GF Machining Liechti go-Mill 800
Image: assets.georgfischer.com, GF Machining Solutions
Key Specifications
Max Spindle
Spindle Taper
Tool Capacity
Weight
Rapid Traverse
Spindle Power
How much does the GF Machining Liechti go-Mill 800 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 Liechti go-Mill 800 is the largest go-Mill listed here: a 5-axis simultaneous machine for parts up to 800 mm in diameter and 800 mm along the work zone. It keeps the go-Mill's 36,000 rpm HSK-E50 spindle, rated at 40 kW and 70 Nm, with a 30-tool magazine. As with the other Liechti pages, the table is a set of listed figures that has not been confirmed against a current Liechti or GF Machining Solutions specification.
The interesting comparison is across ranges. The Liechti g-Mill 850 covers almost the same part diameter, 850 mm, but with a 30,000 rpm HSK-A63 spindle rated 50 kW and 120 Nm and a 40-tool magazine. So the choice at this size is between speed and agility on the go-Mill and torque and tool count on the g-Mill.
The go-Mill side of that trade shows in the axis figures too: 50 m/min rapids and a 0.002 mm positioning figure, against 40 m/min and 0.003 mm on the Liechti g-Mill 850. For finishing work dominated by small cutters and long toolpaths, those figures count for more than torque.
The listed machine weight is 14,000 kg (30,865 lb). Coolant is delivered through the spindle at 80 bar. A Siemens Sinumerik 840D sl control and Liechti Turbosoft+ CAM are listed.
Full Specifications
| Parameter | Value |
|---|---|
| Max Part Diameter | 800 mm (31.5 in) |
| Workzone Length | 800 mm |
| Number of Axes | 5-axis simultaneous |
| Max Spindle Speed | 36,000 RPM |
| Spindle Taper | HSK-E50 |
| Spindle Motor Power | 40 kW (54 hp) |
| Spindle Torque | 70 Nm |
| Tool Capacity | 30 |
| Rapid Traverse Rate | 50 m/min (1,969 ipm) |
| Positioning Accuracy | 0.002 mm (2 µm) |
| CAM Software | Liechti Turbosoft+ |
| CNC Control | Siemens Sinumerik 840D sl |
| Coolant System | High-pressure through-spindle (80 bar) |
| Machine Weight | 14,000 kg (30,865 lb) |
Specifications compiled from manufacturer literature and industry references. Not independently verified against a published spec sheet — confirm with the manufacturer or an authorised dealer before making a purchasing decision.
Strengths & Limitations
Strengths
- Largest go-Mill envelope listed: 800 mm part diameter and 800 mm work zone length
- 36,000 rpm HSK-E50 spindle rated 40 kW and 70 Nm
- 50 m/min rapids and 0.002 mm listed positioning, against 40 m/min and 0.003 mm on the Liechti g-Mill 850
- 80 bar coolant through the spindle
Limitations
- 70 Nm is far below the 120 Nm listed for the Liechti g-Mill 850 at a similar part size
- 30 tool positions on a machine of this envelope may force tool swaps on complex parts
- The table has not been confirmed against a current manufacturer specification
- HSK-E50 holders are not interchangeable with HSK-A63 tooling
Best For
Frequently Asked Questions
01
The Liechti g-Mill 850 is listed with a 30,000 rpm HSK-A63 spindle at 50 kW and 120 Nm, 40 tools and 850 mm part diameter. The go-Mill 800 is listed with 36,000 rpm HSK-E50 at 40 kW and 70 Nm, 30 tools and 800 mm. Pick the go-Mill for speed and small tools, the g-Mill for torque and tool count.
02
The Liechti go-Mill 600 is listed at 600 mm part diameter and work zone length, 32 kW, 55 Nm and 12,000 kg. The go-Mill 800 takes 800 mm in both, with 40 kW, 70 Nm and 14,000 kg. Spindle speed, taper, tool count and rapids are the same.
03
The listed weight is 14,000 kg (30,865 lb). That figure goes to the foundation engineer and the rigger. Electrical supply, air and footprint are not in the listed table and should be taken from the supplier's installation drawing.
04
A Siemens Sinumerik 840D sl, with Liechti Turbosoft+ listed for CAM programming. Ask the supplier to confirm the control version and which software modules are included, as the table has not been checked against a current manufacturer sheet.
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