Shaft Diameter 55mm RU85 Crossed Roller Bearing 55X120X15mm Precision Robot Bearing

The RU85 bearing is designed for high-precision rotational motion, featuring crossed cylindrical rollers arranged at right angles to provide exceptional rigidity and load-bearing capacity. Key features include:

• Outer Diameter:120 mm
• Bore Diameter: 55 mm
• Width:15mm
• Structure: Integrated compact design supporting radial, axial, and moment loads in any direction.
• Installation: Simplified by eliminating the need for a mounting flange.

The RU85 bearing excels in applications requiring high performance and reliability, offering superior stiffness and load capacity while simplifying installation.

What's the Performance Features of RU85 Crossed Roller Bearing?

1. High Precision: Achieves P4 and P2 precision levels, ensuring exceptional rotational accuracy and stability.

2. High Rigidity: Features preloaded design to enhance structural stiffness and performance.

3. High Load Capacity: Capable of supporting bi-directional axial loads, radial loads, and tilting moments, making it suitable for complex loading conditions.

4. Compact Design: Its small size helps save valuable space in machine tools without compromising performance.

What's the Applications of the RU85 Crossed Roller Bearing?

The RU85 bearing is a high-precision cross roller bearing, and its design with integral inner and outer rings featuring mounting holes makes it excel in various fields. Its core application areas and typical scenarios as following:

1. Industrial Robots and Automation Equipment

The RU85 cross roller bearing is widely used in the joint and rotary parts of industrial robots. Its high rigidity, high precision, and compact design meet the requirements of small space occupation and high load capacity for robots. For example, in the rotary joints of robotic arms or the rotating mechanisms of chassis, the RU85 bearing provides stable rotational accuracy and resistance to overturning moments, ensuring precise and reliable robot movements.

2. Precision Machine Tools and Processing Equipment

This bearing performs exceptionally well in high-speed machine tools, particularly in vertical lathes, vertical boring machines, precision grinders, and CNC machining centers with rotary tables. Its cross-roller structure can handle multi-directional loads while maintaining high rotational accuracy and low friction, meeting the demands of high-precision workpiece processing. For instance, in spindle or indexing mechanisms of machine tools, the RU85 bearing effectively enhances the rigidity and stability of the equipment.

3. Medical Equipment and Precision Instruments

The RU85 cross roller bearing plays a key role in advanced medical equipment such as CT scanners and MRI machines. Its high cleanliness and low inertia characteristics are ideal for motion support in precision medical instruments. For example, in the rotating mechanisms of medical imaging equipment or the joints of surgical robots, the RU85 ensures stable operation and low-noise performance at high rotational speeds.

4. Optical Equipment and Measurement Systems

This bearing is suitable for rotary table structures in large optical telescopes, LiDAR systems, and precision measurement instruments. Its ultra-thin design and integrated installation holes simplify the assembly process while providing high-precision rotational support. For instance, in optical lens positioning or high-precision measurement and control systems, the RU85 reduces space usage and improves system response speed.

5. New Energy and Special Industrial Applications

In special industrial scenarios such as wind power equipment and welding positioners, the RU85 bearing’s corrosion resistance and high load capacity make it ideal for rotary support components. For example, in the slewing mechanisms of wind turbine pitch systems or the rotating platforms of automated welding equipment, its adjustable preload design ensures long-term stable operation under complex working conditions.

RU Series (Integrated Inner/Outer Ring Type) Crossed Roller Bearing

The RU series bearings feature provided mounting holes, eliminating the need for a presser flange or housing. Additionally, with an integrated inner/outer ring structure and equipped with washers, their performance is minimally impacted by the mounting procedure. This ensures stable rotation accuracy and torque.

This model supports both inner-ring rotation and outer-ring rotation, offering high flexibility and adaptability.

If you need more detailed information , feel free to ask!