Fine boring tool
ø 6 - 150 mm Johne & Co. Präzisionswerkzeuge

Our high-precision and robust fine boring head has been tried and tested a thousand times. A simple design, internal coolant supply and hole-type inserts provide reliable function and easy handling:

* No "stick/slip" when adjusting in both directions
* Clamping without dimensional change at the cutting edge
* Large pre-adjustment range
* Large fine adjustment range
* No parallax errors when reading the scales

The diameter ranges are coordinated in such a way that boring tools with the same cutting features can always be used in production.
The range is generally made up of three basic modules - deviations are possible according to the system.

Fine boring heads
Boring range: 6 - 150 mm
Fine adjustment: Ø 1/100 mm per graduation line
Reversal error: less than 2µ (2/1000 mm)