I have a very hard time believing the drive dogs are required for machines with single-digit horsepower spindles. The taper alone should be MORE than capable of driving up to probably 5+HP and more. I've run up to 3HP through a little Tormach holder for hours on end with no signs of slippage, and a 30-taper will grip one helluva lot better than a little Tormach holder.
I am going to swap my spindle to a ISO 30-taper. ISO 30 does NOT have drive dogs by design.
Regards,
Ray L. |