High Accuracy Bearing RU148G Ultra Precision Cross Roller Bearing 90x210x25mm for Robot Joints & Harmonic Drives
The RU148G Cross Roller Bearing is a high-precision upgraded version designed for applications requiring superior accuracy, smooth rotation, and minimal runout. With dimensions of 90mm inner diameter, 210mm outer diameter, and 25mm width, it is ideal for advanced robotics, harmonic drives, and precision automation systems.
Compared with the standard model, RU148G offers tighter tolerances, improved rotational consistency, and enhanced motion stability, making it suitable for high-end equipment where precision is critical.
- Model: RU148G
- Size: 90x210x25mm
- High precision grade with reduced runout
- Smooth and stable rotation
- Ideal for precision robotics and reducers
- Ultra High Precision: Tight tolerances ensure accurate and repeatable motion.
- Low Runout Performance: Improved machining quality reduces vibration and deviation.
- High Rigidity: Crossed roller structure provides strong stiffness under load.
- Smooth Operation: Optimized raceway finishing ensures low friction rotation.
- Integrated Design: Simplifies installation and enhances structural stability.
- Extended Durability: Heat-treated bearing steel for long service life.
| Parameter | RU148G |
|---|---|
| Model | RU148G |
| Inner Diameter (ID) | 90 mm |
| Outer Diameter (OD) | 210 mm |
| Width (H) | 25 mm |
| Type | Cross Roller Bearing |
| Structure | Integrated Inner & Outer Ring |
| Material | Bearing Steel (GCR15) |
| Preload | C0 / Precision Preload Optional |
| Accuracy Class | P5 / Higher optional |
| Application | Precision Robotics, Harmonic Drives, Automation Systems |
- High-End Industrial Robots – Ensures precise joint movement and repeatability.
- Harmonic Drive Systems – Provides stable and accurate transmission.
- Collaborative Robots (Cobot) – Smooth and controlled motion performance.
- Precision Automation Equipment – Suitable for high-accuracy positioning systems.
| Model | d | D | B | C | Co | kg |
|---|---|---|---|---|---|---|
| RU28 | 10 | 52 | 8 | 2.91 | 2.43 | 0.12 |
| RU42 | 20 | 70 | 12 | 7.35 | 8.35 | 0.29 |
| - | 25 | 80 | 12 | 8.61 | 10.6 | 0.4 |
| RU66 | 35 | 95 | 15 | 17.5 | 22.3 | 0.66 |
| RU85 | 55 | 120 | 15 | 20.3 | 29.5 | 1 |
| RU124 | 80 | 165 | 22 | 33.1 | 50.9 | 2.6 |
| RU124G | 80 | 165 | 22 | 33.1 | 50.9 | 2.6 |
| RU124X | 80 | 165 | 22 | 33.1 | 50.9 | 2.6 |
| RU148 | 90 | 210 | 25 | 49.1 | 76.8 | 4.9 |
| RU148G | 90 | 210 | 25 | 49.1 | 76.8 | 4.9 |
| RU148X | 90 | 210 | 25 | 49.1 | 76.8 | 4.9 |
| RU178 | 115 | 240 | 28 | 80.3 | 135 | 6.8 |
| RU178G | 115 | 240 | 28 | 80.3 | 135 | 6.8 |
| RU178X | 115 | 240 | 28 | 80.3 | 135 | 6.8 |
| RU228 | 160 | 295 | 35 | 104 | 173 | 11.4 |
| RU228G | 160 | 295 | 35 | 104 | 173 | 11.4 |
| RU228X | 160 | 295 | 35 | 104 | 173 | 11.4 |
| RU297 | 210 | 380 | 40 | 156 | 281 | 21.3 |
| RU297G | 210 | 380 | 40 | 156 | 281 | 21.3 |
| RU297X | 210 | 380 | 40 | 156 | 281 | 21.3 |
| RU445 | 350 | 540 | 45 | 222 | 473 | 35.4 |
| RU445G | 350 | 540 | 45 | 222 | 473 | 35.4 |
| RU445X | 350 | 540 | 45 | 222 | 473 | 35.4 |
- Precision Advantage: Optimized for high-accuracy applications.
- Consistent Quality: Strict inspection ensures stable performance.
- Fast Delivery: Reliable production with global logistics.
- Customization Available: Tailored precision levels and preload options.
A1: It indicates a higher precision grade with improved accuracy, lower runout, and smoother rotation.
A2: Yes, it is specifically designed for applications requiring high positioning accuracy and stability.
A3: Yes, we offer customized precision grades beyond standard P5 upon request.
Achieve superior motion accuracy with RU148G Cross Roller Bearing.
Contact us today for pricing, customization, or technical consultation!
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