GF Machining Liechti Turbomill 800g Twin
Key Specifications
Max Spindle
Spindle Taper
Tool Capacity
Weight
Rapid Traverse
Spindle Power
Overview
The GF Machining Solutions GF Machining Liechti Turbomill 800g Twin is a heavy-duty 5-axis from the Turbomill family for turbine blades, guide vanes, and nozzle segments. Workzone: 800 mm, part dia: 300 mm (11.8 in). Dual independent spindles double roughing productivity.
The Turbomill series is Liechti’s legacy platform with decades of aerospace OEM installed-base experience worldwide.
Spindle: 20,000 RPM HSK-A63, 50 kW (67 hp), 150 Nm torque for aggressive superalloy roughing (60-70% of blade cycle time).
Turbosoft+ CAM with application-specific blade strategies. Siemens 840D sl for smooth simultaneous 5-axis interpolation.
Robust construction for larger blade types — LP turbine, IGT first-stage, steam turbine blading. Pricing: approximately $2,500,000 - $4,000,000.
Full Specifications
| Parameter | Value |
|---|---|
| Workzone Length | 800 mm |
| Max Part Diameter | 300 mm (11.8 in) |
| Number Of Axes | 5-axis simultaneous (dual spindle) |
| Max Spindle Speed | 20,000 RPM |
| Spindle Taper | HSK-A63 |
| Spindle Motor Power | 50 kW (67 hp) per spindle |
| Spindle Torque | 150 Nm |
| Spindle Configuration | Dual independent spindles |
| Tool Capacity | 60 (30 per spindle) |
| Rapid Traverse Rate | 30 m/min (1,181 ipm) |
| Positioning Accuracy | 0.004 mm (4 µm) |
| Cam Software | Liechti Turbosoft+ |
| CNC Control | Siemens Sinumerik 840D sl |
| Coolant System | High-pressure through-spindle (80 bar) |
| Machine Weight | 28,000 kg (61,729 lb) |
Specifications sourced from gfms.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 800 mm workzone accommodates large turbine blades exceeding go-Mill capacity
- Dual spindles double roughing productivity
- Proven platform with decades of aerospace OEM installed base
- Turbosoft+ CAM refined through decades of blade production
- Robust construction for large LP turbine and IGT blading
- Siemens 840D sl for smooth 5-axis interpolation
Limitations
- Heavier/larger footprint than go-Mill
- 20,000 RPM max vs go-Mill 36,000 RPM — less productive for small blade finishing
- At ,500,000 - ,000,000 requires consistent large-blade volume
- Legacy design may lack newest competitive features
Best For
Frequently Asked Questions
01
With 800 mm workzone: medium-large turbine blades, compressor blades, guide vanes.
02
Two independent 5-axis heads with separate tool magazines working simultaneously during roughing.
03
Inconel 718, Waspaloy, Rene 80, Ti-6Al-4V, single-crystal superalloys, cobalt-chrome, stainless steels.
04
Built for 20+ years. Spindle rebuilds every 15,000-25,000 hours.
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