THK RU28 Precision Crossed Roller Bearing 15x70x12mm for CNC Rotary Table & Robotics
The RU28 Crossed Roller Bearing is a high-precision, integrated-ring solution designed for compact motion control. By using pre-drilled mounting holes, it eliminates the need for complex housings, increasing system rigidity while simplifying your assembly process.
- Integrated Mounting: Bolt-on design requires no housing or pressure plates.
- High Precision: P2/P4 runout accuracy for precise positioning.
- Multi-Load Support: Handles radial, axial, and moment loads simultaneously.
- Compact Profile: Slim 12mm width saves critical installation space.
- Zero-Backlash: Optimized for high-rigidity and play-free rotation.
| Feature | Details |
|---|---|
| Model | RU28 (Integrated Type) |
| Dimensions | 15mm (ID) × 70mm (OD) × 12mm (W) |
| Precision | P5 / P4 / P2 / P0 |
| Mounting | Integrated Inner/Outer Ring Holes |
| Material | High-Carbon Chromium Bearing Steel (GCr15) |
- CNC Machine Tools: 4th/5th axis units and precision indexing tables.
- Industrial Robotics: Cobot joints and robotic swiveling bases.
- Medical Devices: Surgical robot arms and dental milling equipment.
- Precision Optics: Laser tracking systems and gimbal mounts.
| 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 |
- Simplified Assembly: Reduce components and installation time with our integrated design.
- Extreme Rigidity: Superior resistance to tilting moments compared to ball bearings.
- Custom Preload: Tailored settings to ensure zero-play performance for CNC tasks.
- Certified Quality: 100% vibration and noise testing for guaranteed reliability.
No. Its integrated mounting holes allow it to be bolted directly to your machine, simplifying your overall design.
2. What makes RU28 better than the SX series for small setups?Convenience. It is a one-piece unit that provides higher structural integrity and is much easier to mount in tight spaces.
3. Do you provide 3D CAD files?Yes. GQZ provides STEP and IGES files to help engineers quickly integrate the RU28 into their digital designs.
Boost your machine's accuracy with the GQZ RU28. Contact our engineering team for technical data and a fast-track quote.
Contact us today for pricing, customization, or technical support!
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