GF Machining MIKRON MILL X 400 U
Image: gfms.com, GF Machining Solutions
Key Specifications
X Travel
Y Travel
Z Travel
swiveling range
rotary range
rapid traverse xyz
How much does the GF Machining MIKRON MILL X 400 U cost?
Estimated price range
Our best estimate for a 5-axis machining center in this class — not a quote from GF Machining Solutions. Configuration moves it a long way.
Overview
The MIKRON MILL X 400 U is the faster twin of the Mikron MILL S 400 U: a compact 5-axis high-speed mill with 500 × 245 × 360 mm of travel, HSK-E40 spindles of 30,000 or 42,000 rpm, and linear rapids of 100 m/min where the MILL S runs 61 m/min. Everything else in the two tables is the same, so the choice between them comes down to how much of the cycle is spent moving rather than cutting.
That difference counts most on finishing programs with small step-overs, where the axes reverse thousands of times and acceleration sets the real feed. On roughing-heavy work the gap narrows, because the spindle (13.5 kW and 8.8 Nm listed for both speeds) limits the cut long before the axes do.
The envelope is short in Y. With 245 mm against 500 mm of X, parts are long and narrow or small, and the 25 kg table load keeps them light. The swivel axis covers +110° / -110° and the rotary axis turns n x 360°, at 165 / 250 rpm. Parts are clamped on MacroMagnum 156 or ITS 148 pallet surfaces, which suits a pallet magazine.
Controls are Heidenhain TNC 7 or Siemens SINUMERIK ONE, both with GF's Smart Machine modules. The series page also describes milling and jig grinding on one machine, with a dressing spindle carrying an acoustic emission sensor, a route for parts that would otherwise go to a separate jig grinder. The machine weighs 7,000 kg.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 500 mm |
| Y-Axis Travel | 245 mm |
| Z-Axis Travel | 360 mm |
| Swiveling Range | +110° / -110° |
| Rotary Range | n x 360° |
| Rapid Traverse Xyz | 61 m/min (MILL S) / 100 m/min (MILL X) |
| Rapid Traverse Swivel Rotary | 165 / 250 rpm |
| Spindle | 30,000 rpm (HSK-E40), 13.5 kW, 8.8 Nm; 42,000 rpm (HSK-E40), 13.5 kW, 8.8 Nm |
| Pallet Clamping Surface | MacroMagnum 156 / ITS 148 |
| Max Table Load | 25 kg |
| Tool Magazine | 30/60/150 (HSK-E32) |
| Machine Weight | 7,000 kg |
| CNC Control | Heidenhain TNC 7 / Siemens SINUMERIK ONE |
Specifications sourced from united-mikronmill.com — verified 2026-10-02
Strengths & Limitations
Strengths
- 100 m/min linear rapids, against 61 m/min on the Mikron MILL S 400 U
- HSK-E40 spindle options of 30,000 or 42,000 rpm
- Swivel range of +110° / -110° with n x 360° rotary, at 165 / 250 rpm
- Choice of Heidenhain TNC 7 or Siemens SINUMERIK ONE control
- MacroMagnum 156 and ITS 148 pallet clamping for automated loading
Limitations
- Y travel is only 245 mm, half the 500 mm of X
- Table load is 25 kg, pallet and clamping included
- 13.5 kW and 8.8 Nm on both spindle options limits heavy roughing
- The magazine row lists HSK-E32 holders while both spindles are HSK-E40; confirm the tool interface before ordering
Best For
Frequently Asked Questions
01
Linear rapids. The MIKRON MILL X 400 U is listed at 100 m/min and the Mikron MILL S 400 U at 61 m/min. Travels of 500 × 245 × 360 mm, the 25 kg table load, the HSK-E40 spindles and the 7,000 kg weight are the same on both.
02
Two HSK-E40 spindles, at 30,000 rpm or 42,000 rpm. The table lists 13.5 kW and 8.8 Nm for both. They are built for small cutters at high speed; the series as a whole spans 24,000 to 50,000 min⁻¹.
03
The table gives magazine sizes of 30, 60 or 150 pockets. It labels them HSK-E32 although both spindles are HSK-E40, so have GF confirm the holder type on the quotation.
04
GF's MILL S/X U series page describes combining milling and jig grinding on the same machining center, with a dressing spindle that has an acoustic emission sensor and with standard workpiece dimensions kept in automated setups. Ask GF which grinding package is offered on the X 400 U.
05
Heidenhain TNC 7 or Siemens SINUMERIK ONE. GF adds its own Smart Machine modules to both. Pick the one your programmers and existing machines already use.
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