Replaceable head drills

Replaceable head tool systems have become an indispensable part of modern manufacturing. After all, increasing raw material prices, streamlining of warehouses and consideration of life cycle costs are reason enough. 

Our two replaceable head systems, the TTD replaceable head drill and the EXD indexable insert drill, are highly productive and are not inferior to monolithic tools in any way – on the contrary.

Our focus during development was on highly precise, very stable connections that enable optimum torque transfer while achieving high change and radial run-out accuracy. Our replaceable head drills thus operate on the performance level of a solid carbide drill – at lower costs and with simple handling.

The latest manufacturing technologies such as additive manufacturing make it possible to produce the EXD from a diameter as small as 8.00 mm with interior cooling.

Our complete product range

The PDF versions of our product catalogues are available to download from the Info Centre.

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Our current highlights

Cost-effective replaceable head system with considerable increase in performance


We optimised the Type01 replaceable drill head for machining steel significantly in 2019.
The innovative MxP coating, an optimised corner protection chamfer and perfectly tailored cutting edge preparation yield long tool lives and top bore quality.


At a glance

  • Available in a diameter range from 12.00 to 45.00 mm and in the lengths 1xD, 3xD, 5xD, 8xD and 12xD
  • Innovative MxP coating
  • Optimised corner protection chamfer
  • Perfectly tailored cutting edge preparation

Your advantages

  • Long tool lives thanks to higher wear resistance
  • Good positional accuracy
  • High radial run-out accuracy

Stable connection and simple clamping system


Excellent chip formation and reliable chip removal are the key features of the EXD indexable insert drill.
Numerous indexable insert changes per tool holder are possible because the basic holder is not washed out.
The insert connection has a particularly simple, effective construction. A bolt routed laterally through the indexable insert stably clamps the indexable insert in the prismatic holder. The tool achieves high cutting data and bore quality as a result.

We produce holders for diameters ranging from 8 mm to less than 13 mm with the aid of additive manufacturing. This method makes it possible to manufacture these small tool bodies with spiral cooling channels. Compared with the central coolant supply with deflections, it allows us to increase the coolant flow by 100%, specifically thanks to the cooling channel profiles that deviate from a circular form.

At a glance

  • Available in a diameter range from 8.00 to 50.00 mm
  • Holder lengths 1.5xD, 3xD, 5xD, 8xD and 12xD
  • Indexable inserts for steel, stainless steel, aluminium and cast workpiece materials
  • Special surface treatment

Your advantages

  • Error-free indexable insert installation
  • Optimum chip formation and chip removal
  • One holder for all bore geometries
  • Particularly durable holders
  • Easy handling: insert change on the machine