[servtech]

Hi to all. we have negotiatons for a new bridge machine. Eumach Co., Ltd.| Machining Center Taiwanese Manufacturer I never used HSK tool holders and I see that at this machine is optional. I have heard that HSK are better and I want to hear opinios. We are not going to work it for high speed maching.We want more torgue.Is there differerce in that point? what would you choose and why? thanks a lot.

Hsk every time for me.
They run truer and machine more accurately, the tool clamps on a taper and the spindle face so has greater contact surface area. Better for high speeds and excellent for shrink tooling. The bigger spindles i.e. hsk30 and above also have internal drive dogs (keys) so do not lack heavy cutting capability. Fingers clamp tools up to 27Kn on average.

For slow speeds, rough/ intermittent cutting tough material machining, its probably better to use BT.