CRBH Series Crossed Roller Bearings (Ultra-thin-wall type; integrated inner and outer rings; outer ring with plug)

1. General Information

Interchangeability: Can serve as a direct replacement for the IKO CRBH series crossed roller bearings.

Structural features: Adopts an ultra-thin design with one-piece inner and outer rings without mounting holes, requiring fixation via flanges and support housings during installation. The outer ring includes a plug. Rollers are arranged in a crossed configuration with spacers (cages) between them and feature an optimized profile design.

Suitable applications: Ideal for applications requiring rotation of both inner and outer rings with compact dimensions, as well as scenarios demanding high rotational accuracy for both rings. Meets requirements for high rigidity, high precision, and heavy load capacity.

2. Key Features

• High rigidity and high precision: The crossed arrangement of rollers enables the bearing to simultaneously handle radial loads, axial loads, and overturning moments, delivering exceptionally high rigidity and rotational accuracy.

• Compact design: The compact structure is smaller and lighter than conventional bearings, helping reduce equipment size and weight.

• High load capacity: The design effectively distributes loads, allowing the bearing to withstand significant radial, axial, and tilting loads, making it suitable for high-load applications.

• Low friction coefficient: Proper design and material selection reduce the friction coefficient, minimizing heat generation, improving operating efficiency, and extending service life.

• Long service life: The optimized roller profile and use of spacers reduce friction and wear between rollers, prolonging bearing life.

• Easy installation: The integrated design streamlines the installation process, enabling faster and more convenient setup.

3. Application Fields

• Robotics: Robotic arms, joints, etc.

• Medical equipment: CT scanners, MRI machines, etc.

• Precision equipment: Precision measuring instruments, optical scanning devices, etc.

• Industrial automation: Rotary tables, machining centers, etc.

4. Installation Steps

• Clean mounting surfaces: Before installation, ensure bearing mounting surfaces (including the shaft and housing bore) are clean and free of oil, dirt, and contaminants. Use an appropriate cleaning agent to clean all contact surfaces.

• Inspect component dimensions and fit: Check the dimensional accuracy and form accuracy of the shaft and housing bore to ensure the fit with the bearing meets design specifications.

• Install the bearing:
  Gently position the bearing onto the shaft or into the housing bore. Avoid striking directly with a hammer. If force is required, use a bearing mounting sleeve to apply force evenly to the inner or outer ring.
  For CRBH series bearings with mounting holes, secure them in the designated position using screws through the mounting holes, ensuring the screw tightening torque meets the manufacturer's recommended values.

• Inspect the installed bearing: After installation, check that the bearing rotates smoothly without abnormal noise or resistance, and confirm correct installation with no misalignment or tilting.

• Lubrication: Apply an appropriate amount of lubricant according to the application requirements and manufacturer recommendations. Pre-lubricated bearings may not require additional lubrication.

5. Precautions

• Installation environment: Installation must be carried out in a clean, dust-free environment to prevent foreign matter from entering the bearing.

• Installation tools: Use dedicated tools to avoid damaging the bearing due to improper tools.

• Force application: The force applied during installation must be uniform to prevent localized pressure on the bearing.

• Inspection: Perform functional and rotational checks after installation to ensure correct mounting and smooth bearing operation.

Proper installation of CRBH series crossed roller bearings is essential to ensuring their performance and extending their service life.