# GROB G350a

Hardware · `G350a` · verification: source checked

The GROB G350a is a 5-axis universal machining center with three linear axes and two rotary axes. It performs 5-sided machining and 5-axis simultaneous interpolation with a horizontal motorized spindle. Working travels are 600 mm in X, 770 mm in Y and 805 mm in Z.

## Specification

| Property | Value |
|---|---|
| Category | cnc mill |
| Axes | 5 |
| Weight | 15100 kg |
| Travel X | 600 mm |
| Travel Y | 770 mm |
| Travel Z | 805 mm |
| Spindle max | 12000 rpm |
| Spindle power | 52 kW |
| Spindle taper | HSK-A63 |
| Rapid traverse | 60 m/min |
| Table load | 400 kg |
| Spindle torque | 83 N·m |
| Max workpiece diameter | 720 mm |

## Connected

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

## Safety

- Table load with pallet is limited to 340 kg.
- A-axis swivel range is 230° and B-axis swivel range is 360°.
- Automatic work area door is listed in the basic machine option package.
- Decentralized work area extraction system is listed in the basic machine option package.

## Study notes

- Chip-to-chip time t1 is 4.5 s per VDI 2852 at 12,000 rpm.
- Positioning accuracy is 0.006 mm in X/Y/Z.
- Table diameter is 570 mm.
- Total weight with pallet changer is 16,600 kg.
- Optional spindles are HSK-A63 with 206 Nm at 16,000 rpm and 47 Nm at 18,000 rpm.
- Tool length with single disk-type magazine is 365 mm outside for HSK-A63; compact double disk-type magazine gives 365 mm outside and 200 mm inside.
- Three linear and two rotary axes provide 5-sided machining and 5-axis simultaneous interpolation.
- Automation options include rotary pallet storage system PSS-R for up to 15 pallets, part/pallet clamping system, and pallet changer.
- Option packages include tool cleaning, electromechanical tool breakage detection, laser measurement for milling tools, tool coding, touch probe, machine status light, 3D model, and SIEMENS or HEIDENHAIN hand-held controller.
- Example output carrier uses raw material Ø174x36 mm in C45 at 12,000 rpm and 52 kW/83 Nm.

## Sources

1. [G350a](https://www.grobgroup.com/en/products/product-range/universal-machining-centers/milling-centers/g350a/) (accessed 2026-10-26)

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