Finish boring tools & adaptors

Standard fine boring head Johne & Co.
Standard fine boring head Johne & Co.

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) 

Fine boring head 6 - 28 mm

Starflex
HSK

Fine boring head Starflex 22 - 88 mm / HSK 22 - 150 mm

Starflex (22 - 88 mm)
HSK (22 - 150 mm)

Fine boring head Starflex 22 - 150 / HSK 22 - 150 mm

Starflex (22 - 150 mm)
HSK (22 - 150 mm)

Large scale boring range

Boring range: 87 - 520 mm
Fine adjustment: Ø 1/100 mm per graduation line
Reversal error: less than 2µ (2/1000 mm) 

These bridge tools are default designed for integration of one MicroCut Cartridge with advanced fine adjustment. The second carriage is needed for adjustment of unbalance.

Bridge fine boring tool 87 - 202 mm

Starflex
HSK

Bridge fine boring tool 200 - 520 mm

Starflex
HSK

Adapters

Fine boring adaptor

Starflex
HSK

FineCut drill adapter

Starflex
HSK

You can find further details in the Johne & Co. Starflex-Tools catalogue
or in the Johne & Co. HSK-Tools catalogue.

Download catalogue

Star-Flex
HSK-Flex