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Liebherr LK 200

LIEBHERR LK 200 – CNC Gear Skiving Machine
Key Technical Data
CNC Control: Siemens HMI (Liebherr LHStation / LHMobile operating concept)
Max. Module: approx. 3.0 mm
Max. Workpiece Diameter: approx. 200 mm
Max. Workpiece Weight: approx. 25 kg
Table Diameter: approx. 285 mm
Axial Travel:
Axial travel up to approx. 500 mm
Machining Stroke / Shift Distance: approx. 400 mm
Max. Spindle Power: 16 kW
Max. Workpiece Spindle Speed: 3,000 rpm
Max. Feed Rate (radial): 7,500 mm/min
Hob/Tool Speed: up to 4,000 rpm
Max. Tool Diameter: approx. 150 mm

Wet Machining
Wet machining offers significant advantages, especially for internal gearing:
- Cutting edges are cooled and lubricated during the skiving process, significantly reducing thermal stress on the tools.
- Swarf is reliably evacuated and not pulled back into the process.
- Optimal chip evacuation leads to improved gear and surface quality.

Operating Concept LHStation & LHMobile
Liebherr intelligently separates programming and machine operation into two units:
LHStation (fixed operator panel/monitor):
- Large display area for data input and process monitoring
- Multi-touch interface with additional haptic controls
- Increased operating speed and process safety
LHMobile (mobile hand-held device):
- 10" multi-touch standard
- Context-sensitive display (PLC/NC keys, program status, messages)
- Wired signal transmission for maximum safety during setup
- Ideal for ergonomic, operator-friendly handling directly at the machine

Skiving³ – Overview of Advantages
Machine
- Highly rigid machine design with cast bed to absorb process forces
- Ring loader concept for rapid workpiece changeover
- Tailstock for shaft machining and optimal workpiece clamping
- Optional chamfering during machining
- Break-proof enclosure, suitable for dry and wet machining (oil or emulsion)

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Tool
- Design and manufacturing of conical and cylindrical skiving tools
- Process-optimized tool design for each component
- Tools available in PM-HSS and solid carbide

Process
- Comprehensive process analysis and simulation to determine optimal cutting data
- Use of technology applications for customer-specific process optimization
- Collision analysis with calculation software to safeguard the process

Machine Concept – Efficiency Through Gear Skiving
Gear manufacturers are seeking alternatives that are:
- More productive and cost-effective than gear shaping
- Simultaneously more flexible than broaching
The LK-200 addresses exactly these requirements:
The basis is the high stiffness of the machine bed and skiving head (special bearing concepts, also for longer tool holders – essential for internal gear cutting).
Combined with a break-resistant housing, the machine is suitable for both dry and wet machining.
The integrated tailstock unit makes the system universally usable:
- External and internal gearing
- Shafts and short gears on one machine
Through the combination of machine, tool, and process (Skiving³), the LK 200 offers a complete, fully integrated solution for high-productivity gear skiving.

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