Grob G 800
This model was not found in Grob's current lineup when we checked on 2026-10-03 . It may be a superseded or older model; the specifications below are as we last recorded them.
Key Specifications
Max Spindle
Spindle Taper
Max Workpiece ⌀
x y z travel
rotary table diameter
max workpiece height
How much does the Grob G 800 cost?
Estimated price range
Our best estimate for a 5-axis machining center in this class — not a quote from Grob. Configuration moves it a long way.
Overview
The GROB G 800 is a horizontal-spindle 5-axis machining center with listed travels of 800 mm / 1,000 mm / 800 mm in X, Y and Z and an 800 mm rotary table. No manufacturer document could be found to check this table against, so read everything below as the listed figures and confirm each one against the paperwork of the actual machine.
The work envelope is bigger than the table. A workpiece can be up to 1,000 mm in diameter and 800 mm high, so a part or fixture may overhang the 800 mm table as long as it clears the swing. Table load is listed at 1,600 kg, enough for a heavy fixture plus the part. The A axis is given as 360 degrees (continuous) and the B axis swivel as +/-115 degrees.
The spindle deserves the closest look. HSK-A63 with 52 kW (S1) and 17,500 rpm is a fast, small-interface spindle for a machine that carries 1,600 kg, and the table gives no torque figure, so heavy roughing capacity cannot be judged from it. A 30,000 rpm spindle is listed as an option. The magazine holds 63 tools, or 150 as an option. Maximum feed rate is 50 m/min, and the control row reads Heidenhain TNC 640 or Siemens Sinumerik ONE.
Full Specifications
| Parameter | Value |
|---|---|
| X Y Z Travel | 800 mm / 1,000 mm / 800 mm |
| Rotary Table Diameter | 800 mm |
| Max Workpiece Diameter | 1,000 mm |
| Max Workpiece Height | 800 mm |
| Max Table Load | 1,600 kg |
| Spindle Orientation | Horizontal |
| Max Spindle Speed | 17,500 rpm (30,000 rpm optional) |
| Spindle Motor Power | 52 kW (S1) |
| Spindle Taper | HSK-A63 |
| B Axis Swivel Range | +/-115 degrees |
| A Axis | 360 degrees (continuous) |
| Feed Rate Max | 50 m/min |
| Tool Magazine Capacity | 63 tools (150 optional) |
| CNC Control | Heidenhain TNC 640 or Siemens Sinumerik ONE |
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
- Listed envelope of 800 mm / 1,000 mm / 800 mm, with room for a workpiece 1,000 mm in diameter and 800 mm high
- Table load listed at 1,600 kg on an 800 mm rotary table
- 17,500 rpm spindle with 52 kW (S1), and a 30,000 rpm spindle listed as an option
- 63-tool magazine with a 150-tool option for jobs that keep many tools loaded
Limitations
- The table has no source that could be checked, so every figure needs confirming against the machine's own documentation
- No spindle torque is listed and HSK-A63 is the only interface in the table, so heavy roughing capacity is an open question
- The 30,000 rpm spindle and the 150-tool magazine are options, not part of the base machine as listed
- No machine weight, footprint or rapid traverse row is listed; the only axis speed is a 50 m/min maximum feed rate
Best For
Frequently Asked Questions
01
The listed maximum workpiece is 1,000 mm in diameter and 800 mm high, on an 800 mm rotary table with a table load of 1,600 kg. Travels are listed as 800 mm / 1,000 mm / 800 mm. These figures could not be checked against a manufacturer source.
02
The table lists 17,500 rpm with 52 kW (S1) on an HSK-A63 interface, and a 30,000 rpm spindle as an option. No torque is given for either, so ask for the spindle data sheet of the machine in question before planning heavy cuts.
03
The A axis is listed as 360 degrees (continuous) and the B axis swivel range as +/-115 degrees. Axis naming differs between machine builders, so check on the machine which axis carries the table rotation and which the swivel.
04
63 tools as listed, with a 150-tool magazine as an option. The table gives no maximum tool length, diameter or weight, so those limits have to come from the documentation of the magazine actually fitted.
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