THK RAU2005 Thin Cross Roller Bearing 20mm 31mm × 5mm Precision Bearing for Humanoid Robot Arms
THK RAU2005 Thin Cross Roller Bearing 20mm 31mm * 5mm Precision Bearing for Humanoid Robot Arms
Product Overview
The RAU2005 Thin Cross Roller Bearing is a compact, ultra-slim precision bearing designed for high-load, high-accuracy applications in modern automation systems. With dimensions of 20mm ID * 31mm OD * 5mm width, this bearing is ideal for humanoid robot arms, compact rotary mechanisms, and precision motion control systems.
Built with a crossed roller structure, the RAU2005 allows rollers to be arranged orthogonally, enabling the bearing to withstand radial loads, axial loads, and moment loads simultaneously. It is widely used as a reliable alternative to models such as THK RAU2005, offering excellent performance with competitive pricing.
Key Features
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Ultra-Thin Metric Design (20*31*5 mm)
Perfect for space-constrained robotic and automation systems -
High Rigidity & Load Capacity
Handles multi-directional loads in a single bearing -
Precision Rotation Performance
Ideal for high-accuracy positioning in robot joints -
Low Friction & Smooth Motion
Ensures stable and quiet operation -
Integrated Structure
Simplifies installation and reduces assembly errors -
Interchangeable with THK RAU2005
Compatible replacement with cost-effective advantage
Technical Specifications
| Parameter | Value |
|---|---|
| Model | RAU2005 |
| Type | Thin Crossed Roller Bearing |
| Inner Diameter (ID) | 20 mm |
| Outer Diameter (OD) | 31 mm |
| Width | 5 mm |
| Material | GCr15 Bearing Steel |
| Accuracy Grade | P5 / P4 (Optional) |
| Structure | Integrated Inner & Outer Ring |
| Roller Type | Cylindrical Rollers (Crossed Arrangement) |
Applications
This RAU2005 thin crossed roller bearing is widely used in:
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Humanoid robot arms & joints
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Industrial robots and cobots
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Precision automation equipment
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CNC rotary tables
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Medical robotic systems
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Semiconductor machinery
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Optical and inspection instruments
We aslo supply following bearings:
Related Models (Thin Crossed Roller Bearing Series)
| THK Model | d | D | B | Dpw | ds | Dh | C | Co | Kg |
|---|---|---|---|---|---|---|---|---|---|
| FRAU20055 | 20 | 31 | 5 | 25.5 | 22.5 | 27 | 1.4 | 1.29 | 0.014 |
| FRAU30055 | 30 | 41 | 5 | 35.5 | 32.5 | 37 | 1.777 | 1.997 | 0.022 |
| FRAU40055 | 40 | 51 | 5 | 45.5 | 42.5 | 47 | 2 | 2.552 | 0.022 |
| FRAU50055 | 50 | 61 | 5 | 55.5 | 52.5 | 57 | 2.228 | 3.22 | 0.0322 |
Why Choose GQZ Bearing?
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High Precision (P5/P4) – Stable performance for robotics
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Cost-Effective Replacement – Compatible with THK RAU series
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Fast Delivery – Reliable supply for global orders
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Custom Solutions – OEM & application-based design support
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Strict Quality Control – ISO9001, full inspection before shipment
FAQ
1. Is RAU2005 interchangeable with THK RAU2005?
Yes, our RAU2005 bearing is fully interchangeable with THK RAU2005, with matching dimensions and performance.
2. What applications is RAU2005 suitable for?
RAU2005 is widely used in humanoid robot arms, industrial robots, precision rotary tables, and automation equipment requiring high rigidity and accuracy.
3. Can you provide customization for this bearing?
Yes, we support custom preload, lubrication, sealing, and special materials based on your application requirements.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.