RU Series Cross Roller Ring Bearing RU85 Id 55mm Od 120mm Automotive Ball Bearing

RU Crossed Roller Bearing

Crossed Roller Bearings feature cylindrical rollers arranged alternately at right angles between the inner and outer rings. This design allows the bearing to support radial loads, axial loads in both directions, and moment loads simultaneously within a compact structure.

With high rigidity, smooth rotation, and excellent positioning accuracy, Crossed Roller Bearings are ideal for applications requiring precise motion control and space-saving designs. They are widely used in industrial robots, machine tools, precision rotary tables, and automation equipment.

• RU Type features integrated inner and outer rings with mounting holes on both rings. This design eliminates the need for fixing flanges or additional housings, allowing for easy and direct installation.

  Thanks to the one-piece structure of both rings, installation has minimal influence on bearing performance, ensuring stable rotational accuracy and consistent torque. The RU type is suitable for applications requiring high rotational accuracy of both the inner and outer rings.

Key Advantages

• High Rigidity and Compact Design:
  Integrated inner and outer rings with a crossed roller arrangement provide high rigidity and load capacity within a compact structure. Accuracy classes up to P5, P4, and P2 are available.

• Stable and Smooth Rotation:
  The crossed roller design ensures smooth rotation, low friction, and stable torque characteristics under combined loads.

• Easy Installation:
  Mounting holes on both the inner and outer rings eliminate the need for flanges or housings, allowing direct installation with minimal impact on bearing performance.

• High Rotational Accuracy:
  The one-piece ring structure minimizes deformation during mounting, ensuring stable rotational accuracy for both the inner and outer rings.

• All-Direction Load Capacity:
  A single RU bearing can simultaneously support radial, axial, and moment loads, making it ideal for high-precision and high-rigidity applications.

OEM / Customization

This bearing supports OEM services and customization, allowing customers to specify brand labeling, lubrication options, precision tolerances, or packaging according to their requirements. It can be tailored to meet unique operational needs, ensuring optimal performance and full compatibility with customer-specific equipment.

RU Series Crossed Roller Bearing Specifications

RU Series Bearing Mounting Hole Dimensions