Grob G750
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Rapid Traverse
How much does the Grob G750 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 G750 is a large 5-axis universal machining center with 1,000 mm of X, 1,100 mm of Y and 1,175 mm of Z travel, a 950 mm table and an interference diameter of 1,280 mm. Z is the longest of the three axes, which suits deep housings and long parts that have to be reached end-on.
Load capacity depends heavily on the pallet. The table carries 1,500 kg without a pallet and 1,000 kg with one, a third less, so a heavy part may decide for or against automation on this model. The pallet changer also changes the installation: the machine weighs 34,500 kg without it and 40,500 kg with it.
GROB lists the same standard spindle here as on the G350, 83 Nm at up to 12,000 rpm on HSK-A63. That is a light spindle for a machine that takes 1,500 kg parts, and for steel the higher-torque versions further down the list are the ones to consider. Nine other versions are offered. On HSK-A63: 206 Nm at 16,000 rpm, 47 Nm at 18,000 rpm, 47 Nm at 21,000 rpm and 63 Nm at 30,000 rpm. On HSK-A100: 265 Nm at 13,000 rpm, 575 Nm at 9,000 rpm, 340 Nm at 10,000 rpm, and 340 Nm and 344 Nm at 6,000 rpm.
Rapid traverse is 60 m/min in X, 50 m/min in Y and 75 m/min in Z, and chip-to-chip time is 3.3 s (t1, according to VDI 2852). The A axis swivels 230 degrees, the B axis rotates 360 degrees, and positioning accuracy is 0.006 mm in X, Y and Z. Tool length in the double disk-type tool magazine (HSK-A63) is 400 mm at the front and 650 mm at the back. The table has no control row.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 1,000 mm |
| Y-Axis Travel | 1,100 mm |
| Z-Axis Travel | 1,175 mm |
| Rapid Traverse Rate | 60/50/75 m/min (X/Y/Z) |
| Interference Diameter | 1,280 mm |
| Chip to Chip Time | 3.3 s (t1, according to VDI 2852) |
| Positioning Accuracy | 0.006 mm (X/Y/Z) |
| Table Diameter | 950 mm |
| Max Table Load | 1,000/1,500 kg (with/without pallet) |
| Machine Weight | 34,500/40,500 kg (without/with pallet changer) |
| Max Tool Length | 400/650 mm (double disk-type tool magazine, HSK-A63, front/back) |
| A Axis Swivel Range | 230 degrees |
| B Axis Swivel Range | 360 degrees |
| Spindle Taper | HSK-A63 / HSK-A100 |
| Max Spindle Speed | 12,000 rpm (standard) |
| Spindle Torque | 83 Nm (standard) |
| Spindle Versions | HSK-A63, 83 Nm, 12,000 rpm (standard); HSK-A63, 206 Nm, 16,000 rpm; HSK-A63, 47 Nm, 18,000 rpm; HSK-A63, 47 Nm, 21,000 rpm; HSK-A63, 63 Nm, 30,000 rpm; HSK-A100, 265 Nm, 13,000 rpm; HSK-A100, 575 Nm, 9,000 rpm; HSK-A100, 340 Nm, 10,000 rpm; HSK-A100, 340 Nm, 6,000 rpm; HSK-A100, 344 Nm, 6,000 rpm |
Specifications sourced from grobgroup.com — verified 2026-10-03
Strengths & Limitations
Strengths
- 1,280 mm interference diameter and 1,175 mm of Z travel for large and deep workpieces
- Table load of 1,500 kg without a pallet
- Ten spindle versions, up to 575 Nm at 9,000 rpm on HSK-A100 or 30,000 rpm on HSK-A63
- Positioning accuracy of 0.006 mm in X, Y and Z on travels of 1,000 mm and more
- Tools up to 650 mm long at the back of the double disk-type magazine
Limitations
- Table load falls from 1,500 kg to 1,000 kg with a pallet
- The standard spindle has 83 Nm, the same as on the much smaller G350; higher torque needs another version
- Rapid traverse of 60/50/75 m/min is below the 65/50/80 m/min of the G550, and chip-to-chip time is 3.3 s
- Weighs 34,500 kg, or 40,500 kg with the pallet changer, so the foundation has to be planned early
- Front magazine positions take tools only up to 400 mm long
Best For
Frequently Asked Questions
01
1,500 kg without a pallet and 1,000 kg with a pallet. The table is 950 mm in diameter and the interference diameter is 1,280 mm, so a part and fixture can extend beyond the table as long as they stay inside that swing.
02
The standard spindle is HSK-A63 with 83 Nm and 12,000 rpm. Nine other versions are listed, including 206 Nm at 16,000 rpm on HSK-A63 and 575 Nm at 9,000 rpm on HSK-A100. The table gives no power figures.
03
GROB gives 400/650 mm for the double disk-type tool magazine with HSK-A63, front/back: 400 mm at the front and 650 mm at the back. Limits for HSK-A100 tools, tool diameter and tool weight are not in the table.
04
The G550 has 800 mm of X, 1,020 mm of Y and 970 mm of Z travel and carries 800 kg without a pallet or 700 kg with one. The G750 has 1,000 mm, 1,100 mm and 1,175 mm and carries 1,500 kg or 1,000 kg. The G550 weighs 24,800 kg, or 27,500 kg with the pallet changer.
05
The G1050, with 1,500 mm (59.1 in) of X, 1,600 mm (63.0 in) of Y and 1,250 mm (49.2 in) of Z travel and an HSK-A100 interface. Table size on the G1050 ranges from 800 x 800 mm to 1000 x 1250 mm.
Videos
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