Best fit
For a ER20 installation with water-cooled and 24,000 rpm rated. Mounting requirements: Ø100 mm · 295 mm overall · 140 mm clamp. Compare these dimensions with the machine before choosing.

GDK SPINDLE · MANUAL
A water-cooled 3.2 kW spindle with ER20 tooling and a fixed 24,000 rpm rated point. It differs electrically from the variable-range GDK100 model.
QUICK DECISION
For a ER20 installation with water-cooled and 24,000 rpm rated. Mounting requirements: Ø100 mm · 295 mm overall · 140 mm clamp. Compare these dimensions with the machine before choosing.
The specification block and nose callout disagree on the nose thread. ER20 is consistent, but the thread dimension must be confirmed before ordering mating hardware.
GDK100-12-24Z/2.2-4.4 has a documented speed range and duty-dependent curve; it is not the same output configuration.
Compare the differences →SPECIFICATIONS
The documented configuration uses ER20 tooling and water-cooled. Output: 3.2 kW rated. Operating speed: 24,000 rpm rated. The drawing lists 100 mm body diameter, 140 mm clamping length, 295 mm overall length, 12 kg weight. Documented winding configurations are 220 V / 11 A or 380 V / 6.4 A.
Scroll across to compare columns. Keyboard: focus the table area and use the left/right arrow keys.
| Output and duty | |
|---|---|
| Rated power (kW) | 3.2 |
| Rated speed (rpm) | 24,000 |
| Tooling and mounting | |
| Tool interface | ER20 |
| Tool change | Manual tool change |
| Electrical | |
| Frequency (Hz) | 400 |
| Dimensions and weight | |
| Body diameter (mm) | 100 |
| Overall length (mm) | 295 |
| Clamping length (mm) | 140 |
| Weight (kg) | 12 |
| Cooling and feedback | |
| Cooling | Water-cooled |
Voltage and current stay paired within the selected winding.
INSTALLATION CHECKS
Start with the exact GDK100-24Z/3.2 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.

COMPARE RELATED SPINDLES
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 |
|---|---|---|---|---|---|
| GDK100-24Z/3.2Current configuration | 3.2 kW rated | 24,000 rpm rated | ER20 | Water-cooled | Ø100 mm · 295 mm overall · 140 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 |
| GDK105-21Z/3.5 | 3.5 kW rated | 21,000 rpm rated | ER20 | Water-cooled | Ø105 mm · 312 mm overall |
| GDK105-9-21Z/2.2-5.0 | 2.2 kW rated | 9,000–21,000 rpm | ER20 | Water-cooled | Ø105 mm · 344 mm overall · 155 mm clamp |
| GDK80-12-24Z/1.2-2.4 | 1.2 kW rated | 12,000–24,000 rpm | ER20 | Water-cooled | Ø80 mm · 284 mm overall · 135 mm clamp |
DOWNLOADS
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
This configuration combines ER20 tooling, 24,000 rpm rated and Ø100 mm · 295 mm overall · 140 mm clamp. Keep the complete code when comparing drawings.
Include the existing nameplate, mounting dimensions, required ER20 tooling, drive details and cooling arrangement. GDK100-12-24Z/2.2-4.4 has a documented speed range and duty-dependent curve; it is not the same output configuration.
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