Advanced Search

Much of what I know about the factory steppers came from postings made by "Boss5" over on the CNCZone forum:
www.cnczone.com/forums/bridgeport-hardin...ills/210116-cnc.html

Thanks for the advice about SteppersOnline. Where do people typically buy their China-brand steppers and drives? Is there a better source I should investigate?

I've certainly looked into Gecko for the drives. However, to my knowledge, they don't build drives that are a proper match for my steppers.

Thanks for the response!

The original drives are Bridgeport cards plugged into a backplane and mounted to a three foot heatsink. These apparently take "quadrature" inputs - not "step and direction?"

I'm not sure who made the original motors. I've been unable to find any markings/tags on them (maybe I need to unscrew the back plate, and look inside?). From what I've read, Bridgeport used a couple of different brands of steppers on these - either "Sigma" or "Superior." Apparently, they are "high voltage" steppers, and require a "high voltage" drive to run.