# GROB G720F

Hardware · `G720F` · verification: source checked

The GROB G720F is a two-spindle horizontal machining center for frame structure and chassis parts, and it machines two parts in parallel. Its X/Y/Z working travels are 1,450/1,200/1,035 mm, with maximum axis speeds of 80/50/100 m/min. Spindle options use HSK-A63 and HSK-A100 interfaces, and loading can be manual or automatic front or top loading.

## Specification

| Property | Value |
|---|---|
| Category | cnc mill |
| Travel X | 1450 mm |
| Travel Y | 1200 mm |
| Travel Z | 1035 mm |
| Spindles | 2 |

## Connected

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

## Study notes

- Maximum axis speeds are 80 m/min in X, 50 m/min in Y, and 100 m/min in Z.
- Chip-to-chip time t1 to VDI 2852 is 2.9 s, stated relative to a rotational speed.
- Position accuracy in X/Y/Z is 0.01 mm.
- Table diameter is 512 mm; table load is 2x635 kg with pallet and 2x750 kg without pallet.
- Total weight is 35,000 kg without pallet changer and 45,000 kg with pallet changer.
- Interference diameter is 2x1,500 mm.
- Spindle versions: HSK-A63 at 47 Nm/12,000 rpm, 47 Nm/18,000 rpm, 83 Nm/12,000 rpm and 86 Nm/17,000 rpm; HSK-A100 at 185.5 Nm/12,000 rpm and 340 Nm/10,000 rpm.
- Battery-tray example lists a motorized spindle at 18,000 rpm and 29 kW/34.6 Nm.
- Tool magazine options are single disk-type and double disk-type.
- Loading options include top-loading robot, Cartesian linear gantry, Cartesian linear gantry with telescope, and front-loading swiveling changer.
- GROB Spindle Diagnostics (GSD) monitors motorized spindle condition; Chip-in-Spindle Detection System (SiS) detects tool clamping faults from 10 μm.
- Machine can be used stand-alone or linked to other machines; axis arrangement uses horizontal spindle position.

## Sources

1. [G720F](https://www.grobgroup.com/en/products/product-range/machining-technology/machining-centers-for-frame-structure-parts/g720f/) (accessed 2026-10-26)

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