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« on: February 12, 2018, 10:43:30 PM »
Hi,
from what I've found you have a 1kW spindle, probably an AC induction motor.
If you wish to control its speed you'll need a 1kW (min) VFD, don't buy a cheap crap one, they don't last.
From what I read its currently capable of 1750 rpm. With a VFD you might push that out to 3000 rpm
but if you don't want to destroy it not much more. Admittedly its probably not inverter rated but you could risk
it...the insulation could possibly fail but I've had reasonable success with standard motors on VFDs.
Such a spindle might give you reasonable torque, enough for smallish tools in steel. If you want to do engraving
or machine aluminum then you want something way WAY faster, try 24000 rpm. There are such spindles,
there are lots of Chinese ones and most of them work pretty well. They are high speed low torque, good for
engraving and aluminum but crap in steel. Stick with the spindle you've got for steel.
Either way you'll need a VFD. Hitachi do a good line of devices, quality at a fair price. Delta likewise do good value/ quality
units. Don't go cheaper...there are lots and lots of them and they go bang all the time!
Craig