STC 800 Dynamic 5-axis machining center

STC Series
STC 800
Dynamic 5-axis machining center

New dimension of flexibility
With the introduction of the STC 800 StarragHeckert once again lives
up to its reputation as technology leader in the field of 5-axis machin-
ing technology. It was our aim to develop a modular machining center,
which can be flexibly configured to meet the different requirements of
modern production concepts.
The machine offers maximum stability and performance while also featuring a
very compact design. These are crucial requirements to produce even highly
complex pieces in aluminum, steel, titanium and other difficult-to-machine
materials in a highly precise and economic manner. The five-side machining is
done simultaneously on five axes and at any required angle.
With its uncompromising technology the machining center shows its strengths
when dealing with a variety of challenging machining solu-
tions, in the fields of aircraft and engine construction,
steam and gas turbine construction as well as
in the fields of production engineering and
mechanical engineering.
Milling spindle of the STC 800

STC Series

The higher the requirements on
machining flexibility, the more
obvious the strengths of this
machining center become. The
STC 800 was consistently developed
for economical machining. Flexibility in focus
Modular machine concept
The high flexibility of the STC 800 provides
crucial advantages especially if quickly
changing applications need to by realized
safely and efficiently by using new, innova-
tive technologies. This and ever-increasing
demands in terms of quality and precision
call for intelligent manufacturing concepts
and maximum modularity of the entire
machining center.
Complex structure parts
As the area of machining technology is
rapidly developing, the demands by innovative
designers upon manufacturing experts
are increasing as well. Particularly for the
construction of modern aircrafts more and
more complex structure parts are manufactured
from aluminum and titanium.
This requires a machining center with
excellent static and dynamic qualities and
high-performance milling spindles. Only
these characteristics guarantee an eco-
nomical high-performance machining which
saves time and also simplifies the produc-
tion process. The STC 800 meets these
criteria to perfection.
Impellers and blisks
When completely machining modern impel-
lers and blisks made of difficult-to-machine
materials, precision and high availability are
essential. By virtue of decades of experience
in the 5-axis machining of flow surfaces we
have the necessary expertise to support you
in every respect, whether in the programming
of our own specially developed CAM
software or in the choice and development
of suitable tools.
General production technology
The STC 800 is perfectly suited for the
machining of complex workpieces, because
the pieces can be machined on inclined
planes as well. The machine allows the use
of vertical milling heads, overlong tools and
bridge-mounted tools with large diameters.
Rotating axes and tilt heads work very
precisely and allow the economical machin-
ing from five sides in one or several setups.
Impeller Structure part of an aircraft door

Aircraft engine case
Precision machine tool components
Z
B
A
Axis configuration of the STC 800
Y
X
STC Series

Your investment in a modern machin-
ing center should provide a high return
on investment. With its unequalled
technical benchmark figures the STC
800 offers the security to be able to
react very flexibly to new technical
challenges in production. Investment in perfection
Machine systems for the demands
of tomorrow
If production facilities in the high-tech sec-
tor want to be successful today, they need
to provide a high amount of flexibility. The
production cycles are growing shorter and
an ever-increasing amount of component
variants has to be produced. This is were
the STC 800 offers particular advantages as
it was specially designed to accommodate
the continuously changing demands of pro-
duction technology. Thanks to its modular
machine concept, it is able to meet all tech-
nical requirements very flexibly.
Outstanding process stability
The STC 800 has an extremely rigid frame
structure which has been calculated and
optimized by using the FE method. This is
one of the reasons why it has excellent static
and dynamic characteristics and offers an
outstanding process stability. Even under
extreme cutting conditions, such as when
machining difficult-to-machine materials,
the drive power can be exploited to the full.
The stable, low vibration machining guaran-
tees long tool life which directly results in
increased productivity and profitability.
Complete machining for increased
profitability
On the STC 800 workpieces can be
machined in one setup. Using complete
machining the time and expense required
for setting the workpieces up is reduced
to a minimal level. The resulting reduced
throughput times decrease logistics costs
and increase the efficiency of the machine.
Extremely fast chip removal
The wide chip conveyor which is located
centrally under the machine bed ensures
an optimal chip flow even in case of dry
machining. The free chip flow ensures undisturbed
high-performance cutting.
Shorter machining times and minimal
non-productive times
A wide selection of high-performance spindles
for different speed ranges, torques and
powers is available. This allows the use of
the very latest tools. Non-productive times
can be reduced thanks to fast rapid traverses
and the modularly expandable tool and
workpiece handling which has been tried
and tested in the automobile industry.
High availability
The profitability of a machining center is
determined not solely by its performance
but also by a maximum availability and total
functional reliability.
That is why StarragHeckert relies on dependable,
often-tried subassemblies with highquality
components. By using fixed sheet
and apron conveyor covers maintenance
costs can be reduced additionally.
To minimize downtimes, StarragHeckert has
developed the graphic-aided diagnostic
system SAM. The Software allows to localize
the root causes of errors in a very short
time and diagnostic messages help users to
eliminate these errors.
The documentation is completely incorporated.
In addition, our remote diagnostic
system assures immediate online support
from our experts.

With its user-friendly and modern compact design
the STC 800 sets new standards.
Moreover, a maintenance service manager
is integrated to support users and SMS or
e-mail notifications serve to minimize losses
of production.
Partnership for problem solving
StarragHeckert provides you individually
adapted solutions for your specific produc-
tion requirements. Our experienced team of
technical experts will help you to set new
production milestones.
Ranging from the calculation of the production
time, the choice of the optimal tool
to complete programming and production
of pilot runs in our Center of Production
Excellence. We will support you in every
respect to ensure a trouble-free start of
production.
Of course, we are also ready to prove and
document the capabilities of the STC 800
by trial machining. Productivity, precision,
flexibility and reliability are more than just
catchwords for StarragHeckert.
STC Series

We only judge new technological
solutions by the benefits they bring
you as their user in practice, and
this over the course of many years.
Therefore, we do not rely solely on
revolution but rather on well-targeted
evolution when we develop
new solutions.
Construction principle
- Thermo-symmetrical design
- Elements of closed welded and cast design
- Extremely stable and low vibration
- Optimized using the FE method
- Compact design for complete transport and low space requirement
- Broadly supported rotary table carriage with Gantry drive
- High running and positioning accuracy
- Short positioning and start-up times thanks to high acceleration
Table assembly
- CNC rotary table as fourth simultaneous axis
- Pallet interface with clamping cones
- Concentric, water-cooled direct drive
- High driving torque
- Hydrostatic B axis clamping
- Fast rotating rotary table
Evolution of technology
Axis drives and guides
- Highly dynamic drives with digital control and regulating system
- High feed forces for heavy-duty cutting
- Low-maintenance three-phase servo motors
- Belt drive as pre-stage
- Pretensioned, ground and backlash-free ball screws
- Absolute optical measuring systems on all five axes
- Drives and guides outside of the range of operation
- Large dimensioned, stiff and precise linear guides with
recirculating roller packs
- Pretensioned guide carriages guarantee high machining quality
and long-term accuracy
A axis milling spindle
- Simultaneously controlled fifth CNC axis
- Stable roller bearings on both sides
- High positioning accuracy through a direct optical distance measuring system
- Low-wear worm drive with steel-on-steel elements, coated
- High driving torque
- Hydraulic axis clamping and axis dampening
- Even suitable for heavy-duty cutting

Motor spindles
- Concentrically mounted water-cooled high-performance synchronous /
asynchronous motor (15‘000 / 24‘000 rpm)
- Oil-air lubrication directly through the outer ring (direct lubrication system)
- Variable hydraulic bearing pretensioning
- Vector control with constant torque up to the corner speed, thereafter constant power
- Internal coolant supply as standard
- Sensors for bearing temperature, thermal spindle growth with compensation
and in-process vibration monitoring
Chip removal
- Safe and quick chip removal through wide chip
conveyor in traverse bed
- Integrated washing system with workpiece shower
- Suitable for wet and dry machining
Tool handling
- Chain magazine with 60 and 80 pockets
- Tower magazine with up to 240 tools for ISO and HSK tapers
- Chain line magazine with up to 240 tools for HSK A63
- Magazine loading during machining process
- Fast twin arm tool changer
- Tool breakage detection via laser within the working area as option
- Optional: tool coding
Workpiece handling
- Rotating load/unload station, 4 x 90° indexing
- Optional hydraulic or vacuum coupling device with
a maximum of 6 connections
- Quick pallet change with lift-rotate system
Control and system capability
- NCU with the highest extension stage
- Contour fidelity during high-speed machining through look-ahead feature
and dynamic preselection
- Drive parameter adjustment depending on the machining
- Graphical diagnostic system «SAM» and remote service
- Control cabinet with air conditioning unit
Coolant supply
- Vacuum fleece band filters or alternatively a
low-maintenance backflush turbo filter
- Internal cooling, programmable in 10 bar steps
up to 70 bar
- Optional coolant temperature regulation
Gear-driven spindles
- Drive via two-step gearbox
- Torque 940 Nm
- Large dimensioned precision
hybrid bearings
- Oil-air lubrication system
- Internal coolant supply as standard
System extension and system capability
- Expansion to a machining cell with linear
or circular pallet pool
- Linking of several machines with single
or multi-storey linear pool
- Including system control software

Technical Data
1 Working area
2 Set-up station
3 Swarf discharge
4 Tool magazine
5 Operator panel
6 Service Assistant Module
7 Electro cabinet
8 Coolant supply unit
9 Main switch
10 Hydraulic tank / Compressor cooling system
E Electric power supply
P Air supply
Main operating position
Height:
4520 mm
178 inch
STC 800/130
Pallets
Pallet clamping surface according to DIN 55201 mm/inch 800×800 (800x1'000) / 31,5x31,5 (31,5 x 39,4)
Max. work piece weight
Working area
kg/lbs 2'000 / 4'410
Column linear travel X mm/inch 1'450 / 57,1
Main spindle vertical travel Y mm/inch 1'200 / 47,2
Table traverse travel Z mm/inch 1'300 / 51,1
Swing diameter mm/inch 1'400 / 55,1
A-axis degrees -100/+60
B-axis
Feed rate/Rapid traverse rate
degrees endless
X / Y / Z m/min 60 / 60 / 60 –– 2362,2 / 2362,2 / 2362,2 ipm
A-axis rpm 6 (12)
B-axis
Main spindle
rpm 60
Gear driven spindle, max. speed rpm 8'000
Max. power at 100% duty cycle kW/Nm 37 / 940 –– 49,6 hp / 693,3 lbf-ft
Tool taper ISO 50* (HSK-A100)
Motor spindle 1, max. speed rpm 15'000
Max. power at 100% duty cycle kW/Nm 60 / 174 –– 81,6 hp / 128,3 lbf-ft
Tool taper HSK-A100
Motor spindle 2, max. speed rpm 24'000
Max. power at 100% duty cycle kW/Nm 70 / 60 –– 93.9 hp / 44,3 lbf-ft
Tool taper HSK-A63
Tool handling Chain Tower In-Line Chain
Tool taper HSK-A100/ISO 50* HSK-A63 HSK-A100/ISO 50* HSK-A63
Number of tool locations, 2 (3/4) towers 60 (80) 60 (80) (120 / 180 / 240) (180 / 240)
Max. tool ø (full occupancy) mm/inch 125 / 4,92 80 / 3,15 110 / 4,33 80 / 3,15
Max. tool ø (free adjacent pockets) mm/inch 325 / 12,8 160 / 6,3 250 / 9,84 160 / 6,3
Max. tool ø, oversized tools, 4 tools per tower (only 3/4) mm/inch – – 325 / 12,8 –
Max ø Bridging tools mm/inch 500 / 19,68 – 500 / 19,68 –
Max. tool length, standard mm/inch 630/550/24,8/21,65 400 / 15,74 450 / 17,7 400 / 15,74
Max. tool length, over length for 15 tools (only possible
in tower 1, reduces capacity by 15 locations)
mm/inch – – 630/550/24,8/21,65 –
Max. tool weight kg/lbs 35 / 77 10 / 22 35 / 77 10 / 22
Max. tilting moment Nm/lbf-ft 50 / 36,8 10 / 7,36 50 / 36,8 10 / 7,36
Positioning accuracy according to VDI/DGQ 3441 Axes X / Y / Z Axes A / B
Positioning uncertainty (P) 0,007 mm / 0,00028 inch 7 sec
Positioning scatter (Ps) 0,005 mm / 0,00020 inch 4 sec
Reversal error (U)
Dimensions and weight
0,004 mm / 0,00016 inch 3 sec
Weight t/lbs 31 / 68'350
Space requirement for basic machine L x W x H mm/inch 8930x5410x4520 / 352x213x178
* ISO 7388/1
5410 mm (60 Wz)
213 inch (60 tools)
2
Values in brackets = (option) All machines can be used as a stand-alone machine, as a manufacturing cell
or be integrated into a flexible manufacturing system.
1
5
4
6
8930 mm
352 inch
9
8
7
10
E
P
3

StarragHeckert stands for increased
precision and productivity
StarragHeckert is a leading company in the field of production technol-
ogy. We offer our customers a broad range of highly sophisticated pre-
cision milling machines, comprehensive engineering and software solu-
tions for process optimization and a perfectly adapted range of special
tools and services.
Our demanding customers come from different high-tech industries such
as aviation, power generation, vehicle industry and mechanical engineer-
ing. Using state-of-the-art technology and all our expertise we will support
you to produce in a more productive and efficient, a more precise and
innovative manner today and in the future.
The StarragHeckert group has production sites in Germany, Switzerland
and Great Britain as well as distribution and service companies in China,
the USA, France, Great Britain and Russia.
STC Series

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Germany
Phone +49 371 836 22 88
Fax +49 371 836 23 98
marketing@starragheckert.com
www.starragheckert.com
TTL
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Thame Road
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United Kingdom
Phone +44 1844 296650
Fax +44 1844 296651
enquiries@ttl-solutions.com
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