RU28 Crossed Roller Bearing – High Rigidity, Precision Rotation & Compact Design

The RU28 Crossed Roller Bearing is designed for precision rotary applications that require high rigidity, accurate positioning and reliable load support. Its crossed cylindrical rollers are arranged alternately at 90 degrees in a V-shaped raceway, enabling the bearing to support radial loads, axial loads and overturning moments simultaneously.

Unlike conventional bearings that may require multiple bearing arrangements to support different load directions, crossed roller bearings can provide multi-directional load support in a compact assembly. This helps simplify machine design and save valuable installation space.

The RU series features an integrated inner and outer ring with mounting holes on both rings. This design simplifies installation and can eliminate the need for a separate mounting flange or housing in suitable applications.

The crossed roller arrangement provides high rigidity and helps maintain stable rotation under combined loading. Spacer retainers separate and guide the rollers, helping reduce friction between adjacent rollers and support consistent rotational torque.

The RU28 is suitable for rotary mechanisms that require controlled movement, stable positioning and repeatable rotational accuracy. Depending on the bearing grade, preload, mounting conditions and lubrication, it can be selected for different precision equipment requirements.

The RU28 can be considered for compact automation equipment, precision rotary stages, measuring instruments, robotic mechanisms and small indexing systems. For demanding applications, the bearing should be selected according to the required load, rotational speed, accuracy and service conditions.

With its integrated structure, multi-directional load capacity and compact design, the RU series is a practical solution for manufacturers developing space-efficient precision rotary systems.