Liebherr LC 300
Key Specifications
Max Workpiece ⌀
machine type
max module
hob head speed
cutting process
drive type
Overview
The Liebherr LC 300 is a CNC gear hobbing machine from the German manufacturer Liebherr, designed for high-speed dry or wet hobbing of spur and helical gears. Liebherr is one of the top gear machine manufacturers globally, and the LC 300 represents their compact hobbing platform for gears up to 300 mm diameter.
The LC 300 handles workpiece diameters up to 300 mm with a maximum module of 5 mm. The hob head supports speeds up to 3,000 rpm for carbide hobs in dry cutting applications. Dry hobbing eliminates coolant costs and environmental concerns while achieving excellent surface finish.
The machine features direct-drive torque motors on the table and hob head for precise synchronization without mechanical gear trains. Automatic hob shifting extends tool life. Three or four axes of CNC control enable crowning, taper, and twist corrections.
Runs on Siemens 840D sl with Liebherr LH Gear Tec software. Automation options include integrated loading systems and robotic interfaces. Machine weight is approximately 7,000 kg.
The LC 300 competes with Gleason-Pfauter hobbing machines, Mitsubishi Heavy Industries hobbers, and Kapp Niles hobbing platforms.
New machines price $350,000-$500,000. Used trade $175,000-$300,000.
Full Specifications
| Parameter | Value |
|---|---|
| Machine Type | CNC Gear Hobbing Machine |
| Max Workpiece Diameter | 300 mm (11.8 in) |
| Max Module | 5 mm |
| Hob Head Speed | Up to 3,000 rpm |
| Cutting Process | Dry or wet hobbing |
| Drive Type | Direct-drive torque motors |
| Hob Shifting | Automatic |
| Gear Types | Spur and helical gears |
| Cnc Axes | 3-4 axes |
| CNC Control | Siemens 840D sl with Liebherr LH Gear Tec |
| Machine Weight | 7,000 kg (15,432 lb) |
| Power Supply | 400V, 3-phase |
Specifications sourced from liebherr.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Direct-drive torque motors eliminate mechanical gear trains for precise synchronization
- Supports high-speed dry hobbing with carbide tools for clean, efficient production
- Handles gears up to 300 mm diameter and module 5
- Automatic hob shifting maximizes tool life
- Liebherr LH Gear Tec software simplifies gear programming
- Compact footprint for a gear hobbing machine of this capacity
Limitations
- Limited to 300 mm diameter and module 5 -- not for large gears
- Dry hobbing requires carbide hobs which are more expensive than HSS
- $350,000+ investment is significant for smaller gear shops
- Liebherr gear machine service is concentrated in major manufacturing regions
- Specialized machine with limited resale market outside gear manufacturing
Best For
Frequently Asked Questions
01
New $350,000-$500,000. Used $175,000-$300,000.
02
Both. The LC 300 supports dry hobbing with carbide hobs (faster, cleaner) and wet hobbing with HSS hobs.
03
300 mm diameter, module 5.
04
Torque motors directly drive the table and hob head without mechanical gear trains, eliminating backlash and improving gear quality.
05
German manufacturer and one of the global leaders in gear cutting machines alongside Gleason and Klingelnberg.
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