GROB G352
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
Overview
The GROB G352 is the pallet-changer variant of the popular G350 platform, adding a dual-pallet system to GROB's mid-range 5-axis universal machining center for shops that need automated part changeover without a full pallet pool investment. With the same 600 x 560 x 560 mm (23.6 x 22 x 22 in) X/Y/Z travels and horizontal spindle architecture as the G350, the G352 adds integrated two-pallet exchange capability that transforms a versatile job shop 5-axis machine into a production-capable platform.
The motorized spindle delivers 30 kW (40 hp) continuous at speeds up to 16,000 rpm through an HSK-A63 interface, with optional 20,000 rpm and 30,000 rpm spindle packages for high-speed aluminum and graphite machining. GROB's signature horizontal spindle orientation with A/B trunnion table provides the chip evacuation and thermal stability advantages that set GROB machines apart from vertical-spindle competitors. The A-axis range of +30/-120 degrees combined with 360-degree continuous B-axis rotation delivers full part accessibility for complex aerospace and medical components.
The dual-pallet system uses 400 x 400 mm pallets with a maximum workpiece weight of 300 kg (661 lb) per pallet. Pallet exchange takes approximately 15 seconds, and during that time the operator can set up the next workpiece on the external station while the machine continues cutting. This simple but effective automation approach typically increases spindle utilization from 60-65% (single-table machine with operator loading) to 80-85% without the complexity or cost of robotic loading.
The G352 runs on Siemens Sinumerik 840D sl with GROB4Pilot interface, and the 60-position HSK-A63 tool magazine provides ample capacity for complex multi-operation programs. The machine's footprint of 3,200 x 3,800 mm is only marginally larger than the single-table G350, making the G352 an efficient upgrade for shops looking to boost productivity within their existing floor space. New G352 machines are priced between $450,000 and $650,000, representing approximately a 20-25% premium over the base G350 for the integrated pallet changer capability.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 600 mm (23.6 in) |
| Y-Axis Travel | 560 mm (22 in) |
| Z-Axis Travel | 560 mm (22 in) |
| A Axis Range | +30° / -120° |
| B Axis Range | 360° continuous |
| Max Spindle Speed | 16,000 rpm (20,000/30,000 optional) |
| Spindle Taper | HSK-A63 |
| Spindle Motor Power | 30 kW (40 hp) continuous |
| Pallet Size | 400 x 400 mm (15.7 x 15.7 in) |
| Number Of Pallets | 2 (dual pallet changer) |
| Max Workpiece Weight | 300 kg (661 lb) per pallet |
| Max Workpiece Diameter | Ø 500 mm (19.7 in) |
| Tool Capacity | 60 (HSK-A63) |
| CNC Control | Siemens Sinumerik 840D sl |
| Machine Weight | 12,500 kg (27,558 lb) |
| Floor Space Required | 3,200 x 3,800 mm (126 x 150 in) |
| Positioning Accuracy | +/- 0.004 mm |
| Rapid Traverse Rate | 55 m/min (2,165 ipm) |
| Brand | GROB |
| Model | G352 |
| Type | Horizontal Machining Centers |
| Images | none |
| Catalogid | 25047 |
| Mfg | GROB |
| Mpn | G352 |
| Title | Grob G352 Horizontal Machining Centers |
| X | 22.0 in |
| Y | 22.0 in |
Specifications sourced from machinetools.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Integrated dual-pallet changer adds production capability to the proven G350 platform without the complexity or cost of external automation
- Pallet exchange increases spindle utilization from ~65% to ~85% — the most cost-effective productivity improvement available on a 5-axis machine
- Horizontal spindle with A/B trunnion table delivers GROB's signature chip evacuation and thermal stability advantages for complex 5-axis parts
- 60-position tool magazine supports complex programs without tool-sharing limitations — enough for most multi-operation aerospace and medical parts
- Footprint only marginally larger than the single-table G350, preserving floor space efficiency when upgrading from manual loading
- Multiple spindle options from 16,000 to 30,000 rpm cover applications from titanium roughing to high-speed aluminum and graphite machining
Limitations
- Two-pallet system is simpler but less flexible than full pallet pool systems — shops needing 4+ pallets should consider the G350 with PSS-G
- 300 kg per-pallet workpiece limit restricts the G352 to small and medium parts — heavy steel workpieces may require the G550 or G552
- 20-25% price premium over the base G350 for the pallet changer may not be justified if part cycle times are short enough for operator loading
- Siemens 840D sl control adds complexity for shops not already running Siemens — the Heidenhain TNC 640 option is available but adds cost
Best For
Frequently Asked Questions
01
The G352 is the pallet-changer variant of the G350. Both share the same axis travels (600 x 560 x 560 mm), spindle options, and 5-axis kinematics. The G352 adds an integrated dual-pallet changer with 400 mm pallets, enabling part setup during cutting. The G350 uses a single rotary table and is typically loaded manually or with external automation. The G352 costs approximately 20-25% more but delivers significantly higher spindle utilization. Choose the G350 for maximum flexibility; choose the G352 for production throughput.
02
In typical applications, the G352's pallet changer increases spindle utilization from 60-65% (operator-loaded G350) to 80-85%. For parts with 15+ minute cycle times, the 15-second pallet exchange time is negligible, and the productivity gain comes almost entirely from eliminating operator wait time. For shorter cycle time parts, the percentage improvement is smaller. Shops running second and third shifts with reduced staffing see the biggest benefit, as the G352 can run two pallets alternately with minimal operator intervention.
03
Yes. While the G352 includes an integrated two-pallet changer, it can also interface with GROB's PSS-G pallet storage systems for expanded pallet capacity. However, shops needing large pallet pools typically start with the base G350 and add the PSS-G system directly, as this provides more flexibility in pallet count and cell layout. The G352's sweet spot is shops that want simple two-pallet automation without the cost and complexity of a full pallet pool.
Videos
OPEN MIND Technologies
GROB-WERKE GmbH & Co. KG
Area 419
CAMdivision
Community Discussions
Owner experience and review — Grob 150 / 350 : r/Machinists - Reddit
Troubleshooting and problem-solving — Turbine blade being machined by a 5-axis CNC (Grob G350)If your shop had the money, what 5-axis mill and what lathe ...Aftermath: The grinding wheel : r/Machinists - RedditWhy would this happen on a swiss type? : r/Machinists - RedditHow fix? : r/Machinists - Re
Troubleshooting and problem-solving — Aftermath: The grinding wheel : r/Machinists - RedditWhy would this happen on a swiss type? : r/Machinists - RedditHow fix? : r/Machinists - RedditIn need of some advice : r/machining - Reddit
Community discussion — Why would this happen on a swiss type? : r/Machinists - Reddit
Links to community discussions. Summaries are editorial — visit the original thread for full context.
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