Kern Micro HD
Key Specifications
X Travel
Y Travel
Z Travel
Rapid Traverse
b axis
c axis
How much does the Kern Micro HD cost?
Estimated price range
Our best estimate for a 5-axis machining center in this class — not a quote from Kern Microtechnik. Configuration moves it a long way.
Overview
The Kern Micro HD is a 5-axis machining center with 350 mm of X, 220 mm of Y and 250 mm of Z, and most of its listed figures describe motion: 60 m/min rapid traverse on X, Y and Z, with acceleration of 10 m/s² on X, 15 m/s² on Y and 20 m/s² on Z. The figures are those an authorised distributor's page gives for the model.
Acceleration matters more than the rapid rate on travels this short. Over 220 mm an axis seldom reaches top speed, and what shortens a 5-axis finishing program is how fast each axis can reverse. Z has the highest figure, 20 m/s².
Both rotary axes are specified in unusual detail. B swivels from -110° to +110°, with -180° to +110° as an option, at up to 100 1/min. C is 360° endless at up to 200 1/min. B-axis torque is 648 Nm at full load and 360 Nm constant, plus 300 Nm of holding torque when clamped. C is rated 135 Nm at full load and 75 Nm continuous. For positioned work, compare the cutting load with the clamped 300 Nm. In simultaneous work the constant ratings are the ones that count.
Two spindle interfaces are offered. The HSK 25 spindle runs to 30,000 1/min, or 50,000 1/min as an option, with 6 kW and 1.6 Nm. The HSK 40 spindle runs to 42,000 1/min with 15 kW and 5.9 Nm. Magazine size follows the interface: 20, 101 or 209 positions for HSK 25, and 18, 90 or 186 positions for HSK 40. Tool changing time is < 3 s and chip-to-chip time < 4.5 s. The control is a Heidenhain TNC640. The Micro Vario has the same 350 mm, 220 mm and 250 mm travels.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 350 mm |
| Y-Axis Travel | 220 mm |
| Z-Axis Travel | 250 mm |
| B Axis | -110° to +110° (Option -180° to +110°) |
| C Axis | 360° endless |
| Rapid Traverse Rate | 60 m/min (X, Y, Z) |
| Acceleration X | 10 m/s² |
| Acceleration Y | 15 m/s² |
| Acceleration Z | 20 m/s² |
| B Axis Speed Max | 100 1/min |
| C Axis Speed Max | 200 1/min |
| B Axis Full Load Torque | 648 Nm |
| B Axis Constant Torque | 360 Nm |
| B Axis Holding Torque Clamped | 300 Nm |
| C Axis Full Load Torque | 135 Nm |
| C Axis Continuous Torque | 75 Nm |
| Tool Capacity HSK 25 | 20 positions, 101 positions, 209 positions |
| Tool Capacity HSK 40 | 18 positions, 90 positions, 186 positions |
| Max Tool Diameter (full magazine) | 70 mm (each 2nd tool rack position not in use) |
| Max Tool Length | 150 mm (incl. tool holder) |
| Tool Changing Time | < 3 s |
| Chip to Chip Time | < 4.5 s |
| CNC Control | Heidenhain TNC640 |
| Spindle HSK 25 Speed Max | 30,000 1/min (50,000 1/min optional) |
| Spindle HSK 25 Torque S1 | 1.6 Nm |
| Spindle HSK 25 Power S1 | 6 kW |
| Spindle HSK 40 Speed Max | 42,000 1/min |
| Spindle HSK 40 Torque S1 | 5.9 Nm |
| Spindle HSK 40 Power S1 | 15 kW |
Specifications sourced from multistation.com (authorised dealer / distributor, not the manufacturer's own site) — verified 2026-10-06
Strengths & Limitations
Strengths
- 60 m/min rapid traverse on X, Y and Z, with acceleration up to 20 m/s² on Z
- HSK 40 spindle option with 15 kW and 5.9 Nm at up to 42,000 1/min
- Largest magazine: 209 positions for the HSK 25 spindle, 186 positions for the HSK 40 spindle
- B axis rated 648 Nm at full load and 360 Nm constant, with 300 Nm holding torque when clamped
- Tool changing time < 3 s and chip-to-chip time < 4.5 s
- C axis is 360° endless at up to 200 1/min
Limitations
- The HSK 25 spindle reaches 30,000 1/min as standard; 50,000 1/min is an option
- 70 mm tool diameter is only possible with each 2nd tool rack position not in use
- Tool length is limited to 150 mm including the tool holder
- The B-axis range of -180° to +110° is an option; the standard range is -110° to +110°
- Y travel is 220 mm, against 280 mm on the Evo
Best For
Frequently Asked Questions
01
Two interfaces. The HSK 25 spindle has a maximum speed of 30,000 1/min, with 50,000 1/min optional, and is rated 6 kW and 1.6 Nm. The HSK 40 spindle has a maximum speed of 42,000 1/min and is rated 15 kW and 5.9 Nm. The HSK 40 spindle is the choice when larger tools and more torque are needed; HSK 25 is for the smallest cutters.
02
It depends on the interface. With HSK 25 the magazine has 20, 101 or 209 positions; with HSK 40 it has 18, 90 or 186 positions. The maximum tool length is 150 mm including the tool holder, and the maximum diameter is 70 mm when each 2nd tool rack position is not in use.
03
Rapid traverse is 60 m/min on X, Y and Z. Acceleration is 10 m/s² on X, 15 m/s² on Y and 20 m/s² on Z. The B axis turns at up to 100 1/min and the C axis at up to 200 1/min.
04
B swivels from -110° to +110°, or -180° to +110° as an option, and C is 360° endless. The B axis is rated 648 Nm at full load, 360 Nm constant and 300 Nm holding torque when clamped. The C axis is rated 135 Nm at full load and 75 Nm continuous.
05
The Micro HD has 350 mm of X and 220 mm of Y; the Evo has 300 mm of X and 280 mm of Y. Both have 250 mm of Z. The Evo is listed with an HSK 25 spindle at 50,000 rpm and a Heidenhain iTNC 530 control, while the Micro HD offers HSK 25 or HSK 40 spindles and a Heidenhain TNC640.
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