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I have 2 originals. swap pulley end for end and do drill a hole. if u need belts 48mxl050 . 050 is half inch wide or 2x 1/8. originals are NOT standard 200 steps per rotation so original electronics won't work. I used gecko or other drivers with Mach3 could do a deal on my old original motors for us50 plus ship from Canada.
On Jun 9, 2020 10:11, John <john@...> wrote:
I want to convert my old Compact 5 CNC to use Nema 23 motors. I have most of the bits already, but I am having trouble sourcing the stepper motors.
Measuring the original motors, it looks like I need Nema 23s with a 24mm long, 1/4" diameter shaft. There are loads around at 20.6 or 21mm, but 24mm or longer seems to be a rare thing.
I am in the UK, and tried to order some from China (after finding none in the UK), but after a lot of faffing about, they still haven't shipped and I am giving up on them.
Where are people finding their Nema 23 motors? Is there a trick to fitting the original pulley to a 21mm shaft? I thought about turning the pulley over, but the hole for the roll pin would be near impossible to drill, and I don't like the idea of a hole at the base of the shaft.