External threading tool

thread-whirlingfor lathesrigid

Overview
The automatic CERGIL External Threading Heads are engineered for high-efficiency production of external threads and for peeling operations. Manufactured from hardened and ground steel, they provide precision and repeatability in industrial turning environments.

Tools supported

• Threading tangential chasers – form ISO, Whitworth, UNC, NPT and other standard thread profiles; suitable for metals and plastics.
• HSS blades and carbide inserts – enable high-speed peeling and turning to prepare parts for thread rolling.

Strengths

• Automatic opening – rapid release of the produced thread for continuous production.
• Cost efficiency – low production costs due to re-sharpenable tools.
• High production speed – single-operation thread production, including coarse pitches (example: 6 mm pitch).
• Versatility – wide range of chaser-holders for different diameter and pitch combinations.
• High mounting rigidity – supports use of carbide tools for CNC peeling operations.
• Quick assembly – fast tool installation and thread diameter adjustment.

Applications and capabilities

• Production of external threads across a wide diameter and pitch range.
• Compatible with CNC lathes and semi-automatic or automatic turning equipment.
• Suitable for a wide variety of materials, including all common metals and plastics.

Technical specifications

• Material: hardened and ground high-quality steel.
• Supported tool types: tangential threading chasers; HSS blades; carbide inserts.
• Supported thread profiles: ISO, Whitworth, UNC, NPT and other standard profiles.
• Thread range: M6 to M114 (approx. 1/4 to 4 in).
• Single-operation capability: can produce threads in one pass (example: 6 mm pitch).
• Tool-holder features: wide range of chasers-holders for various diameter/pitch combinations; high rigidity for carbide use on CNC machines.
• Main benefits: automatic opening, high production speed, cost optimization, fast assembly, versatility across profiles and materials.

Documentation
Technical file (PDF) available.