Re: [CAD_CAM_EDM_DRO] nema 34 motors on BP series 1 conversion

Hi

Nema 34's on b/port are a bit small. They would probably be ok for X and Y with some of higher torque. I've looked at alot of b/port conversions and most of them have Nema 42 29lb/in or greater.

I retrofitted a Bridgeport and here is the basic configuration: 40lb/in DC brush servos on X,Y and Z with US digital E5S-200 encoders retrofitted rated at 40v/k 2500 Rpm making them 100volt and 13.7 amps stall torque 29 amps. The Geckos will not handle 100 volts so I'm running them at a lesser voltage sacrificing a bit of speed but still have the torque because I can still supply the amperage. Mach 2 software. Sound Logic Mach2 breakout board for interface which makes it all work together very well. It will easily maintain rapids of 120 ipm on X and Y and 60 ipm rapids on Z as I am driving the knee.

I've been using it for 14 months on a daily basis and have had zero problems with it. The only complaint I have is chips get in the keyboard. Now I'm starting to change the wiring a bit so the PC has to be on before the servo control will start for safety concerns and I hate to mess with it because it runs perfectly. Never lost a step.


Ron

feck123 <feck123@...> wrote:
Hi...was hoping to get some opinions /advice on whether it is worth
it to use these motors from e-bay-thay are nema 34 mount-or keep
trying to find some others/bigger ones ?I do not know where to find
any other reasonably priced motors for my bridgeport cnc
conversion...also,what would you recommend for the drives? rutex or
the geckos? IF there is anybody that sells a whole setup that would
be awesome but ANY help is greatly appreciated!! thanx Mike

http://cgi.ebay.com/ws/eBayISAPI.dll?
ViewItem&category=71400&item=3841702374&rd=1&ssPageName=WDVW



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