RU Series Crossed Roller Bearings

Features of RU Series Crossed Roller Bearings

1. Multi-Directional Load Capacity

RU series bearings are capable of sustaining radial, axial, and moment loads at the same time due to the orthogonal arrangement of cylindrical rollers. This makes them ideal for applications requiring high rigidity and combined load performance.

2. High Rigidity and Running Accuracy

Thanks to their integrated design and precise manufacturing, RU crossed roller bearings maintain outstanding rotational accuracy even under heavy loads. They are less affected by mounting errors compared to other bearing types. Available precision grades include P5, P4, P2, and even ultra-high precision USP grade.

3. Space-Saving Design

As a face-mount type crossed roller bearing, the RU series features built-in mounting holes, allowing it to be bolted directly onto equipment without the need for separate housing or fixing plates. This integrated design reduces system size and simplifies installation.

4. Customization Available

In addition to standard models, custom-designed RU crossed roller bearings can be manufactured to meet specific size, load, or performance requirements for specialized applications.

Applications of RU Series Crossed Roller Bearings

RU series bearings are widely used in high-precision and space-limited environments, such as:

• Joint units of industrial and collaborative robots
• Precision rotary tables and indexing devices
• Hollow rotary actuators and platforms
• Radar systems and surveillance equipment
• Precision measuring instruments and metrology systems

Mounting and Rotation Characteristics

RU crossed roller rings come with pre-machined mounting holes, allowing direct mounting to machinery. They are suitable for both inner ring and outer ring rotation, enhancing design flexibility in rotary mechanisms.

Size Range

• Inner Diameter (ID): 10 mm – 350 mm
• Outer Diameter (OD): 50 mm – 540 mm

Summary of Key Features

• Integrated mounting holes for direct installation
• Supports radial, axial, and moment loads
• High precision grades: P5 / P4 / P2 / USP
• Compact and space-saving structure
• Suited for rotating inner or outer ring

Conclusion

RU Series Crossed Roller Bearings combine compactness, high rigidity, and multi-directional load support in a single unit. With their pre-drilled mounting holes and high precision, they provide a simplified, yet powerful solution for advanced automation, robotics, and metrology systems. For applications demanding both accuracy and space efficiency, RU series bearings are a highly reliable choice.