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Thread tools \ Technical introduction – thread tapping

                       Screw tap colour ring system












         the screw tap colour ring system allows the user to quickly and reliably identify the correct screw tap for the task. each colour ring represents an ideal chip geometry
         for the material being processed. the colour system is based on the ISO code for indexable inserts and can therefore be understood worldwide. very universal tools
         do not have a ring. the graphic below shows the various geometries and their purpose.
           UNI MAX    UNI      UNI     high-strength  non-ferrous metals  stainless steel  cast and  titanium and  hard
                   up to 1000 N/ up to 1000 N/ above 1000 N/mm 2              short-chipping  nickel alloy
                      mm 2     mm 2                                           non-ferrous
                                                                                metals





















         each material has its specifi c characteristics and needs individual chip geometries. this means that the chip
         angle, clearance angle and guide length must be set to achieve an optimal result. stainless steels and steels
         need positive cutting to reliably penetrate the material and safely remove the chips. for processing very
         hard materials, the cutter must be as stable as possible.





                       Clamping device recommendation for screw taps

                                      Length compen-  Synchronous                    Hydro-expansion   Surface

                                       sation chuck  tapping chuck  Collet chucks  Shrink-fit chucks  chucks  chuck








         Length compensation range       9-15 mm     0.5-1 mm      0          0           0           0
                                                                 Stable
                                                                                                    Stable
                                                                                        Stable
                                                                            Stable
         Suitable for usage conditions   Unstable     Unstable-stable   (synchronous)  (synchronous)  (synchronous)  (synchronous)
                                                   (synchronous)
         Suitable for conventional machines
         Suitable for CNC machines
         Suitable for conventional   conv.
         screw taps (low relief
         grinding)
         Suitable for standard   CNC/conv.
         screw taps (medium relief
         grinding)
         Suitable for synchronous   CNC/Synchro
         screw taps
         (high relief grinding)
           = very well suited     = suitable          = limited suitability
       Source: Hahn+Kolb Werkzeuge GmbH
       Technical data subject to change.             www.iconridge.com
       Availability subject to country specific rules and regulations.                          106

   0195_EN_2018_KERN[21846985]-i.indd  195                                                            12/17/2018  3:31:47 PM
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