The Global Standard in Gear Shaping Precision
Top-tier workshops prioritize these brands for their rigidity:
• Fellows (USA): The pioneer (10-2, 10-4, and 20-4 models).
• Lorenz (Germany): High-precision European engineering.
• Liebherr: Advanced CNC shaping centers.
• Mitsubishi: Fast and reliable Japanese gear shapers.
The Fellows 10-4 is a world-renowned gear shaper designed for accuracy and high metal-removal rates. Unlike hobbing, the shaping process uses a reciprocating cutter that mimics the mating gear’s movement. This makes it indispensable for cutting gears with shoulder interference or internal teeth where a hob cannot reach. Its mechanical simplicity combined with heavy-duty casting ensures decades of reliable service in aerospace and automotive gear production.
| Parameter | Technical Details |
|---|---|
| Max. Pitch Diameter (External) | 254 mm (10 inches) |
| Max. Pitch Diameter (Internal) | 254 mm (10 inches) |
| Maximum Face Width | 101.6 mm (4 inches) |
| Maximum Diametral Pitch | 4 DP (Module 6.3) |
| Stroking Speed | Up to 800 SPM (Strokes per minute) |
| Machine Total Weight | approx. 5,100 kg |
Do you have a Fellows, Lorenz, or Liebherr gear shaper for sale? Register for free on Nikgi and showcase your machine to a global audience of gear specialists.
● Nikgi Industrial Directory Showcase Fellows 10-4 / 20-4 Series The Global Standard in Gear Shaping Precision 🎯 What is it used for? Internal Gears: The primary tool for cutting internal splines and teeth. Cluster Gears: Machining gears where a larg...

