5 Mar 2026
The Grob G750T: 5-axis milling, turning, and gear cutting. One machine, one setup, zero compromise.
But what does that mean? If you’re still unsure what this evolution in 5-axis milling is all about, then you’re in the right place as we take a deep dive into the capabilities of the Grob G750T.
The Grob G750T is a universal mill-turn machining centre that redefines what’s possible in precision manufacturing. This isn’t just another 5-axis machine.
It’s a complete manufacturing solution that handles complex components from start to finish in a single setup. At its core, the Grob G750T combines three linear axes with two rotary axes, delivering 5-sided machining and full 5-axis simultaneous interpolation.
This exceptional positioning flexibility means the cutting tool can approach your workpiece from virtually any angle without requiring repositioning.
However, what truly sets the G750-T apart is the “T” designation, which ensures full turning capabilities using Grob’s TRAORI turning technology, allowing you to machine turned features without transferring the component to a separate lathe.
Add power skiving for gear cutting, and you’ve got a machine capable of complete component manufacturing in one operation.
The G750-T uses a horizontal spindle position, which might seem like a simple design choice but delivers significant manufacturing advantages. This configuration allows the longest possible Z-axis travel whilst ensuring optimal chip evacuation.
When you’re machining aluminium aerospace components or cutting gears in steel, effective chip removal is essential for maintaining surface finish and tool life.
The horizontal orientation also provides exceptional visibility of the cutting process. Operators can clearly see machining operations, which is essential for process validation and quality assurance.
Grob achieves remarkable rigidity through the unique arrangement of three linear axes. By minimising the distance between the machine guides and the tool centre point, the G750-T delivers stability that translates directly into surface finish quality and dimensional accuracy.
This matters particularly when you’re machining large components to tight tolerances. The machine’s tunnel concept allows even extremely long tools to swivel and machine within the work area without risk of collision.
You’re not compromising on component size to achieve 5-axis capability.
The G750-T features a mill-turn table specifically designed for combined operations, offering significantly higher maximum speeds than pure milling centres. These tables handle the dynamic requirements of turning operations whilst maintaining the positioning accuracy essential for 5-axis milling.
With a turning capability of up to 500 revolutions per minute and a table that can hold a maximum mass of 1,200 kg, you realise the true capability and capacity of this machine.
The simultaneous 5-axis interpolation capability enables complex surface machining with optimal tool engagement angles throughout the cutting process. This delivers superior surface finishes and extends tool life by maintaining ideal cutting conditions.
For aerospace components with complex contours or medical device parts requiring precise surface characteristics, this capability is transformative.
TRAORI turning technology dynamically aligns the tool cutting edge to the turned component’s contour, accounting for both tool length and radius. This means you can use shorter, more rigid tools for turning operations, achieving longer tool life and better surface finish than conventional approaches.
Components requiring both milled features and turned diameters can be completed without leaving the machine. No secondary operations, no additional setups, no accumulated tolerance stack-up from handling between machines.
Power skiving represents a significant advancement in gear cutting technology, and the G750-T integrates this capability seamlessly.
Whether you’re producing external gears on shafts or internal gearing for planetary gear sets, power skiving delivers precise, efficient gear cutting within the same setup used for other machining operations.
For manufacturers producing geared components, this integration eliminates the need for dedicated gear-cutting machines for many applications. You machine the component body, cut the gear teeth, and finish any remaining features, all in one setup.
Aerospace components demand exceptional accuracy, comprehensive traceability, and the ability to work with challenging materials like titanium and Inconel. Thanks to the single-setup capabilities, complex housings, brackets, and structural components maintain perfect dimensional relationships throughout machining.
When every micron matters and material costs are substantial, eliminating setups reduces both quality risk and material waste.
Defence manufacturing requires rigorous quality standards and often involves small-to-medium batch quantities of highly complex components. The G750-T’s flexibility makes it ideal for this environment.
One machine can handle diverse component geometries without extensive retooling, whilst the complete machining capabilities reduce the number of operations requiring security clearance and oversight.
High-performance automotive components, particularly in motorsport and electric vehicle applications, increasingly feature integrated gearing and complex geometries.
The G750-T allows manufacturers to produce these components efficiently in the medium volumes typical of performance vehicle production. The ability to machine, turn, and cut gears in a single setup significantly reduces manufacturing timelines.
Hydraulic components, precision gearboxes, and semiconductor parts all benefit from the G750-T’s versatility. These components often combine milled housings with gear features, requiring both precision machining and gear cutting capabilities.
Completing these parts in a single setup reduces lead times and improves quality consistency.
The case for investing in a G750-T extends well beyond its impressive technical specifications. For manufacturers, several factors make this machine a strategic choice rather than simply a capability upgrade.
First is the setup time reduction. Every component repositioning introduces potential for error and consumes valuable production time.
By combining milling, turning, and gear cutting in a single setup, the G750-T eliminates handoffs. For medium to high-volume production, the accumulated time savings become substantial.
Second is quality improvement through reduced handling. When you machine a component from raw material to finished part without removing it from the machine, you eliminate accumulated tolerance stack-up from multiple setups.
Third is manufacturing flexibility. A single G750-T can handle a wide range of component types that would otherwise require multiple specialised machines. This flexibility is particularly valuable for manufacturers serving multiple industries or producing a diverse component portfolio.
At R E Thompson, we’ve integrated the Grob G750-T into our CNC machining capabilities to deliver the complete manufacturing solutions our customers demand. Our 75 years of precision engineering experience taught us that the best manufacturing processes prevent problems rather than just detecting them, and single-setup machining on the G750-T embodies this philosophy.
We use the G750-T extensively for aerospace and defence components where tolerance relationships across multiple features are critical.
The machine’s ability to mill complex housings, bore to precision, and cut gear features in a single setup means we can guarantee dimensional relationships that would be difficult (or impossible) to achieve across multiple machines.
Our gear manufacturing capabilities have been transformed by the G750-T’s integrated power skiving. Components that previously required transfer to dedicated gear-cutting equipment are now completed entirely within a single setup, reducing lead times and improving quality consistency.
The integration with our automated Fastems 36 pallet system means we can run the G750-T in lights-out manufacturing mode, maximising productivity whilst maintaining the quality standards our customers expect.
This combination of advanced machining capability and intelligent automation allows us to offer both rapid services for prototype quantities and efficient high-volume manufacturing for production runs.
Our manufacturing engineers work closely with customers during design phases to optimise components for the G750-T’s capabilities. Often, small design modifications that don’t affect functionality can unlock significant manufacturing efficiencies when you’re machining a complete part in a single setup.
The Grob G750-T represents where precision manufacturing is heading. Integrated processes that deliver complete components in single setups, combining multiple traditionally separate operations into cohesive manufacturing solutions.
For companies committed to quality, efficiency, and manufacturing excellence, machines like the G750-T aren’t optional upgrades; they’re essential infrastructure.
If you’re producing components up to 1,200mm in diameter and 1,000Kg in mass that could benefit from integrated milling, turning, and gear cutting capabilities, or if you’re simply looking to understand how modern 5-axis mill-turn technology could transform your manufacturing processes, contact our team.
We’re always here to discuss your specific requirements and demonstrate how our Grob G750-T capabilities can deliver the quality, efficiency, and reliability your projects demand.
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