Self Reversing Tapping Attachment TA

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Application: tapping, roll forming on machines with a driven spindle and manual feed
Machine type: drilling machines, machines with driven spindle


  • quick change system for tap adaptors
  • exchangeable, screwed-in shank
  • double feed rate on reverse motion
  • no built-in safety clutch in the unit
  • free of maintenance
  • unit can be used for right and left handed threads
  • integrated reversible gear


  • quick tool change – no additional tools required for the tool change
  • higher flexibility – by changing the shank, the unit can be used on different machines with other spindle locations
  • shorter processing time due to higher feed rate on reverse motion – shorter processing time

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This self reversing tapping attachment is designed for use on drilling machines which have only manual feed facilities and which do not have a reversible spindle. The tool design is simple, effective, and is virtually maintenance free. The unit is fitted into the machine spindle by virtue of its morse taper shank, with the stop arm located against the column of the drilling machine to ensure effective and positive action. The design of the units is such that it can be used for either right or left handed tapping operations.

The design of the unit is such that tapping and reversing is possible without changing the direction of the machine spindle.
The unit automatically changes direction when the required thread depth has been achieved. The unit accepts both Bilz WE and WES tap adaptors which facilitate quick tap change, a separate tap adaptor is required for each size of tap shank. The use of WES tap adaptors gives additional security against tap breakage by means of the clutch mechanism.

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