GF Machining Solutions 5-Axis Machining Centers

GF Mikron MILL S 200 U

$300,000 - $420,000 Updated 2025-03-15

Key Specifications

X Travel

160 mm (6.3 in)

Y Travel

160 mm (6.3 in)

Z Travel

200 mm (7.9 in)

Max Spindle

50,000 RPM

Spindle Taper

HSK-E32

Tool Capacity

30 tools (60 / 150 optional)

Overview

The GF Mikron MILL S 200 U is the most compact 5-axis machine in GF Machining Solutions' speed-class lineup, purpose-built for ultra-precision micro-machining in five axes. With just 160 x 160 x 200 mm (6.3 x 6.3 x 7.9 in) of X/Y/Z travel, this is not a general-purpose machine — it's a surgical tool for the smallest, most demanding precision work in the mold, medical, watch, and electronics industries.

The 50,000 RPM Step-Tec spindle in HSK-E32 is the fastest in GF's lineup, delivering the cutting speeds needed for micro-diameter tools down to 0.1 mm. At these scales, every micron of vibration matters, and the polymer granite base provides the damping foundation that makes consistent micro-machining possible. The spindle delivers 8.5 kW and 3.4 Nm of torque — enough for the tiny tools and light cuts this machine is designed for.

The trunnion table handles workpieces up to just 8 kg (17.6 lb) on various System 3R pallet options (GPS 120, ITS 148, Macro Magnum 156, Macro 54). Rapid traverse hits 42 m/min (1,654 ipm), and the tool magazine scales from 30 to 150 pockets in HSK-E32, allowing extensive micro-tool inventories for complex electrode sets and micro-component programs.

The Heidenhain TNC 640 control provides the path accuracy and processing speed needed for 5-axis simultaneous micro-contouring. At 3,600 kg (7,937 lb), the S 200 U is remarkably compact and light for a 5-axis precision machine, fitting into tight shop floor layouts without difficulty.

New MILL S 200 U machines price between $300,000 and $420,000. The machine competes with the Kern Micro, Datron M8Cube, and Willemin-Macodel 508MT in the ultra-precision micro-machining segment.

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)
Max Spindle Speed	50,000 RPM
Spindle Taper	HSK-E32
Spindle Motor Power	8.5 kW (11.4 hp)
Spindle Torque	3.4 Nm (2.5 ft-lb)
Tool Capacity	30 tools (60 / 150 optional)
Table Size	System 3R GPS 120 / ITS 148 / Macro Magnum 156 pallet
Max Work Weight	8 kg (17.6 lb)
Rapid Traverse Rate	42 m/min (1,654 ipm)
CNC Control	Heidenhain TNC 640
Machine Weight	3,600 kg (7,937 lb)
Machine Base	Polymer granite

Specifications sourced from gfms.com — verified 2026-03-28

Strengths & Limitations

Strengths

50,000 RPM Step-Tec spindle is the fastest in GF's lineup, enabling micro-diameter tool cutting at optimal speeds
Ultra-compact 160 x 160 x 200 mm envelope is purpose-designed for micro-precision components — no wasted travel
Polymer granite base provides the vibration damping essential for consistent micro-machining quality
150-pocket tool magazine option allows extensive micro-tool inventories for complex multi-tool electrode programs
3,600 kg total weight and compact footprint fit into tight shop floor layouts without special foundations
System 3R pallet integration enables automated micro-part and micro-electrode production

Limitations

160 x 160 mm X/Y travel severely limits workpiece size — this is exclusively for micro and small-part work
8 kg max workpiece weight restricts applications to the smallest, lightest components
HSK-E32 tooling ecosystem is limited — fewer toolholder and cutting tool options than HSK-E40 or HSK-A63
3.4 Nm spindle torque allows only the lightest cuts — zero roughing capability
Premium pricing at $300K+ for such a specialized machine requires sufficient micro-machining volume to justify

Best For

Micro-electrode production for sinker EDM mold work with features below 0.5 mm Watch and luxury goods manufacturing requiring Swiss-quality micro-precision in 5-axis Medical micro-components including bone screws, dental implants, and micro-surgical instruments Electronics connector mold inserts with micro-pin features requiring sub-micron accuracy Micro-optics and micro-fluidic component machining Any 5-axis application where workpiece size is under 160mm and surface finish and accuracy are paramount

Frequently Asked Questions

01 What does a GF Mikron MILL S 200 U cost?

New MILL S 200 U machines price between $300,000 and $420,000 depending on tool magazine size, pallet configuration, and automation options. The 150-pocket tool magazine adds $15,000-$25,000 over the 30-pocket standard. Used machines from 2015-2020 trade between $120,000 and $250,000.

02 What applications is the S 200 U designed for?

The S 200 U is purpose-built for micro-machining: micro-electrodes for sinker EDM, watch components, micro-medical devices, electronics connector mold inserts, and micro-optics. If your parts fit within a 160 x 160 mm envelope and require sub-micron accuracy with 5-axis access, this is the machine. It is not suitable for general-purpose machining.

03 Why 50,000 RPM?

Micro-diameter tools (0.1-1.0 mm) require very high RPM to achieve adequate surface cutting speeds. A 0.2 mm endmill at 50,000 RPM runs at approximately 31 m/min SFM — reasonable for hardened steel. At lower spindle speeds, these tiny tools can't reach effective cutting speeds, leading to poor surface finish, excessive tool wear, and tool breakage.

04 How does the S 200 U compare to a Kern Micro?

Both target the ultra-precision micro-machining market. The Kern Micro offers hydrostatic guides for even better damping and smoother motion. The Mikron S 200 U counters with the proven Step-Tec spindle technology and GF's automation ecosystem. The Kern typically specs tighter accuracy. Pricing is comparable. Both are excellent machines — the choice often comes down to specific application requirements and service availability.

05 Can I use standard HSK-E40 tooling?

No. The S 200 U uses HSK-E32, which is smaller than HSK-E40. This is by design — the smaller interface matches the micro-diameter tooling this machine is built for. You'll need HSK-E32 toolholders and collets, which are available from major tooling manufacturers but in a smaller selection than HSK-E40 or HSK-A63.