Crossed Roller Bearing RA7008UUCC0 70X86X8mm Block Linear Guide Slide RA7008C Cross-Roller Ring Thin Wall Crossed Roller Bearing Compact Hand Robot Joint Bearing

The RA7008C RA7008UUCC0 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:86 mm
• Bore Diameter: 70 mm
• Width:8 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 RA7008C RA7008UUCC0 bearing excels in applications requiring high performance and reliability, offering superior stiffness and load capacity while simplifying installation.

What's the Performance Features of RA7008C RA7008UUCC0 Crossed Roller Bearing?

RA7008UUCC0 is a thin-walled cross roller bearing, primarily used in industrial scenarios that demand high precision and lightweight design.

1. High Rigidity

• Provides 3-4 times more rigidity than traditional bearings, supporting loads in all directions (radial, axial, and moment loads).

2. Compact Design

• Extremely thin profile (only 8mm thick), making it perfect for tight spaces.

3. High Precision

• Offers micron-level accuracy with pre-load adjustment to ensure stable rotation.

4. Versatile Load Capacity

• Can handle radial, axial, and moment loads simultaneously thanks to its crossed roller design where rollers are arranged perpendicularly and separated by spacers.

5. Low Friction and Long Life

• Reduced friction between rollers extends maintenance intervals and increases durability.

What's the Applications of the RA7008C RA7008UUCC0​ Crossed Roller Bearing?

1. Industrial Robots and Manipulators

• Robot Joints and Rotating Arms

• The thin-wall design of the RA7008UUCC0 (with the inner and outer ring thickness reduced to the limit) makes it an ideal choice for space-constrained areas such as robot joints and rotating arms.

• Its single-split outer ring structure allows for outer ring rotation, making it suitable for applications requiring high rotational accuracy .

• Rotating Parts of Manipulators

• The crossed roller arrangement can withstand loads from multiple directions, meeting the demands of frequent starts/stops and high loads in manipulators .

2. Precision Machining and Measurement Equipment

• Rotary Tables of Machining Centers

• High rigidity (3-4 times higher than traditional bearings) and low-friction characteristics ensure smooth operation of the rotary table .

• Measurement Instruments and Inspection Equipment

• Micron-level rotational accuracy (e.g., P5 grade precision) makes it suitable for high-precision inspection instruments and metrology tools .

3. Medical and Semiconductor Equipment

• Medical Robots and Surgical Equipment

• Low torque and high cleanliness meet the requirements of medical environments and are suitable for minimally invasive surgical robots.

• Semiconductor Manufacturing Equipment

• High-temperature resistant materials (such as carburized steel) and non-magnetic designs meet the cleanliness and stability requirements of semiconductor equipment.

4. Aerospace and Automation Systems

• Direct Drive Torque Motors

• Lightweight design (single unit weight approximately 0.08 kg) and high rigidity make it suitable for precision transmission systems in aerospace .

• Automated Production Lines

• Long service life and high reliability support continuous high-speed operation in automated production lines.

5. Other Applications

• IC Manufacturing Equipment: Sealed structure (CC0 clearance design) prevents dust contamination .

• Vacuum/High-Temperature Environments: Special lubrication solutions adapt to extreme working conditions .

RA-C Series Crossed Roller Bearing

The RA C Series Cross Roller Bearings are compact bearings specifically designed for high-precision and high-rigidity applications. Their core features and application scenarios are as follows:

1. Structural Features

Integrated Inner and Outer Rings

The RA C Series adopts an integrated inner and outer ring structure, with the outer ring featuring a crack design (notched structure). This design maintains high rigidity while allowing the outer ring to rotate, making it suitable for applications where the outer ring needs to move .

Ultra-Thin Section and Compact Size

This series achieves an ultra-thin section . It is particularly ideal for applications with limited installation space, such as industrial robot joints and rotating components of robotic arms.

Composite Load Capacity

The rollers are arranged in a 90° cross pattern, allowing a single bearing to handle radial loads, axial loads, and overturning moments, replacing traditional multi-bearing combinations .

2. Application Areas

Industrial Robots

Used in robotic arm joints and rotating components, meeting the demands for high-speed motion and precision due to their high rigidity and low friction characteristics .

CNC Machines and Machining Centers

Suitable for rotary tables and precision indexing tables, providing stable rotational accuracy and shock resistance.

Medical Equipment and Precision Instruments

Its high-precision characteristics make it the preferred choice for fields such as surgical robots and optical instruments .

3. Advantages and Performance

High Rigidity and Load Capacity

The integrated inner and outer ring structure enhances anti-overturning capability, enabling the bearing to withstand complex loads and making it suitable for heavy machinery and high-dynamic load scenarios.

Low Friction and Long Service Life

Rollers are separated by spacers to prevent tilting and friction, reducing rotational torque and extending lubrication intervals.

Preload Adjustment Flexibility

Supports preload adjustment to optimize rotational accuracy and stability, adapting to various operating conditions.

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