Kern Fortis HD

More than just a machine

The Kern Fortis HD is designed with the aim of being the most accurate 5-axis machine for high-precision, series-stable machining of small to very large workpieces with high productivity as well as strong performance in preliminary rough machining.

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At a Glance

Compact design thanks to integrated hybrid unit
Maximum machine stability thanks to extended Kern temperature management
Highly dynamic acceleration and maximum travel speed thanks to transmission-free drive system
Highest possible quality and freedom from wear thanks to innovative, newly dimensioned Kern micro-gap hydrostatics
Maximum accuracy with minimum warm-up time thanks to topology-optimized aluminium axes
Integrated tool management system with exceptionally high tool density and minimal footprint
Certified interfaces for additional accessories and automation systems

Product Details

Triaxial system and temperature management in combination

The combination of micro-gap hydrostatics and lightweight aluminum structural components with the linear direct drives creates a unique, uncompromising synergy in the Kern Fortis HD three-axis system. With additional targeted cooling and continuous monitoring, the machine remains in thermal equilibrium - for consistently high quality even under changing ambient conditions.

Specifications

Axes: travels
X-axis	780 mm
Y-axis	420 mm
Z-axis	450 mm
B-axis	-120° to +120°
C-axis	360° endless
Axes: Dynamics
v_max X, Y, Z	60 m/min
a_max X	10 m/s²
a_max Y	10 m/s²
a_max Z	10 m/s²
Automatic tool changer HSK E40
349-fold
Max. Tool diameter for automatic change	70 mm
Max. Tool length for automatic changer incl. tool holder	245 mm
Automatic tool changer HSK A63	154-fold
Max. Tool diameter for automatic change	190 mm
Max. Tool length for automatic changer incl. tool holder	<390 mm
Tool changer HSK 63
154-fold
Max. Tool diameter for automatic changer	190 mm
Max. Tool length for automatic changer incl. tool holder	< 390 mm
Numeric control
Heidenhain TNC7
Spindle HSK E40
n_max	45,000 1/min
n_max	50,000 1/min
Torquemax (S1)	7,5 Nm
Powermax (S1)	18,5 kW
HSK 63 work spindle
n_max	24,000 1/min
Torquemax (S1)	90.7 Nm
Powermax (S1)	38 kW
Clamping system on 5th axis
EROWA Power Chuck P

Automation Options

Kern CNC machining centers have standardized interfaces for all common automation systems. The ability to integrate a Kern into any existing production system means that our machines offer maximum flexibility and reliability for your automation task.

The automation of a Kern machine for tools and workpieces does not affect your service work in any way; the door to the machine room remains accessible throughout.

Your advantages

24/7 reliable serial production
Significant increase in sales in the "ghost shift"
One operator for many machines

Integrated Tool Changer

Innovative implementation and proven technology
The tool magazine of the Kern Fortis HD is based on the proven Micro platform and combines this with new, high-performance components. The integrated 2-axis system achieves an exceptionally high tool density with a minimal footprint.
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Your advantages

Space-saving sliding doors for optimum accessibility
External and internal steps for ergonomic insertion and removal of tools
Glass elements in the doors and integrated lighting enable visual monitoring during operation
Compact design with high tool capacity on a minimal footprint
Seamless connection of the automatic tool changer to the machine control system

Precise Temperature Stability

Precision starts with the temperature, because the same applies today as in the past: The main factors influencing the working accuracy of precision milling machines are thermal effects.

For this reason, Kern continues to focus on high thermal stability in its machine design as the basis for precision, process reliability and high productivity. The Kern Fortis HD has been consistently designed for active, multi-stage temperature management - for constant performance even under demanding conditions.
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Stage 1: In the first stage, heat is dissipated directly at the source, i.e. at the solenoid coils of the linear motors, via a separate cooling circuit.
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Stage 2: In the second stage, the heat from the entire magnetic track is dissipated.
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Stage 3: The third stage prevents heat transfer from the drives to the structural components of the machine.
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Stage 4: In the fourth stage, the structure itself is tempered, thereby eliminating disruptive influences from operation.
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All four stages of axle temperature control are supplied by the extended Kern temperature management system. This is located in the integrated hybrid unit.

Technology Combination

Kern micro-gap hydrostatics

The heart of the system remains micro-gap hydrostatics in a three-axis system, which has already proven itself in the Kern Micro HD. True to Kern 's development philosophy, this technology has not simply been scaled up, but taken to a whole new dimension through further innovations. The technology of the Kern Fortis HD enables the unrivaled combination of:
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Stiffness combined with high dynamics
Temperature stability and working accuracy on the workpiece
Wear-free and continuously high quality

Topology-optimized aluminium axes

The Kern Fortis HD relies on a three-axis composite with structural components made of aluminum - and for good reason: because it offers the perfect balance of weight, rigidity and thermal behavior - and thus creates the basis for highly dynamic, precise and durable axes of motion.

Customer benefits: Maximum accuracy with minimum warm-up time for the life of the machine.

Drive technology

In combination with the thermal design of the Kern Fortis HD, the new linear motors are among the most stable and powerful axis drives. The drive technology of the Kern Fortis HD sets new standards and impresses with its properties:

Fast: Transmission-free drive system for highly dynamic acceleration and maximum travel speeds.
Precise: High-performance measuring systems, optimized control and reproducible mechanics for maximum positioning accuracy and the best possible surface quality.
Stable: Consistent expansion of axle temperature control to improve thermal behavior.

Related Offers

Process Development

We offer not "only" machines, but also the manufacturing process for your parts.

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Training Center

As an authorised training partner of Heidenhain, we offer a wide range of Heidenhain courses.

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Machine Support

Our service experts will support you in all matters - fast and efficient. You can rely on us.