Thread Rolling

Habegger SA

Through our partner Habegger SA, Alouette offers Adjustable Thread Rolling Dies, Knurling Dies, and Burnishing Dies with their respective holders for both CNC & Cam machines. We also offer Habegger Guide Bushing and Guide Bushing repair kits.

Thread Rolling Dies

Thread diameters from 0.35 to 14.00 mm
UN Series from 000-120 to 9/16”-32
Pitch from 0.09 to 1.25 mm 120 TPI to 24 TPI
Dies are available in LH for most all sizes
Non-adjustable dies also available for large batch jobs

Advantages of thread rolling:

  • Better thread quality
  • High machining regularity
  • Increased thread resistance
  • Reduced breaking points
  • Better surface values on the thread flanks and on the thread root

Thread Rolling Instructions

Compensating Holder

Fixed Holder

Knurling Dies

Diameter after knurling: from 0.60 to 14.20 mm
Pitch from 0.13 to 1.00 mm according to diameter
Sizing of knurling dies are available in tenths of a millimetre.

Advantages of Knurling Dies:

  • No untrue workpiece after the knurling operation
  • Very regular machining
  • No radial effort exerted on the collet or guide bush
  • Possibility to knurl diameters smaller than 1 mm
  • Better knurling quality

Knurling dies are used for straight or crossed knurling (30° or 45°). They work without radial effort. No pressure is exerted on the workpiece, even with the smallest diameters. The three knurls forming the teeth assure a high quality of the job and the long life of the die.

Diameter before knurling increases by 25 to 35% of the pitch value, according to the machined material. These values are in direct relation with the material resistance.

Knurling Die Instructions

Burnishing Dies

Diameter after burnishing: from 0.50 to 12.40 mm
The sizes of the burnishing dies are available per tenths of a millimeter
The burnishing operation improves the surface finish, but does not influence the diameter

Advantages of Knurling Dies:

  • Good surface finish
  • No radial effort exerted on the collet or guide bush
  • Possibility to burnish diameters smaller than 1 mm.

These burnishing dies permit to smooth the diameters. They work without radial efforts and no pressure is exerted on the workpiece, even for small diameters. The three rollers will give a better surface quality, without improving the turning geometry, however. The rollers will just follow that geometry. It is therefore important to have a good tuning job done, as far as concentricity and cylindrical shape are concerned.

The peripherical speed of the workpiece must be about 20 meters/minute. The speed is smaller when the material to be smoothed is very hard. The indicative value for the feed is 0.2 to 0.5 mm/revolution.

Burnishing Die Instructions