CRBT305-41A 30X41X5mm Thin Wall Crossed Roller Bearing Robot Miniature

Product Specification

CRBTF305A 30X63X5mm Thin Wall Crossed Roller Bearing Compact Hand Robot Joint Bearing

CRBT305-41A 30X41X5mm Thin Wall Crossed Roller Bearing Miniature Manipulator Surveillance Camera Bearings

The CRBTF305-41A 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:41 mm
• Bore Diameter: 30 mm
• Width:5 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 CRBT305-41A bearing excels in applications requiring high performance and reliability, offering superior stiffness and load capacity while simplifying installation.

What's the Performance Features of CRBT305-41A Crossed Roller Bearing?

CRBT305-41A is a thin-walled cross roller bearing, primarily used in industrial scenarios that demand high precision and lightweight design.

• Lightweight Design: Compared to traditional models, its weight is reduced by approximately 62%, with a cross-section height of only 5 mm, making it suitable for compact space applications.
• High Rigidity: The cross-roller structure can withstand axial, radial, and overturning moment loads, offering 3-4 times higher rigidity than traditional bearings.
• High Precision: The precision grade can reach P2/P4/P5 levels, making it ideal for precision equipment such as robotic joints, medical instruments, and more.

What's the Applications of the CRBT305-41A​ Crossed Roller Bearing?

The CRBT305A cross roller bearing, with its compact design (inner diameter 30mm × outer diameter 41mm × thickness 5mm), high rigidity, and high load capacity, is primarily used in the following fields:

1. Industrial Robots

• Joint Components: Used in the rotary joints of collaborative robots, humanoid robots, and robotic arms, providing high-precision positioning and low-friction operation while ensuring stable repetitive motion .
• End Effectors: Suitable for welding, handling, and other applications, meeting lightweight and miniaturization requirements .

2. Precision Machine Tools and Processing Equipment

• CNC Rotary Tables: Used in five-axis machining centers and mill-turn composite machines, ensuring precise indexing and rigid support .
• Grinding Machines and Testing Equipment: Such as universal testing machines and compression testing machines, ensuring balanced loads during processing or testing.

3. Medical and Laboratory Equipment

• Imaging Equipment: Used in rotating components of CT scanners and optical inspection instruments, meeting low-noise and high-speed requirements .
• Reverse Osmosis Systems: Applied in precision transmission components of liquid handling systems.

4. Automation and Specialized Equipment

• Semiconductor Manufacturing: Used in precision motion control modules of lithography machines and wafer cutting machines 
• Radar and Communication Equipment: Supports smooth rotation of pan-tilt units, antennas, and similar components .
• Drones and Robotic Joints: Suitable for lightweight designs, such as drone gimbal stabilization systems.

5. General Industrial Applications

• Textile Machinery: Used in transmission components of textile equipment and looms .
• Chemical and Environmental Equipment: Applied in corrosive environments such as chemical pumps, vibrating screens, and sludge scrapers.

Key Features and Suitability

• Lightweight Design: Ultra-thin profile (only 5mm thick) makes it ideal for space-constrained applications.
• Composite Load Capacity: Capable of simultaneously withstanding radial, axial loads, and overturning moments, making it suitable for complex working conditions.

CRB Series (Integrated Inner/Outer Ring Type) Crossed Roller Bearing

I. Structural Characteristics

Split Outer Ring and Integral Inner Ring Design

• The outer ring is divided into two parts, while the inner ring is a single-piece structure, facilitating installation and clearance adjustment.
• Features an equal cross-section thin-walled design, with both inner and outer ring thickness minimized to suit compact space applications.

Rolling Element Arrangement

• Cylindrical rollers are arranged in a 90° cross pattern, with spacers maintaining their spacing to prevent friction and locking phenomena.

II. Performance Advantages

High Load-Carrying Capacity

• Capable of simultaneously withstanding radial, axial loads, and overturning moments, making it suitable for heavy-load applications (e.g., cranes, construction machinery).

High Rigidity and Precision

• Offers 3-4 times higher rigidity than traditional bearings, with rotational accuracy reaching P4 and P2 levels, ideal for precision equipment (e.g., CNC machine tools, medical instruments).

Lightweight and Compactness

• Extremely thin walls and reduced weight make it suitable for weight-sensitive applications such as robotic joints and manipulators.

High-Speed Performance

• Low-friction design supports high-speed rotation (e.g., DD motors, high-speed indexing tables).

III. Typical Application Scenarios

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