RA

Key Features of RA Series Crossed Roller Bearings

1. Simultaneous Multi-Directional Load Support

RA series crossed roller bearings are engineered to support radial, axial, and moment loads simultaneously, making them suitable for dynamic environments and high-performance automation systems.

2. Ultra-Thin & Lightweight Structure

Designed with an exceptionally thin cross-section, RA bearings are significantly lighter than standard crossed roller bearings. This makes them perfect for applications where reducing weight is essential without sacrificing load capacity or accuracy.

3. High Rigidity and Running Accuracy

Despite their slim profile, RA bearings provide excellent rigidity and rotational accuracy. The optimized internal structure reduces deformation under load and enables precise motion control, even in high-speed operations.

4. Integrated Inner Ring & Separable Outer Ring

The RA series adopts a structure similar to the RB series, featuring an integrated inner ring and a separable outer ring. This design supports stable inner ring rotation and simplifies installation while maintaining high positional precision.

Technical Specifications

• Design: Thin-section, lightweight structure with high stiffness
• Rotation: Suited for applications where the inner ring rotates
• Ring Structure: Integrated inner ring, separable outer ring
• Size Range:
  • Inner Diameter (ID): 50 mm – 200 mm
  • Outer Diameter (OD): 66 mm – 226 mm

Typical Applications

RA series crossed roller bearings are widely used in fields that demand compact design, lightweight components, and precision movement, including:

• Industrial robot arms and joints
• Manipulator rotary units
• Medical imaging and surgical equipment
• Precision measuring instruments
• Semiconductor and electronics manufacturing equipment

Conclusion

With their ultra-thin construction, superior load handling, and high rotational accuracy, RA Series Thin-Section Crossed Roller Bearings provide a reliable and space-efficient solution for advanced industrial and medical applications. Their ability to deliver performance in compact, lightweight designs makes them a preferred choice for engineers and system designers seeking efficiency without compromise.