IKO CRBS608AUUT1 Slim Cross Roller Bearing
CRBS608AUUT1 is an ultra‑slim, high‑rigidity crossed roller bearing from IKO’s CRBS series. It features cylindrical rollers alternately arranged at 90° between precision‑ground inner and outer rings, guided by a precision separator retainer. This design enables the bearing to support radial, axial, and moment loads simultaneously in an extremely compact form factor.
CRBS608AUUT1 is an ultra‑slim, high‑rigidity crossed roller bearing from IKO’s CRBS series. It features cylindrical rollers alternately arranged at 90° between precision‑ground inner and outer rings, guided by a precision separator retainer. This design enables the bearing to support radial, axial, and moment loads simultaneously in an extremely compact form factor. The unit is factory‑equipped with double rubber contact seals (UU), separator‑type retainer (A), and T1 axial internal clearance, delivering high rotational accuracy, rigidity, and contamination resistance for space‑constrained precision applications.
Official Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Model | CRBS608AUUT1 | — |
| Inner Diameter (d) | 60 | mm |
| Outer Diameter (D) | 76 | mm |
| Width (B) | 8 | mm |
| Minimum Chamfer (rₘᵢₙ) | 0.4 | mm |
| Basic Dynamic Load Rating (C) | 5,350 | N |
| Basic Static Load Rating (C₀) | 7,310 | N |
| Mass | 0.094 | kg (94 g) |
| Seal Type | UU | Double rubber contact seals (both sides) |
| Internal Clearance | T1 | Axial internal clearance (preload type) |
| Retainer | Separator‑type (A) | Precision 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 |
| Mounting | No pre‑drilled mounting holes | Slim design for direct clamping |
| Mounting Dimensions | dₐ = 64, Dₐ = 71 | mm |
Key Design Features
- Ultra‑Slim Profile: Compact dimensions (60×76×8 mm) ideal for space‑limited installationsIKO.
- High Rigidity: Crossed roller arrangement provides exceptional rigidity and minimal elastic deformation under combined loadsIKO.
- Multi‑Directional Load Capacity: Single bearing supports radial, axial, and moment loads, reducing system complexityIKO.
- Sealed Construction: UU double seals prevent contamination ingress and retain lubrication, extending service life.
- Precision Separator Retainer: Maintains roller alignment, reduces friction, and ensures stable rotational torqueIKO.
- T1 Clearance (Preload): Factory‑set axial preload guarantees high rotational accuracy and zero backlash.
- Separable Rings: Inner/outer rings are separable for easy installation and preload adjustmentIKO.
Typical Applications
- Industrial robot joints and compact rotary actuators
- Precision rotary tables for small machine tools
- Semiconductor manufacturing and inspection equipment
- Medical diagnostic and imaging devices
- Optical positioning systems and measuring instruments
- High‑precision automation modules and rotary stagesO
Model Code Explanation (IKO Standard)
| Code | Meaning |
|---|---|
| CRBS | Slim‑type crossed roller bearing |
| 60 | Inner diameter = 60 mm |
| 8 | Width = 8 mm |
| A | Separator‑type retainer |
| UU | Double rubber contact seals (both sides) |
| T1 | Axial internal clearance (preload specification) |
