The tap holders of this type are designed for cutting big threads. Furthermore, the drilling or countersinking operation may be executed without changing the tap holders by blocking the length compensation via a locking screw.

The advantages resulting from this are:

Small deviation of the coaxiality between drill hole and thread.
No wast of time for tool changes, with according reduction of costs.

Tap Adaption by Quick-change Adapters

The change of the tools is executed via quick-change adapters type HE.

Specifications

Both sizes are equipped as follows:

Overload Clutch

Integrated overload clutch with maximum torque HF20: 1300 Nm,
HF30: 3000 Nm.

Length Compensation on Compression and Tension

Integrated length compensation on compression and on tension.

On option available with

Internal Coolant Supply

Coolant Pressure

On machine tools where the spindles are equipped with internal coolant/oil supply, the thread cutting cycle is especially efficient if the coolant/oil comes out through an axial borehole in the tap or along the tap flutes. Advantages:

Optimal lubrication
Improvement of the thread quality
Washing the chips out of the core hole.

To ensure a trouble free function of the length compensation, the according coolant pressures should not exceed the recommended limits.