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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 movement up to approx. 500 mm
Machining stroke / Shift distance: approx. 400 mm
Max. spindle power: 16 kW
Max. rotational speed of workpiece spindle: 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 gear cutting:
The cutting edges are cooled and lubricated during the skiving process, significantly reducing thermal stress on the tools.
Generated chips are reliably removed and not drawn back into the process.
Optimal chip evacuation leads to improved gear quality and surface finish.

LHStation & LHMobile Operating Concept
Liebherr intelligently separates programming and machine operation into two units:
LHStation (Fixed Operator Panel/Monitor):
- Large screen area for data entry and process monitoring
- Multi-touch surface with additional haptic control elements
- Increased operation speed and process safety
LHMobile (Mobile Handheld Device):
- Standard 10" multi-touch display
- Context-sensitive displays (PLC/NC keys, program status, notifications)
- Wired signal transmission for maximum safety during setup
- Ideal for ergonomic, operator-friendly handling directly at the machine

Skiving³ – Overview of Advantages
Machine:
- Very rigid machine structure with cast bed to absorb process forces
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- Ring loader concept for fast workpiece change
- Tailstock for shaft machining and optimal workpiece clamping
- Optional chamfering during machining
- Fracture-proof enclosure, suitable for dry and wet machining (oil or emulsion)

Tooling:
- Design and manufacture 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 ensure process reliability

Machine Concept – Efficiency through Gear Skiving
Gear manufacturers are seeking alternatives that:
- Are more productive and cost-effective than gear shaping
- Are more flexible than broaching
The LK 200 addresses these needs precisely:
The foundation is the high rigidity of the machine bed and the skiving head (special bearing concepts, including support for longer tool holders – critical for internal gear cutting).
Combined with its robust enclosure, the machine is suitable for both dry and wet machining.
The integrated tailstock unit makes the system universally applicable:
- External and internal gear cutting
- Shafts and short gears on a single machine
By combining machine, tooling, and process (Skiving³), the LK 200 offers a complete, harmonized solution for highly productive gear skiving.

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