IKO CRBF2512ATUUC1 Cross Roller Bearing
CRBF2512ATUUC1 is a high‑rigidity, mounting‑holed crossed roller bearing from IKO’s CRBF series. It features cylindrical rollers alternately crossed at 90° between precision‑ground inner and outer rings, guided by a precision separator. This design enables the bearing to support radial, axial, and moment loads simultaneously in a compact profile.
CRBF2512ATUUC1 is a high‑rigidity, mounting‑holed crossed roller bearing from IKO’s CRBF series. It features cylindrical rollers alternately crossed at 90° between precision‑ground inner and outer rings, guided by a precision separator. This design enables the bearing to support radial, axial, and moment loads simultaneously in a compact profile. The unit is factory‑equipped with double rubber contact seals (UU) and C1 axial internal clearance, delivering high rotational accuracy, rigidity, and contamination resistance for precision motion applications.
Official Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Model | CRBF2512ATUUC1 | — |
| Inner Diameter (d) | 25 | mm |
| Outer Diameter (D) | 80 | mm |
| Width (B) | 12 | mm |
| Minimum Chamfer (r₁ₘᵢₙ / r₂ₘᵢₙ) | 0.6 | mm |
| Basic Dynamic Load Rating (C) | 8,610 | N |
| Basic Static Load Rating (C₀) | 10,600 | N |
| Mass | 0.40 | kg (0.88 lbs) |
| Seal Type | UU | Double rubber contact seals (both sides) |
| Internal Clearance | C1 | Axial internal clearance |
| Retainer | Precision separator | Roller guidance |
| Material | High‑carbon chromium bearing steel (SUJ2) | — |
| Operating Temperature | -20°C to +110°C | Standard service rangeIKO |
| Accuracy Class | JIS Class 0 (P0) | ISO 492 / ABEC 1 |
| Lubrication | Factory‑filled lithium‑base grease | Non‑relubricatable |
| Inner Ring Mounting | 6‑M4 threaded holes | — |
| Inner Ring PCD (PCD1) | 35 | mm |
| Outer Ring Mounting | 6‑φ4.5 through holes, φ8 counterbore (depth 4.4) | — |
| Outer Ring PCD (PCD2) | 70 | mm |
Key Design Features
- Mounting‑Holed Structure: Integrated inner/outer rings with pre‑drilled mounting holes simplify installation and eliminate the need for additional flangesIKO.
- High Rigidity: Crossed roller arrangement provides exceptional rigidity and minimal elastic deformation under combined loads.
- Multi‑Directional Load Capacity: Single bearing supports radial, axial, and moment loads, reducing system complexity.
- Sealed Construction: UU double seals prevent contamination ingress and retain lubrication, extending service lifeIKO.
- Precision Clearance (C1): Factory‑set axial internal clearance ensures stable rotational accuracy and performance.
- Pre‑Assembled: Ready‑to‑install with rollers and separators pre‑assembled for easy mounting.
- Low Torque: Small difference between static and dynamic torque, enabling lower power consumption and reduced temperature riseIKO.
Typical Applications
- Industrial robot joints and rotary actuators
- Precision rotary tables for machine tools
- Semiconductor manufacturing equipment
- Medical diagnostic and imaging devices
- Optical positioning systems and measuring instruments
- High‑precision indexing tables and automation modules
Model Code Explanation (IKO Standard)
| Code | Meaning |
|---|---|
| CRBF | Mounting‑holed high rigidity crossed roller bearing |
| 25 | Inner diameter = 25 mm |
| 12 | Width = 12 mm |
| A | Standard mounting‑holed type |
| T | Precision roller separator |
| UU | Double rubber contact seals (both sides) |
| C1 | Axial internal clearance specification |
