High-precision hydraulic chuck For milling, drilling and reaming operations where precision and high pull-out security is required Available for the most common machine interfaces
The Test-Gauge for the CoroChuck® 930 is a product that ensures that your hydraulic chucks maintain their clamping force and performance, providing the reliability and precision needed for seamless operations.

How to use the Test-Gauge to verify the clamping functionality of the CoroChuck 930.
Recommended inspection interval
Regular checks with a Test-Gauge are recommended to ensure consistent clamping performance of the CoroChuck® 930. As a general guideline, verify the chuck at least every two months or after approximately 100 clampings. Service intervals may need to be adjusted in case of deviating environmental or operating conditions, and depending on product load.
| Article Code | CoroChuck® 930 Metric version to be used in |
| 930-GAU-06-1 | Pencil |
| 930-GAU-06-2 | Slender, T -version |
| 930-GAU-08-1 | Pencil |
| 930-GAU-08-2 | Slender, T -version |
| 930-GAU-10-1 | Pencil |
| 930-GAU-10-2 | Slender, T -version |
| 930-GAU-12-1 | Pencil |
| 930-GAU-12-2 | Slender, T -version |
| 930-GAU-20-1 | Pencil, HD |
| 930-GAU-20-2 | Slender, T -version |
| 930-GAU-25-1 | HD |
| 930-GAU-25-2 | Slender |
| 930-GAU-32-1 | HD |
*T = Turning
| Article Code | CoroChuck® 930 Inch version to be used in |
| 930-GAU-A25-2 | Slender |
| 930-GAU-A31-1 | HD |