High Precision Robot Bearing THK RUA4005 Thin Section Crossed Roller Bearing 40×51×5 mm
High Precision Robot Bearing THK RUA4005 Thin Section Crossed Roller Bearing 40*51*5 mm
The RUA4005 Thin Section Crossed Roller Bearing is a high-precision, compact bearing designed for robot arms, automation systems, and precision machinery. With dimensions of 40mm ID * 51mm OD * 5mm width, it offers an ideal balance of space-saving design, high rigidity, and smooth rotation performance.
Using a crossed cylindrical roller structure, the RUA4005 can simultaneously support radial, axial, and moment loads, making it highly suitable for robot joints and high-precision motion control systems. This model is interchangeable with CRBT405 and similar international standards, providing a cost-effective factory-direct solution.
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Ultra-Thin Design (40*51*5 mm)
Perfect for compact robotic structures and limited installation space -
High Load Capacity
Supports multi-directional loads in a single bearing -
High Precision & Rigidity
Ideal for robot arms and precision positioning systems -
Smooth Rotation & Low Noise
Ensures stable and reliable operation -
Integrated Inner & Outer Ring
Simplifies installation and improves assembly accuracy -
CRBT405 Replacement
Fully interchangeable with standard models
| Parameter | Value |
|---|---|
| Model | RUA4005 |
| Equivalent Model | CRBT405 |
| Type | Thin Section Crossed Roller Bearing |
| Inner Diameter (ID) | 40 mm |
| Outer Diameter (OD) | 51 mm |
| Width | 5 mm |
| Material | GCr15 Chrome Steel |
| Accuracy Grade | P5 / P4 (Optional) |
| Structure | Integrated Inner & Outer Ring |
| Roller Type | Crossed Cylindrical Rollers |
The RUA4005 crossed roller bearing is widely used in:
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Robot arms and robotic joints
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Industrial automation equipment
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CNC rotary tables
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Semiconductor manufacturing equipment
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Medical devices
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Precision measuring instruments
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
Yes, the RUA4005 is fully interchangeable with CRBT405, matching key dimensions and performance.
It is widely used in robotics, automation, CNC machinery, and precision equipment requiring compact high-rigidity bearings.
Yes, we provide custom preload, lubrication, sealing options, and special materials based on your application needs.
Looking for a reliable RUA4005 crossed roller bearing supplier?
Contact us now to get:
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Competitive factory price
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Technical drawings
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Bulk order support
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.