RU series cross roller bearings widely used on Industrial robots

RU series cross roller bearings widely used on Industrial robots

RU series cross roller bearings for industrial robots: 

Product features

RU series Cross roller bearings are two rows of cylindrical rollers arranged perpendicular to each other on a 90 degree V-shaped raceway through nylon isolation blocks. Therefore, cross roller bearings can withstand multi-directional loads such as radial loads, axial loads, and torque loads. The size of the inner and outer rings has been miniaturized, and the extremely thin form is a small size close to the limit, with high rigidity. The precision of the cross roller bearings industrial robots bearingscan reach P2 level. Therefore, it is suitable for joint rotating parts of industrial robots, rotating tables of machining centers, precision rotating workbenches, medical machines, calculators, IC manufacturing devices and other equipment.

Series models

RU42 CRBF2012

RU66 CRBF3515

RU85 CRBF5515

RU124 CRBF8022A, RU124X CRBF8022AT , RU124G

RU148, RU148X, RU148G

RU178, RU178X, RU178G

RU228, RU228X, RU228G

RU297, RU297X, RU297G

RU445, RU445X, RU445G

Application

The joint parts or rotating parts of industrial robots, rotating workbenches of machining centers, rotating parts of robotic arms, precision rotating workbenches, rotating towers, medical instruments and other applications.

RU type cross roller bearings (with integrated inner and outer rings and mounting holes) do not require fixed flanges and support seats during installation, as both the outer and inner rings have mounting holes. In addition, since both the outer and inner rings are integral structures, installation has almost no impact on performance, thus achieving stable rotational accuracy and torque. Suitable for situations where the outer and inner rings rotate.

Structure of crossed cylindrical bearings

The structure of crossed cylindrical roller bearings is divided into three forms: outer ring segmentation, inner ring integration, and outer ring and inner ring integration. The rolling elements are cylindrical rollers arranged vertically at 90 ° to each other in a V-shaped raceway, and the rollers are separated by isolation blocks. This structure allows a single bearing to withstand loads in various directions such as axial load, radial load, and overturning moment. At the same time, due to the maximum miniaturization of the external dimensions, and the high rigidity, high rotational accuracy, and high load-bearing capacity of the bearings, they are most suitable for the joint or rotating parts of industrial robots, the rotating worktable of machining centers, the rotating parts of robotic arms, precision rotating worktables, medical machines, measuring instruments, and other applications.

Types and characteristics of crossed cylindrical roller bearings

RU type (outer ring and inner ring integral type), as both the outer and inner rings have mounting holes, there is no need to fix flanges and support seats during installation. In addition, due to the integral structure of both the outer and inner rings, installation has almost no impact on performance, so stable rotation accuracy and torque can be obtained, which can be used in situations where the outer and inner rings rotate.

Cross roller bearings have a wide range of applications in the aerospace industry. Due to the precise positioning and reliable support required for aerospace equipment, cross roller bearings can provide high-precision, high stiffness, and high stability support and transmission. For example, in the motion mechanisms of aircraft such as landing gear, missiles, and drones, cross roller bearings can withstand harsh environments such as high speed, high temperature, and high load, ensuring the stable operation of the equipment.