4 K cryocoolers — SHI 6 K refrigerator
With a minimum temperature below 6 K, the Sumitomo RDK-408S is primarily noted for its high cooling power and modest cost. A conventional lead regenerator offers a unique combination of power, reliability, and affordability. (Please see our compressors page for more information.)
Standard configuration
Characteristics:
- Larger capacity of 6.5 W at 10 K
- Orientation independent
- Push-button operation
Download the RDK-408S typical load map (16 KB).
Cold head Model RDK-408S specifications
| Refrigeration cycle | Modified Gifford-McMahon | |
| Refrigeration capacity (vertical position) | 50 Hz | 1st stage: 30 W at 45 K; 2nd stage: 5.4 W at 10 K |
| 60 Hz | 1st stage: 35 W at 45 K; 2nd stage: 6.3 W at 10 K | |
| Orientation | Any — capacity loss: maximum 15% | |
| Weight | Approximately 15 kg | |
| Dimension | 180 D × 294 L × 520 H (mm) | |
| Maintenance interval | 10,000 h | |
| Flexline length | 6 m | |
| Flexline weight | 5 kg per line | |
| Compatible compressor unit model | CSA-71A, F-50L, F-50H | |
Specifications subject to change without notice.