THK RB7013UUCC0 Cross Roller Ring
RB7013UUCC0 is a standard‑type crossed roller bearing (Cross‑Roller Ring) from THK’s RB series, designed for inner‑ring rotation with high precision and rigidityTHK. It features a separable outer ring and integrated inner ring, with cylindrical rollers arranged perpendicularly in 90° V‑grooves via a spacer retainer.
RB7013UUCC0 is a standard‑type crossed roller bearing (Cross‑Roller Ring) from THK’s RB series, designed for inner‑ring rotation with high precision and rigidity. It features a separable outer ring and integrated inner ring, with cylindrical rollers arranged perpendicularly in 90° V‑grooves via a spacer retainer. This design enables the bearing to support radial, axial, and moment loads simultaneously in a compact profile. The model is factory‑equipped with double rubber contact seals (UU) and standard internal preload (CC0), ensuring contamination resistance and stable rotational performance.
Official Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Model | RB7013UUCC0 | — |
| Inner Diameter (d) | 70 | mm |
| Outer Diameter (D) | 100 | mm |
| Width (B) | 13 | mm |
| Roller Pitch Circle Diameter (dp) | 84 | mm |
| Minimum Chamfer (rₘᵢₙ) | 0.6 | mm |
| Shaft Fit Diameter (dsₘₐₓ) | 77 | mm |
| Housing Fit Diameter (Dhₘᵢₙ) | 92 | mm |
| Basic Dynamic Load Rating (C) | 19.4 | kN |
| Basic Static Load Rating (C₀) | 27.7 | kN |
| Mass | 0.35 | kg |
| Internal Preload | CC0 | Standard (THK normal preload) |
| Seal Type | UU | Double rubber contact seals (both sides) |
| Retainer | Spacer retainer | Precision roller guidance |
| Lubrication | AFB‑LF Grease | Factory‑filled lithium‑base grease |
| Operating Temperature | -15°C to +80°C | Standard service range |
| Accuracy Class | P0 (PN2) | ISO 492 / ABEC 1 |
Key Design Features (THK Official)
- High Rigidity & Compactness: Crossed roller arrangement delivers 3–4× higher rigidity than conventional double‑row thin angular contact bearings in a slim form factor.
- Multi‑Directional Load Capacity: Single bearing supports radial, axial, and moment loads, simplifying mechanical design.
- Stable Low Torque: Spacer retainers prevent roller skewing and eliminate roller‑to‑roller friction, ensuring consistent, smooth rotation.
- Contamination Protection: UU double seals block dust, chips, and coolant ingress, extending service life in industrial environments.
- Easy Installation: Separable outer ring simplifies mounting; pre‑assembled with rollers and retainer for direct installation.
- Standard Preload (CC0): Factory‑set preload eliminates internal clearance for stable positioning accuracy.
Typical Applications
- Precision rotary tables for machine tools and measuring instruments
- Industrial robot joints and swiveling units
- Semiconductor manufacturing equipment (wafer handling, inspection tools)
- Medical diagnostic and imaging equipment
- Optical positioning systems and precision automation modules
Model Code Explanation (THK Standard)
| Code | Meaning |
|---|---|
| RB | Basic type (separable outer ring, inner‑ring rotation) |
| 70 | Inner diameter = 70 mm |
| 13 | Width = 13 mm |
| UU | Double rubber contact seals (both sides) |
| CC0 | Standard internal preload (THK normal preload) |
