GF Machining Liechti g-Mill 850
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Key Specifications
Max Spindle
Spindle Taper
Tool Capacity
Weight
Rapid Traverse
Spindle Power
How much does the GF Machining Liechti g-Mill 850 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 g-Mill 850 is a 5-axis simultaneous machining center listed for parts up to 850 mm in diameter, with a 30,000 rpm HSK-A63 spindle rated 50 kW and 120 Nm and a 40-tool magazine. These are the listed figures for this page. They have not been matched to a current Liechti or GF Machining Solutions specification sheet, so read them as a starting point for a quotation rather than as contract values.
The spindle sets the character of the machine. A top speed of 30,000 rpm paired with 120 Nm points toward small and medium cutters taking light, fast passes, which is how thin walls and freeform surfaces are usually finished. Heavy roughing with large face mills is where this machine would run short first, and a buyer planning that kind of stock removal should ask for the power and torque curve before deciding.
The next size listed, the Liechti g-Mill 1000, takes 1000 mm parts and carries 60 tools with a 60 kW, 150 Nm spindle. Rapid traverse of 40 m/min, the 0.003 mm positioning figure, the Siemens Sinumerik 840D sl control and Liechti Turbosoft+ CAM appear on both, so the choice comes down to part size, tool count and torque.
Coolant goes through the spindle at 80 bar, which helps clear chips from drilled holes and deep pockets. The machine is listed at 18,000 kg (39,683 lb), so the floor and the rigging route need checking well before delivery.
Full Specifications
| Parameter | Value |
|---|---|
| Max Part Diameter | 850 mm (33.5 in) |
| Number of Axes | 5-axis simultaneous |
| Max Spindle Speed | 30,000 RPM |
| Spindle Taper | HSK-A63 |
| Spindle Motor Power | 50 kW (67 hp) |
| Spindle Torque | 120 Nm |
| Tool Capacity | 40 |
| Rapid Traverse Rate | 40 m/min (1,575 ipm) |
| Positioning Accuracy | 0.003 mm (3 µm) |
| CAM Software | Liechti Turbosoft+ |
| CNC Control | Siemens Sinumerik 840D sl |
| Coolant System | High-pressure through-spindle (80 bar) |
| Machine Weight | 18,000 kg (39,683 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
- 30,000 rpm spindle on an HSK-A63 interface, rated 50 kW and 120 Nm in the listed table
- Takes parts up to 850 mm in diameter in 5-axis simultaneous work
- Through-spindle coolant at 80 bar for drilling and deep-pocket chip clearance
- Listed positioning accuracy of 0.003 mm with 40 m/min rapid traverse
Limitations
- 40 tool pockets, against 60 on the Liechti g-Mill 1000, so long tool lists may need tools swapped between operations
- 120 Nm of spindle torque limits heavy roughing with large-diameter cutters
- The table has not been matched to a current manufacturer specification sheet, so every figure needs confirming in a quotation
- At 18,000 kg (39,683 lb) the machine needs a foundation check before installation
Best For
Frequently Asked Questions
01
The Liechti g-Mill 1000 takes parts up to 1000 mm in diameter, has a 60 kW, 150 Nm spindle and holds 60 tools. The g-Mill 850 is listed at 850 mm, 50 kW, 120 Nm and 40 tools. Both run to 30,000 rpm on HSK-A63 with 40 m/min rapids and a 0.003 mm positioning figure.
02
A Siemens Sinumerik 840D sl control, with Liechti Turbosoft+ as the CAM package. Neither entry has been checked against a current manufacturer sheet, so ask for the control version and the scope of the software licence in writing when you request a quotation.
03
The high speed suits small cutters that need surface speed, for example ball-nose finishing of freeform surfaces. The 120 Nm torque figure means large cutters at low speed will be power- and torque-limited, so heavy roughing should be tested on a demonstration part before committing.
04
The listed weight is 18,000 kg (39,683 lb), so the floor slab, crane or rigging access and the delivery route need checking. Coolant runs through the spindle at 80 bar. Electrical and air requirements are not in the listed table and have to come from the supplier.
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