Cross Roller Bearing

Cross roller bearings are a special type of bearing characterized by inner ring segmentation and outer ring rotation, commonly used as joint bearings in industrial robots. The unique structure of this bearing can provide high rotational accuracy and stiffness in a small space, significantly saving material costs. The design of cross roller bearings allows for the installation of two sets of bearing raceways and rollers in a right angle cross on a 90 ° V-shaped groove rolling surface, with adjacent rollers arranged in opposite directions, enabling them to withstand loads in all directions, including radial and axial loads. The size of the inner and outer rings of this type of bearing is minimized, especially for some extremely thin and small sizes that are close to the limit, and it has high rigidity. Therefore, it is very suitable for use in 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, and other situations that require high rigidity, tightness, and can still ensure accuracy at high speeds.

The internal structure of cross roller bearings is unique, using cylindrical or tapered rollers arranged in a cross shape in a single raceway groove. The spacing between the rollers is maintained by brass retainers or engineering plastic isolation blocks, ensuring high rotational accuracy, large bearing capacity, and compact external dimensions of the bearing. This design enables cross roller bearings to perform excellently in multiple fields, especially in industrial robots, machining centers, precision instruments, and other areas where they have been widely used. In addition, the installation design of cross roller bearings considers simplicity, as the outer or inner ring is divided into two parts and fixed together after installing the rollers and retainers, making the installation process very simple. These characteristics make cross roller bearings an ideal choice for applications that require high performance but compact space