About Grob

Used Grob Universal CNC Machines for Sale

Resell CNC is your Simple. Reliable. and Trusted.® source for used Grob universal CNC machines — including 5-axis universal machining centers (G150, G350, G550, G750, G1050), the new GP1350 5-axis portal milling center, 5-axis mill-turn models (G550T), 4-axis universal machines (G440), modular system machining centers (G300, G500, G520F, G720F, G920), PSS-R rotary pallet storage systems, GRC robot cells, and complete GROB flexible manufacturing systems with automation and digital integration.

Grob-Werke GmbH & Co. KG was founded in 1926 in Munich and is today one of the world's leading manufacturers of machining centers, production systems, and assembly lines. The family-owned company, now in its third generation under Christian Grob, is headquartered in Mindelheim, Germany, with a production area exceeding 199,000 square meters and approximately 8,000 employees worldwide generating over EUR 1.3 billion in revenue. In addition to the main plant in Mindelheim, GROB operates production facilities in Bluffton, Ohio (GROB Systems, Inc., since 1983), São Paulo, Brazil (since 1956), Dalian, China, Pianezza, Italy, and Bangalore, India. GROB's signature machine concept features a horizontal spindle position, GROB-designed and manufactured motorized spindles, and a compact layout that guarantees free chip fall, optimized heat dissipation, and exceptional rigidity across 4- and 5-axis configurations.

Looking to sell your Grob? Resell CNC buys used Grob machines nationwide — any model, any generation, any condition. Free appraisal within 24 hours, competitive offers, and we handle all rigging and transportation. Call (844) 478-8181 or email sales@resellcnc.com.

Sell My Grob

Don't see the Grob you're looking for?
New inventory arrives daily. Create a free alert and we'll notify you the moment a matching Grob hits our inventory. Or call (844) 478-8181 — our team sources specific Grob models on request.

Grob 5-Axis Universal & Mill-Turn Machining Centers

GROB's universal machining center lineup covers four standard size classes: the compact G350, the mid-range G550, the large G750, and the heavy-duty G1050 (with pallet sizes up to 1,250 by 1,000 mm and workpiece diameters to 1,600 mm). The smallest G150 fills the compact end. All feature the signature GROB horizontal spindle concept with A-axis 225-degree swing and B-axis 360-degree rotation for full simultaneous 5-axis interpolation. The G550T adds integrated mill-turn capability for complete machining in a single clamping. The G440 is the 4-axis universal machine for production environments. The new GP1350, premiered at GROB's 100th anniversary exhibition in 2026, is a 5-axis portal milling center for large workpieces up to 3.6 tons, 1,750 mm diameter, and 1,650 mm height.

Grob System Machines, Automation & Digitalization

For high-volume automotive and electromobility production, GROB offers modular G-series system machining centers (G300, G500, G520F dual-spindle, G720F, G920 for mega and giga castings) that link into flexible manufacturing systems (FMS) with automation. GROB automation includes PSS-R rotary pallet storage systems (PSS-R15, PSS-R900, PSS-R1800), GRC robot cells (GRC-R12, GRC-R240, GRC-M60), additional tool magazines, and front or top loading options. GROB's digital portfolio includes GROB4Pilot operator interface, GROB Spindle Diagnostics (GSD), and the new GROB Cosera MES/MOM system for shop-floor production control.


Founded	1926 in Munich, Germany; HQ relocated to Mindelheim 1976; celebrating 100th anniversary in 2026
Headquarters	Mindelheim, Germany (199,000+ sq m production area)
US Operations	GROB Systems, Inc., Bluffton, Ohio (since 1983)
Global Presence	~8,000 employees, EUR 1.3B+ revenue; plants in Germany, USA (Bluffton OH), Brazil, China, Italy, India
Best Known For	Horizontal-spindle 5-axis universal machining centers, GROB-designed motorized spindles, flexible manufacturing systems, automotive production lines, electromobility assembly
Popular Models	G150, G350, G550, G550T, G750, G1050, GP1350, G440; system G300, G500, G520F, G720F, G920
Controls & Software	Siemens Sinumerik 840D sl / ONE; GROB4Pilot operator interface; GROB Spindle Diagnostics (GSD); GROB Cosera MES/MOM
Industries Served	Automotive, aerospace & defense, medical, energy, semiconductor, die & mold, electromobility, general manufacturing

What to Look for When Buying a Used Grob

Verify the GROB motorized spindle and axis system. GROB designs and manufactures its own motorized spindles, spanning high-speed HSK tooling to high-torque configurations (up to 100 kW, 2,500 Nm, 30,000 RPM depending on model). Test spindle runout, listen for bearing noise, and check thermal stability after warm-up. If GROB Spindle Diagnostics (GSD) data is available, review it for trend history. On 5-axis machines, verify A-axis (225-degree swing) and B-axis (360-degree rotation) for smooth motion, zero backlash, and accurate indexing.

Inspect the pallet system, tool changer, and automation. GROB machining centers commonly feature integrated pallet changers, PSS-R rotary pallet storage (PSS-R15, PSS-R900, PSS-R1800), or GRC robot cells. Cycle the pallet changer through every position and confirm clamping, alignment, and repeatability. Verify tool magazine capacity and cycle the ATC through every pocket. On dual-spindle G520F and G920 system machines, confirm both spindles operate within spec.

Check the Siemens control, GROB4Pilot, and digital systems. GROB machines run Siemens Sinumerik 840D sl or Sinumerik ONE with the GROB4Pilot operator interface. Confirm control state, option packages, and any GROB Cosera MES/MOM integration. On mill-turn G550T models, verify turning mode, C-axis function, and live tooling. On older machines, confirm Siemens control version and spare parts availability from GROB Systems in Bluffton, Ohio.

Grob 5-Axis Universal Machining Centers

G350 & G550 (Compact and Mid-Range)

The G350 (now Generation 2) is GROB's compact 5-axis universal machining center, widely deployed in aerospace, medical, and die-and-mold work. The G550 is the mid-range 5-axis universal, one of the most traded GROB machines on the used market, with a broad range of spindle, tool changer, and pallet options. Both feature the signature horizontal spindle with A-axis 225-degree and B-axis 360-degree simultaneous interpolation.

G750 & G1050 (Large and Heavy-Duty)

The G750 handles large workpieces with high rigidity and a generous work envelope. The G1050 is the largest standard GROB universal, with pallet sizes up to 1,250 by 1,000 mm and workpiece diameters to 1,600 mm. Both serve energy, aerospace, and heavy industrial production.

G150, G440, G550T & GP1350 (Specialty Universal)

The G150 is the smallest 5-axis universal for compact work. The G440 is a robust 4-axis universal for production environments. The G550T adds integrated mill-turn for complete machining in a single clamping. The GP1350, premiered in 2026, is GROB's 5-axis portal milling center for workpieces up to 3.6 tons, 1,750 mm diameter, and 1,650 mm height, targeting die and mold, energy, and aerospace.

Grob System Machines & Automation

G300, G500, G520F, G720F & G920 (Modular Production)

GROB's modular G-series system machining centers handle flexible high-volume automotive production. The G300 is the most compact. The G500 is the modular standard for cylinder blocks and crankcases. The G520F is a dual-spindle 5-axis platform for frame structures, chassis, and battery housings. The G720F handles larger frame components. The G920 (G920F4 4-axis, G920F5 5-axis) targets mega and giga castings up to 2,000 mm diameter and 2,900 mm length.

PSS-R Pallet Storage, GRC Robot Cells & Digital

GROB automation includes PSS-R rotary pallet storage (PSS-R15 compact 15-pallet, PSS-R900, PSS-R1800 large-capacity) integrating with universal machining centers for lights-out production. GRC robot cells (GRC-R12, GRC-R240, GRC-M60 modular) handle loading, deburring, washing, and marking. GROB Cosera provides MES/MOM digital shop-floor production control and traceability.

How to Sell Your Used Grob

Grob machines hold strong resale value due to 100 years of German engineering heritage, G350 and G550 popularity in aerospace and medical, a massive automotive installed base, and OEM parts and service through GROB Systems in Bluffton, Ohio.

Resell CNC buys used Grob machines, every model and generation, nationwide.

Contact us at (844) 478-8181 or sales@resellcnc.com.
Free appraisal within 24 hours, no obligation.
Accept the offer and we handle rigging, transport, and logistics.

Frequently Asked Questions About Used Grob Machines

Are used Grob machining centers reliable?

Yes. Grob-Werke has built machine tools in Germany since 1926 and is one of the world's largest machining center manufacturers. In-house spindle design, heavy-duty construction, and the horizontal spindle concept deliver long-term accuracy and durability. Parts and service are supported through GROB Systems in Bluffton, Ohio.

What CNC control does Grob use?

GROB machines run Siemens Sinumerik 840D sl or Sinumerik ONE with the GROB4Pilot operator interface. GROB Spindle Diagnostics (GSD) provides real-time spindle monitoring. GROB Cosera adds MES/MOM digital production control. Confirm control version and option packages when evaluating a used machine.

What should I inspect before buying a used Grob?

Focus on motorized spindle condition (review GSD data if available), A-axis and B-axis function on 5-axis machines, pallet changer and PSS-R storage, tool magazine cycling, Siemens control state, coolant and chip management, and turning mode on G550T mill-turn models.

Which Grob models hold their value best?

The G350, G550, G750, and G550T hold the strongest residual values, driven by aerospace, medical, and die-and-mold demand. Machines with PSS-R pallet automation and current Siemens controls command additional premium. Call (844) 478-8181 for valuations.

What is the GROB horizontal spindle concept?

Every GROB G-series machining center features a horizontal spindle as the foundation of the machine concept. This layout guarantees free chip fall (chips drop away from the cutting zone by gravity), optimized heat dissipation, and exceptional rigidity. Combined with A-axis 225-degree swing and B-axis 360-degree rotation, it delivers full 5-axis simultaneous machining.

Does Resell CNC offer financing on used Grob machines?

Yes. Resell CNC offers flexible financing options. Call (844) 478-8181 for terms.

How do I sell my used Grob?

Call (844) 478-8181 or email sales@resellcnc.com. We buy every Grob model nationwide. Free 24-hour appraisal.