GROB G552
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
How much does the GROB G552 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 G552 is listed as a 5-axis machining center with a dual pallet changer, 800 mm (31.5 in) of X travel and a 16,000 rpm HSK-A63 spindle. Each of its two pallets takes a workpiece of up to 600 kg (1,323 lb) and Ø 700 mm (27.6 in).
The rotary axes decide what it can reach. The A axis is listed at +30° / -120° and the B axis at 360° continuous. The B axis turns without limit, while the A axis swings much further one way than the other, so check that the faces you need fall on the -120° side. With two pallets, that range suits parts machined on five sides in one clamping while the next is loaded outside the work area.
Spindle options are listed as 20,000 rpm in place of 16,000 rpm, and HSK-A100 in place of HSK-A63. Rapid traverse is 50 m/min (1,969 ipm) and positioning accuracy +/- 0.005 mm. The control is a Siemens Sinumerik 840D sl.
For installation the listed figures are 18,500 kg (40,786 lb) and a footprint of 3,800 x 4,500 mm (150 x 177 in). Among GROB's other models, the G550 is listed with the same 800 mm of X and at 24,800/27,500 kg without and with a pallet changer, so the G552 figure describes a lighter machine on the same X stroke. The table gives more than one value for Y and Z travel, spindle power, tool capacity and pallet size; settle those with GROB before comparing it with anything else.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 800 mm (31.5 in) |
| Pallet Size | 600 x 600 mm (23.6 x 23.6 in) |
| Number of Pallets | 2 (dual pallet changer) |
| Max Workpiece Weight | 600 kg (1,323 lb) per pallet |
| Max Workpiece Diameter | Ø 700 mm (27.6 in) |
| Rapid Traverse Rate | 50 m/min (1,969 ipm) |
| Y-Axis Travel | 780 mm (30.7 in) |
| Z-Axis Travel | 780 mm (30.7 in) |
| A Axis Range | +30° / -120° |
| B Axis Range | 360° continuous |
| Max Spindle Speed | 16,000 rpm (20,000 rpm optional) |
| Spindle Taper | HSK-A63 (HSK-A100 optional) |
| Spindle Motor Power | 41 kW (55 hp) continuous |
| Tool Capacity | 80 (expandable to 120) |
| CNC Control | Siemens Sinumerik 840D sl |
| Machine Weight | 18,500 kg (40,786 lb) |
| Floor Space Required | 3,800 x 4,500 mm (150 x 177 in) |
| Positioning Accuracy | +/- 0.005 mm |
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
- Dual pallet changer: 2 pallets, each rated for 600 kg (1,323 lb)
- B axis listed as 360° continuous with an A axis of +30° / -120°
- 16,000 rpm spindle with a 20,000 rpm option
- Rapid traverse of 50 m/min (1,969 ipm)
- Positioning accuracy listed at +/- 0.005 mm
Limitations
- Workpieces are limited to Ø 700 mm (27.6 in) and 600 kg (1,323 lb) per pallet
- The 20,000 rpm spindle and the HSK-A100 taper are options, not the listed base machine
- A axis travel is asymmetric at +30° / -120°, so features must be planned to fall on the long side of the swing
- The listed figures conflict on Y and Z travel, spindle power, tool capacity and pallet size; confirm them before using this page for a fit check
- Needs a floor area of 3,800 x 4,500 mm (150 x 177 in) and weighs 18,500 kg (40,786 lb)
Best For
Frequently Asked Questions
01
Up to 600 kg (1,323 lb) per pallet and a maximum workpiece diameter of Ø 700 mm (27.6 in). There are 2 pallets on a dual pallet changer. X travel is 800 mm (31.5 in); confirm the Y and Z travels with GROB, because the listed figures give more than one value for each.
02
The A axis is listed at +30° / -120° and the B axis at 360° continuous. The B axis can keep turning in one direction, while the A axis has most of its travel on the negative side, so fixture orientation decides which faces can be reached.
03
The listed spindle runs to 16,000 rpm with an HSK-A63 taper. A 20,000 rpm spindle and an HSK-A100 taper are listed as options. Spindle power appears twice in the listed figures with different values, so take the power and torque from the quotation for the spindle you choose.
04
Both are listed with 800 mm of X travel. The G550 is listed at 24,800/27,500 kg without and with a pallet changer and with rapids of 65/50/80 m/min in X/Y/Z; the G552 is listed at 18,500 kg (40,786 lb) with a single rapid figure of 50 m/min (1,969 ipm).
05
The listed footprint is 3,800 x 4,500 mm (150 x 177 in) and the machine weight is 18,500 kg (40,786 lb). The control is a Siemens Sinumerik 840D sl. No power or air supply figures are listed, so get the installation drawing before preparing the site.
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