# GROB G750

Hardware · `G750` · verification: source checked

The GROB G750 is a 5-axis universal machining center for milling large parts, with three linear axes (X/Y/Z) and two rotary axes on a tilting rotary table, giving 5-sided machining and 5-axis simultaneous interpolation. The spindle is mounted horizontally so chips fall clear and the Z travel can be long. The standard motorized spindle is HSK-A63 with 83 Nm at 12,000 rpm, and several other HSK-A63 and HSK-A100 spindle versions are offered.

## Specification

| Property | Value |
|---|---|
| Category | cnc mill |
| Axes | 5 |
| Weight | 34500 kg |
| Travel X | 1000 mm |
| Travel Y | 1100 mm |
| Travel Z | 1175 mm |
| Spindle max | 12000 rpm |
| Spindle taper | HSK-A63 |
| Rapid traverse | 75 m/min |
| Table load | 1500 kg |
| Spindle torque | 83 N·m |

## Connected

- Manufacturer: [GROB](https://machineschema.com/manufacturer/grob.md)

## Safety

- The pallet changer has an integrated seating check system and flushing of the zero point clamping system to verify pallet seating during the pallet change operation.
- GROB Chip-in-Spindle Detection System (SiS) detects tool clamping faults caused by chips between the plain surface and the spindle nose from 10 μm.

## Study notes

- Travels X/Y/Z are 1,000/1,100/1,175 mm; maximum axis speeds are 60/50/75 m/min.
- Table diameter is 950 mm. Table load is given as 1,000 kg with pallet / 1,500 kg without pallet.
- Total weight is 34,500 kg without pallet changer and 40,500 kg with pallet changer.
- Positioning accuracy is 0.006 mm in X/Y/Z. Chip-to-chip time is 3.3 s according to VDI 2852.
- Interference diameter is 1,280 mm.
- Swivel range is 230 degrees in the A-axis and 360 degrees in the B-axis; the tilting rotary table uses torque motors, and A-axis-only and B-axis-only versions are offered.
- Alternative motorized spindles: HSK-A63 206 Nm/16,000 rpm, 47 Nm/18,000 rpm, 47 Nm/21,000 rpm, 63 Nm/30,000 rpm; HSK-A100 265 Nm/13,000 rpm, 575 Nm/9,000 rpm, 340 Nm/10,000 rpm, 340 Nm/6,000 rpm, 344 Nm/6,000 rpm.
- Tool magazine options are double disk-type, three disk and additional magazine; tool length for the double disk-type magazine is 400/650 mm (front/back) for HSK-A63.
- The energy efficiency package is stated for machines with SIEMENS control system; no specific controller model is named in the document.
- Software options include interpolation turning PLUS and a kinematic measurement inspection equipment set.

## Sources

1. [Universal machining center G750](https://www.grobgroup.com/en/products/product-range/universal-machining-centers/milling-centers/g750/) (accessed 2026-10-26)

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