GF Machining MIKRON MILL S 200 U
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
Overview
The GF Machining MIKRON MILL S 200 U is an ultra-compact 5-axis simultaneous machining center purpose-built for the highest-precision micro-machining and small-part production in industries where sub-micron accuracy and mirror surface finishes define competitive advantage: watchmaking, medical implants, dental prosthetics, micro-mold inserts, and precision instrument components.
With X/Y/Z travels of just 160 x 160 x 200 mm (6.3 x 6.3 x 7.9 in), the MILL S 200 U is among the smallest 5-axis production machines available from any major manufacturer. The A-axis swivels from +30 to -120 degrees with continuous C-axis rotation, providing full simultaneous 5-axis contouring access to complex geometries on parts within an 8 kg (17.6 lb) envelope including the pallet.
The defining specification is the 50,000 RPM Step-Tec spindle with HSK-E32 taper, delivering 8.5 kW and 3.4 Nm. At 50,000 RPM with micro-diameter ball-end mills (0.1-2 mm), the MILL S 200 U achieves surface finishes approaching Ra 0.05 um, which in many applications eliminates the need for secondary polishing or EDM finishing entirely.
Rapid traverse of 42 m/min and rotary speeds of 150/220 RPM on swivel/rotate axes enable fast repositioning. Tool magazine holds 30 HSK-E32 tools (expandable to 60 or 150). The Heidenhain TNC 640 runs GF iQ Process Control with vibration monitoring tuned for micro-machining. Machine weight: 3,600 kg (7,937 lb). Pricing: $350,000-$550,000.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 160 mm (6.3 in) |
| Y-Axis Travel | 160 mm (6.3 in) |
| Z-Axis Travel | 200 mm (7.9 in) |
| A Axis Swivel Range | +30 deg to -120 deg |
| C Axis Rotation | n x 360 deg (continuous) |
| Rotary Speed | 150 / 220 RPM (swivel / rotate) |
| Max Spindle Speed | 50,000 RPM |
| Spindle Taper | HSK-E32 |
| Spindle Motor Power | 8.5 kW (11.4 hp) |
| Spindle Torque | 3.4 Nm |
| Spindle Technology | Step-Tec precision spindle |
| Max Workpiece Load | 8 kg (17.6 lb) including pallet |
| Tool Capacity | 68/168 (HSK-E40)15/30/60/120/170/220 (HSK-E50) |
| Rapid Traverse Rate | 42 m/min (1,654 ipm) |
| Pallet Options | GPS 120, ITS 148, Macro Magnum 156, Macro 54 |
| Machine Weight | 3,600 kg (7,937 lb) |
| CNC Control | Heidenhain TNC 640 |
| Travel Xyz | 800 x 600 x 500 mm31.5 x 23.62 x 19.68 in |
| Swiveling Range | +30°-110° |
| Rotary Range | n x 360° |
| Rapid Traverse Xyz | 61 m/min (MILL S)2,401 in/min100 m/min (MILL X)3,937 in/min |
| Rapid Traverse Swiveling Rotating | 60 / 150 rpm |
| Working Spindle | 42,000 (HSK-E40) / 13.5 / 8.8 rpm/kW/Nm36,000 (HSK-E50) / 33 / 21 rpm/kW/Nm |
| Pallet Clamping Surface | Dynafix 280 x 280/350 x 350GPS 240 x 240UPC 320 x 320 |
| Max Load | 120 kg264 lbs |
| Machine Weight | 9,900 kg21,825 lbs |
| Control Unit | Heidenhain TNC 7Siemens SINUMERIK ONE |
Specifications sourced from gfms.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 50,000 RPM Step-Tec spindle with HSK-E32 achieves Ra 0.05 um surface finishes, eliminating secondary polishing on micro-mold inserts and watch components
- Full simultaneous 5-axis with -120 to +30 deg A-axis and continuous C-axis provides complete geometric access in a single setup
- 3,600 kg machine mass provides thermal and dynamic stability foundation for micro-machining accuracy
- Tool magazine expandable to 150 HSK-E32 pockets enables extended unattended micro-part production
- Multiple pallet system compatibility (GPS 120, ITS 148, Macro) integrates into automated production cells
- Heidenhain TNC 640 with iQ Process Control provides vibration monitoring tuned for micro-machining
Limitations
- 160 x 160 x 200 mm travel and 8 kg max load strictly limit the machine to micro and small parts
- HSK-E32 taper requires specialized micro-machining toolholders not interchangeable with other standards
- 3.4 Nm spindle torque limits material removal rates; this is a finishing platform, not a roughing machine
- At $350K-$550K for a micro-machining platform, ROI requires sustained volume of high-value micro-parts
Best For
Frequently Asked Questions
01
$350,000-$550,000 new depending on tool magazine size and pallet system.
02
Purpose-built for micro-machining: 50K RPM spindle (vs 20K on MILL E/P/X), HSK-E32 taper (vs HSK-A63/E50), 160x160mm travel (vs 600+mm). Targets watchmaking, micro-mold, and medical micro-component work.
03
Yes. The 50K RPM Step-Tec spindle with HSK-E32 tooling machines hardened tool steel up to 65 HRC using micro-diameter ball-end mills, achieving mirror-quality finishes.
04
GPS 120 and ITS 148 most common for micro-mold work. Macro Magnum 156 for larger small parts. All integrate with System 3R WorkShopManager.
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