Hey Jim,
It depends on
- the exact spindle length (datasheet) and
- the position of the spindle in the holder (mine has a mark) and
- the distance between protruding Z stepper and spindle’s top end taking into account the actual Z slider’s one of three possible mounting positions.
With respect to all this I would measure it then. Since I’m waiting for my machine yet, I can’t do it. Maybe someone else can?
Once the Onefinity 80 mm spindle holder was released I ordered it and I came accross the question whether to buy a 2.2 kW spindle with ER16 or with ER20 collet. The first takes tool shanks from 1-10 mm and the latter from 1-13 mm, which would mean half-inch tools. But since at first I did not expect to use tools larger than 8 mm, I was unsure.
So I asked the manufacturer and he answered, the spindle with ER20 collet has larger bearings and a stiffier shaft. Larger bearings means longer life. Stiffier shaft means more precision. Also one should take into consideration that when using tools with a larger shank, the thicker the shank the stiffier the tool and so the longer the tools you can use – and thus the deeper the pockets you can mill into your workpiece. So I went for the ER20 spindle.
Surely not. I’m currently studying different VFD’s User manuals in order to create a wiki entry. VFDs are complex but using the basic functions (and most beginners rarely need more) is definetely not Rocket Science.