GF Machining Solutions Vertical Machining Centers

GF Mikron MILL P 900

$350,000 - $480,000 Updated 2025-03-15

Key Specifications

X Travel

900 mm (35.4 in)

Y Travel

600 mm (23.6 in)

Z Travel

450 mm (17.7 in)

Max Spindle

20,000 RPM HSK-A63 / 36,000 RPM HSK-E50

Spindle Taper

HSK-A63 or HSK-E50

Tool Capacity

30 / 60 pockets

Overview

The GF Mikron MILL P 900 is the largest machine in GF Machining Solutions' performance-class vertical milling range, combining a 900 x 600 x 450 mm (35.4 x 23.6 x 17.7 in) work envelope with the thermal stability and precision that define the P line. This machine targets shops doing high-value mold finishing on larger plates where ±4 micron accuracy over extended cycles isn't a wish — it's a requirement.

The spindle options tell the story of the P 900's versatility within the precision space. The 20,000 RPM HSK-A63 unit delivers 120 Nm of torque, making this machine genuinely capable of semi-finishing and moderate roughing in addition to finish passes. Alternatively, a 36,000 RPM HSK-E50 spindle is available for shops that prioritize speed-class finishing capability. That torque-to-speed range is broader than any other machine in the P line, making the P 900 the most versatile precision platform GF offers in the 3-axis format.

The 1,000 x 600 mm (39.4 x 23.6 in) T-slot table handles workpieces up to 1,000 kg (2,205 lb), so you can fixture serious mold plates without worrying about table capacity. The 30 m/min (1,181 ipm) feed rate, 30/60 pocket tool magazine, and Delphin 400 x 400 mm pallet option provide the production infrastructure for automated lights-out operation.

Active thermal management across the spindle, machine structure, and ambient environment maintains dimensional stability through long cycles. The polymer granite base provides the vibration damping foundation, and the Heidenhain TNC 7 or Siemens control handles complex 3D surface programs with the block processing speed these jobs demand.

New MILL P 900 machines price between $350,000 and $480,000 depending on spindle, control, and automation. The P 900 competes with the Makino F8, Yasda YBM 950V, and Röders RXP 950 in the larger precision mold finishing segment.

Full Specifications

Parameter	Value
X-Axis Travel	900 mm (35.4 in)
Y-Axis Travel	600 mm (23.6 in)
Z-Axis Travel	450 mm (17.7 in)
Max Spindle Speed	20,000 RPM HSK-A63 / 36,000 RPM HSK-E50
Spindle Taper	HSK-A63 or HSK-E50
Spindle Motor Power	22 kW (30 hp)
Spindle Torque	120 Nm (88.5 ft-lb) at 20K RPM
Tool Capacity	30 / 60 pockets
Table Size	1,000 x 600 mm (39.4 x 23.6 in)
Max Work Weight	1,000 kg (2,205 lb)
Rapid Traverse Rate	30 m/min (1,181 ipm)
Feed Rate	30 m/min (1,181 ipm)
Pallet Option	Delphin 400 x 400 mm
Automation	Pallet magazine 5 pallets DelphinSystem 3R WorkPartner 1+, Transformer WorkMaster & Transformer 6-axis
CNC Control	Heidenhain TNC 7 / Siemens SINUMERIK ONE
Machine Weight	10,500 kg (23,149 lb)
Machine Base	Polymer granite
Travel X Y Z	900 x 600 x 450 mm
Feed Rate X Y Z	30 m/min
Working Table	T-slot table 1000 x 600 mmDelphin pallet 400 x 400 mm
Table Load Capacity	1000 kg
Working Spindle	20'000 rpm - HSK-A6336'000 rpm - HSK-E50

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

Strengths & Limitations

Strengths

Largest work envelope in the P series (900mm X-travel) handles bigger mold plates while maintaining ±4 µm thermal stability
Dual spindle architecture — 20K RPM HSK-A63 with 120 Nm or 36K RPM HSK-E50 — covers everything from semi-roughing to mirror finishing
1,000 kg table load capacity accommodates heavy steel mold bases that smaller P and S series machines cannot support
Delphin pallet system and System 3R automation enable lights-out production of high-value mold components
Polymer granite base with active thermal management delivers consistent accuracy through multi-hour unattended cycles
HSK-A63 option provides the rigidity and torque for real material removal, not just finishing

Limitations

450 mm Z-axis travel is relatively short for the machine's X/Y envelope — tall parts may require creative fixturing
Premium pricing starting at $350K puts this firmly in the capital investment category for most shops
10,500 kg machine weight requires substantial rigging and floor preparation
Slower 30 m/min rapids compared to the S series' 61 m/min, adding non-cutting time on long traverses
GF's service presence is thinner than Japanese builders in North America for critical support situations

Best For

Large mold finishing operations where plate sizes exceed 500mm and ±4 µm accuracy is required Automotive mold shops producing bumper, dashboard, and interior component molds requiring precision finishing Shops needing a single platform that handles semi-roughing through mirror finishing with interchangeable spindle configurations Automated precision manufacturing cells using Delphin or System 3R pallet systems Die and mold makers working with heavy steel plates up to 1,000 kg that need Mikron-class finish quality High-value mold components for optical, medical, and consumer electronics applications

Frequently Asked Questions

01 What does a new GF Mikron MILL P 900 cost?

New MILL P 900 machines price between $350,000 and $480,000 depending on spindle selection, control, tool magazine, and automation. The HSK-A63 spindle configuration is typically the base; the 36K HSK-E50 adds $10,000-$20,000. Full Delphin pallet automation adds $60,000-$120,000. Used machines from 2016-2020 trade between $150,000 and $300,000.

02 Should I choose the 20K HSK-A63 or 36K HSK-E50 spindle?

The 20K HSK-A63 is more versatile — 120 Nm of torque handles semi-roughing through finishing, and the HSK-A63 tooling ecosystem is larger. The 36K HSK-E50 is for shops primarily doing fine finishing with micro-diameter cutters where spindle speed directly impacts surface quality. Most mold shops choose the HSK-A63 for its versatility unless they have dedicated roughing machines and only need the P 900 for finishing.

03 How does the MILL P 900 compare to the Makino F8?

Both target large-envelope precision mold finishing. The Makino F8 offers a 20,000 RPM HSK-A63 spindle with strong rigidity from its cast iron construction and Super Geometric Intelligence (SGI) control technology. The P 900 counters with polymer granite damping, active thermal management, and the option of a 36K RPM spindle. Pricing is comparable. Service availability in North America favors Makino.

04 What's the difference between the P 900 and P 500?

The P 900 offers significantly more X-axis travel (900 vs 500mm), a larger table (1,000 x 600 vs 600 x 500mm), and dramatically higher table load capacity (1,000 vs 300 kg). The P 900 also adds the HSK-A63 spindle option with 120 Nm torque, making it more versatile than the HSK-E40-only P 500. The P 900 handles larger mold plates; the P 500 is optimized for smaller inserts.

05 Can the P 900 replace dedicated roughing and finishing machines?

With the 20K HSK-A63 / 120 Nm spindle, the P 900 can handle moderate roughing and excellent finishing on the same platform. For aggressive hogging of hardened steel or high-MRR aluminum work, a dedicated roughing machine still makes sense. But for many mold shops, the P 900 reduces the number of setups and machines needed for a complete mold finish workflow.