115mm Shaft Bore RU178 Crossed Roller Bearing with High Rigidity and Compact Design for Precision Robotics

The RU178 bearing is designed for high-precision rotational motion, featuring crossed cylindrical rollers arranged at right angles to provide exceptional rigidity and load-bearing capacity.

• Outer Diameter: 240 mm
• Bore Diameter: 115 mm
• Width: 28 mm
• Structure: Integrated compact design supporting radial, axial, and moment loads in any direction
• Installation: Simplified by eliminating the need for a mounting flange

The RU178 bearing excels in applications requiring high performance and reliability, offering superior stiffness and load capacity while simplifying installation.

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

The RU178 bearing, as a high-precision crossed roller bearing, is widely used in various fields due to its compact design, high rigidity, and composite load-carrying capacity:

• Robotic Arm Joints: Used in rotary joints of industrial robots, withstanding multi-directional loads while providing stable motion
• AGV/Service Robots: Supports precision rotary components in automated equipment, such as hollow rotary platforms and robotic arm bases

• CNC Machine Tool Rotary Tables: Acts as a core component of machining center rotary tables, ensuring high-precision indexing and cutting stability
• Laser Equipment/Optical Instruments: Used in rotary discs of laser cutting machines and precision positioning systems for optical inspection equipment

• Medical Imaging Equipment: Such as CT/MRI rotary supports, meeting low-noise and high-reliability requirements
• Laboratory Equipment: Applied in rotating mechanisms of centrifuges and precision microscopes

• Satellite Pointing Systems: Supports stable rotation of spacecraft payload orientation mechanisms
• Radar Antenna Bases: Used in 360° rotational drive systems for ground-based or shipborne radars

• Wind Turbine Pitch Systems: Acts as a supplementary component to yaw bearings, enhancing resistance to overturning forces

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!