Machine requirements
For machines that use ER32 tooling and water cooling. Check that your drive supports 30,000 rpm rated and that the mounting dimensions fit: Ø125 mm · 150 mm clamp.
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GDK SPINDLE · MANUAL
GDK125-30Z/7.5
An ER32 water-cooled spindle rated at 7.5 kW and 30,000 rpm, with a 1,000 Hz specification. VFD output frequency is a key selection check.
7.5 kW ratedER32Water-cooled30,000 rpm rated
MODEL SELECTION
Is this spindle right for your machine?
Check before ordering
The drawing gives a 395.5 mm body reference and a separate 85 mm rear projection. Do not add them to estimate overall length; check the full assembly drawing for clearance.
Compare alternatives
Compare the 12,000–24,000 rpm GDK125 configuration if the machine requires a different speed range.
Compare the differences →SPECIFICATIONS
Read the operating conditions.
This water-cooled spindle uses ER32 tooling. Power: 7.5 kW rated. Speed: 30,000 rpm rated. Installation dimensions and weight: 125 mm body diameter, 150 mm clamping length.
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| Output and duty | |
|---|---|
| Rated power (kW) | 7.5 |
| Rated speed (rpm) | 30,000 |
| Tooling and mounting | |
| Tool interface | ER32 |
| Tool change | Manual tool change |
| Electrical | |
| Spindle winding (V) | 380 |
| Rated current (A) | 15 |
| Frequency (Hz) | 1,000 |
| Dimensions and weight | |
| Body diameter (mm) | 125 |
| Clamping length (mm) | 150 |
| Body reference length (mm) | 395.5 |
| Rear projection (mm) | 85 |
| Cooling and feedback | |
| Cooling | Water-cooled |
| Air-seal pressure (MPa) | 0.1–0.2 |
| Water hose OD / ID (mm) | 10 / 7 |
INSTALLATION CHECKS
Match the whole assembly.
Start with the exact GDK125-30Z/7.5 configuration. Compare the mounting drawing, nose clearance and connection locations with the existing installation. Check the collet, nut clearance and usable clamp area before reusing tooling or supports.
- Check the water circuit and the connector details shown in the drawing.
- Ask for the voltage and current of the supplied spindle before choosing the drive. Do not use another model’s electrical ratings.
COMPARE RELATED SPINDLES
Compare the installation differences.
These models illustrate different interfaces and installation requirements. Check each drawing before choosing.
Scroll across to compare columns. Keyboard: focus the table area and use the left/right arrow keys.
| Model | Power / duty | Speed | Interface | Cooling | Key difference |
|---|---|---|---|---|---|
| GDK125-30Z/7.5Current configuration | 7.5 kW rated | 30,000 rpm rated | ER32 | Water-cooled | Ø125 mm · 150 mm clamp |
| GDK125-12-24Z/7.5 | 7.5 kW rated | 12,000–24,000 rpm | ER32 | Water-cooled | Ø125 mm · 404.5 mm overall · 190 mm clamp |
| GDK125-9-15Z/5.5-11 | 5.5 kW rated | 9,000–15,000 rpm | ER32 | Water-cooled | Ø125 mm · 405 mm overall · 190 mm clamp |
| GDK100-12-24Z/2.2-4.4 | 2.2 kW rated | 12,000–24,000 rpm | ER20 | Water-cooled | Ø100 mm · 295 mm overall · 140 mm clamp |
| GDK100-24Z/3.2 | 3.2 kW rated | 24,000 rpm rated | ER20 | Water-cooled | Ø100 mm · 295 mm overall · 140 mm clamp |
DOWNLOADS
Files for this configuration.
No standalone PDF is listed for this configuration. Use the full-size drawing above and include any document requirements in your inquiry.
For CAD or additional installation drawings, include the exact model and configuration in your inquiry.
MODEL QUESTIONS
Before you order.
What tooling and mounting does GDK125-30Z/7.5 need?
This configuration combines ER32 tooling, 30,000 rpm rated and Ø125 mm · 150 mm clamp. Keep the complete code when comparing drawings.
What should I include in a replacement inquiry?
Include the existing nameplate, mounting dimensions, required ER32 tooling, drive details and cooling arrangement. Compare the 12,000–24,000 rpm GDK125 configuration if the machine requires a different speed range.
REQUEST A QUOTE
Tell us what your machine needs.
Share a model or describe what you need to match. Unknown technical details can be left blank.
Useful details to have ready
- Exact code and readable nameplate
- Mounting dimensions and available clearance
- Tool interface and required speed
- Drive output, cooling and ATC connections
Attach photographs or drawings in your email application.