Long chips in combination with poor chip evacuation create a chip jam, which can lead to poor machining results or tool breakage. Therefore, if possible, select a toolholder that allows adequate space for chip evacuation.

If chip formation is unfavourable or chip removal is poor, e.g. due to insufficient coolant pressure, the distance WF and/or G must be selected accordingly. For this purpose, use our bar calculator.

By using boring bars with several clamping surfaces / flattenings, the chip removal can be optimised accordingly by means of a larger coolant supply and corresponding pressure.

Please choose a shaft diameter:

Shaft diameter 25 mmShaft diameter 25,4 mm (1 inch)Shaft diameter 32 mmShaft diameter 32 mm (Weldon-mount)