc.

5. High rotational speed capability

6. Reduce shaft length and processing costs, as thermal expansion leads to limited changes in geometric dimensions

7. Nylon divider is used, with low moment of inertia, low starting torque, and easy control of angular division

8. Optimize preload force, high stiffness, and high precision of guide roller operation

9. Permeable carbon steel provides excellent impact resistance and surface wear resistance

10. Simple but well lubricated

The RB series models (THK corresponds to the RB series, IKO corresponds to the CRB series) are the basic types of crossed cylindrical roller bearings, with the inner and outer ring sizes minimized to a minimum. Their structure is that the outer ring is segmented and the inner ring is designed as a whole, suitable for parts that require high rotational accuracy of the inner ring.