G750

5-axis universal machining center

The G750 5-axis universal machining center offers customers in industrial manufacturing top notch results when it comes to milling large parts.

The G750 machining center is suitable for practically every material and boasts convincing flexibility in various sectors.

Aerospace

Mechanical engineering

Automotive

Energy technology

Die and Mold Industries

Technical data

Working travels

1,000/1,100/1,175

in X-/Y-/Z-axis (mm)

Max. speeds

60/50/75

in X-/Y-/Z-axis (m/min)

Interference diameter

1,280

(mm)

All technical data

Chip-to-chip time t₁

3.3

according to VDI 2852 (s) relative to speed (rpm)

Positioning accuracy

0.006

in X-/Y-/Z-axis (mm)

Table diameter

950

(mm)

Table load

1,000/1,500

with/without pallet (kg)

Total weight

34,500/40,500

without/with pallet changer (kg)

Tool length for double disk-type tool magazine

400/650

HSK-A63 (front/back) (mm)

The benefits at a glance

High productivity

Optimized availability

High visibility

Flexible applications

Maintainable

Compact design

Optimized access

Round-the-clock service

Unique machine concept

Horizontal spindle position

The horizontal spindle position permits the longest possible Z-travel path and optimum chip fall.

Maximum stability

The unique arrangement of the three linear axes minimizes the distance between the guides and the machining point (TCP), lending the machine considerable stability.

Tunnel concept

The tunnel concept allows the largest possible component – even in the case of with extremely long tools – to be swiveled and machined within the work area without collision.

Large swivel range

Three linear and two rotary axes permit 5-sided machining, as well as 5-axis simultaneous interpolation, with a swivel range of 230 degrees in the A-axis and 360 degrees in the B-axis.

REQUEST AN OFFER NOW!

Select your desired specifications for a 5-axis machine from GROB directly in the form and we will send you your personal offer promptly!

GROB state-of-the-art technology

Disk-type tool magazine

Fast tool change through an intelligent magazine to motorized spindle arrangement

Horizontal motorized spindle

For meeting the toughest cutting requirements

Tilting rotary table

Almost limitless machining potentials thanks to the largest possible swivel range

Chip disposal

Uninterrupted part machining with chip disposal by a scraper-type conveyor

Machine bed

Intrinsically stiff welded design for optimum machine rigidity

G750 – Highly dynamic production

Watch our video to experience the manufacture of a structural component in the aerospace industry.

Find more videos here:

G750 from GROB – Highly dynamic production

Typical machining operations

Aluminium part

Dimensions of raw material (mm)	650x110x32
Industry	Aerospace
Material	F7050
Motorized spindle	16,000 rpm
Power/torque	32 kW/206 Nm

Francis turbine wheel

Dimensions of raw material (mm)]	Ø 800x250
Industry	Energy technology
Material	Chromium-nickel steel
Motorized spindle	10,000 rpm
Power/torque	66 kW/340 Nm

Mold insert

Dimensions of raw material (mm)	296x296x110
Industry	Die and Mold Industries
Material	Tool steel
Motorized spindle	30,000 rpm
Power/torque	53 kW/63 Nm

Tilting rotary tables

Various tilting rotary table versions are available for the G750, depending on the requirement. The powerful rotary tables are based on the latest torque motor technology and offer optimized dynamics.

Tilting rotary tables A-/B-axis

Choose between tilting rotary tables with T-grooves arranged in parallel (standard), as well as tilting rotary tables with pallet clamping system (option). In addition to the standard versions with an A- and B-axis, the "A-axis" (without B-axis) and "B-axis" (without A-axis) options are offered for the G750.

Spindle versions

Besides the broad range of spindles, the motorized spindles designed and produced by GROB itself are the preferred choice for optimized process design. These are optimally matched to the G750 and have optimized quality features.

Motorized spindle versions

HSK-A63, 83 Nm, 12,000 rpm (standard)
HSK-A63, 206 Nm, 16,000 rpm
HSK-A63, 47 Nm, 18,000 rpm
HSK-A63, 47 Nm, 21,000 rpm
HSK-A63, 63 Nm, 30,000 rpm
HSK-A100, 265 Nm, 13,000 rpm
HSK-A100, 575 Nm, 9,000 rpm
HSK-A100, 340 Nm, 10,000 rpm
HSK-A100, 340 Nm, 6,000 rpm
HSK-A100, 344 Nm, 6,000 rpm

Motorized spindle with cross-feed

The GROB motorized spindle with cross-feed allows complex internal and external contours to be manufactured with controllable tools. This spindle offers convincing system rigidity, high cutting speeds for machining contours and low tool costs. There are no additional interference contours on the motorized spindle and no need for referencing.

GROB Spindle Diagnostics (GSD)

GROB spindle diagnostics is a system that automatically monitors the condition of the motorized spindle. Benefits are a prolonged motorized spindle useful life, reduced tool wear and scheduled maintenance.

GROB Chip-in-Spindle Detection System (SiS)

This system is able to detect at an early stage tool clamping faults caused by chips between the plain surface and the spindle nose from 10 μm. So the machining process is optimized and rejects and damage are avoided.

Tool magazine

GROB tool magazine technology is set apart by fast chip-to-chip times, a smaller space requirement and optimized accessibility. Choose the right solution for you.

Doube disk-type tool magazine
Three disk magazine
Additional tool magazine

Automation solutions

Draw on the experience we have garnered over several decades and benefit from the automation technology we tailor to meet your needs – from solutions with part storage systems to highly flexible manufacturing lines.

Pallet changer system

Pallets are interchanged by means of a rotating pallet changer
Optimally-matched pallet clamping system fixes pallets on the rotary table and setup station in the machine
An integrated seating check system and flushing of the zero point clamping system guarantee high process reliability during the pallet change operation.

Pallet changer system

Benefits:

Loading and unloading of the parts to the machine setup station during the machining operation
Double pallet changer system compactly integrated into the machine
Optimized access to the rotatable and lockable setup station
Fast exchange of pallets between work area and setup station
Integrated seating check system for the pallets
Wide-opening setup station doors with crane loading capability

Customer-specific automation solution

Compact pallet storage system

The compact pallet storage system offers even greater flexibility in the configuration of pallet storage positions, permits a mixed operation of differently sized pallets and considers the length of the parts.

Flexible manufacturing system

In the full version, both the tool flow and the part flow can be automated.

Software options

Use the GROB software solutions to optimize and analyze the machine kinematics of the G750 and minimize deviations down to the finest detail.

GROB swivel axis calibration (GSC)

For highly precise machine calibration and control-specific kinematic cycles. The GSC achieves a much higher level of accuracy than standard calibration cycles without using swivel cycles.

GROB kinematic measurement inspection equipment set

In addition to the kinematic measuring cycles, all measuring instruments are supplied in an inspection equipment set.

Interpolation turning PLUS

The interpolation turning PLUS software solution enables any turning operations on the G750. Because both new and standard tools can be used, it remains economical at all times and is the ideal solution for prototype and small series production.

Energy efficiency package

For efficient use of energy by reducing the power consumption of the G750 (with SIEMENS control system).

Gear hobbing

For individual corrections and block entry at any cut, gear hobbing is a suitable process for external gearing and gearing on shafts.

Gear skiving

For perfect external and internal gearing with power skiving machines. Frontal part access required for hob peeling.