IKO CRBF108ATUUT1 Cross Roller Bearing
CRBF108ATUUT1 is a compact, high‑rigidity crossed roller bearing from IKO’s CRBF series, featuring cylindrical rollers arranged alternately at 90° between precision‑ground inner and outer rings. It supports radial, axial, and moment loads simultaneously in a single unit.
CRBF108ATUUT1 is a compact, high‑rigidity crossed roller bearing from IKO’s CRBF series, featuring cylindrical rollers arranged alternately at 90° between precision‑ground inner and outer rings. It supports radial, axial, and moment loads simultaneously in a single unit. This model is factory‑equipped with double rubber contact seals (UU), a precision roller separator (T), and T1 axial internal clearance, delivering stable rotational accuracy and contamination resistance for precision motion applications.
Official Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Model | CRBF108ATUUT1 | — |
| Inner Diameter (d) | 10 | mm |
| Outer Diameter (D) | 52 | mm |
| Width (B) | 8 | mm |
| Minimum Chamfer (r₁ₘᵢₙ / r₂ₘᵢₙ) | 0.3 | mm |
| Basic Dynamic Load Rating (C) | 2,910 | N |
| Basic Static Load Rating (C₀) | 2,430 | N |
| Mass | 0.12 | kg (0.26 lbs) |
| Seal Type | UU | Double rubber contact seals (both sides) |
| Internal Clearance | T1 | Axial internal clearance |
| Retainer | Precision separator | Roller guidance |
| Material | High‑carbon chromium bearing steel (SUJ2) | — |
| Operating Temperature | -20°C to +110°C | Standard service range |
| Accuracy Class | JIS Class 0 (P0) | ISO 492 / ABEC 1 |
| Lubrication | Factory‑filled lithium‑base grease | Non‑relubricatable |
| Inner Ring Mounting | 4‑M3 threaded holes | — |
| Inner Ring PCD (PCD1) | 16 | mm |
| Outer Ring Mounting | 6‑φ3.4 through holes, φ6.5 counterbore (depth 3.3) | — |
| Outer Ring PCD (PCD2) | 42 | mm |
Key Design Features
- Mounting‑Holed Structure: Integrated inner/outer rings with pre‑drilled mounting holes simplify installation and eliminate additional flanges.
- 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, extending service life in industrial environments.
- Precision Clearance (T1): Factory‑set axial internal clearance ensures stable rotational accuracy.
- Pre‑Assembled: Ready‑to‑install with rollers and separators pre‑assembled for easy mounting.
Typical Applications
- Industrial robot joints and small rotary actuators
- Precision indexing tables and rotary stages
- Semiconductor manufacturing equipment
- Medical diagnostic and imaging devices
- Optical positioning systems and measuring instruments
- High‑precision automation modules
Model Code Explanation (IKO Standard)
| Code | Meaning |
|---|---|
| CRBF | Mounting‑holed high rigidity crossed roller bearing |
| 10 | Inner diameter = 10 mm |
| 8 | Width = 8 mm |
| A | Standard mounting‑holed type |
| T | Precision roller separator |
| UU | Double rubber contact seals (both sides) |
| T1 | Axial internal clearance specification |
