Re: [CAD_CAM_EDM_DRO] Re: Opinions on these Reliance 0690 servo motors for BP conversion

Hi Michael,

These servos are probably better than treadmill motors. I use treadmill
motors on my Boss5 retrofit. They easily give 200IPM but they need an
absolute minimum of 2:1, preferably 3:1 reduction. You can drill the
flange for the mounting holes but it is slightly small so you end up
with 4 cutouts rather than 4 holes. I made up special stepped washers to
get around that problem.

Les

Michael Larson wrote:

>Thanks to everyone for the info on these servos. The specs don't look
>too bad at 120 volts, which I'd be using with the pico-systems setup. I
>guess my real question is can I do better in the same price range? If
>I'm going to have to modify something to get these NEMA-34's to work on
>a 42 mount anyway, should I try for those 1.5 or 2.5 horsepower
>surpluscenter treadmill motors instead? Has anybody figured out what
>the usable torque is on those (I would assume, for a bridgeport,
>"enough"), and how hard is that mounting setup? Could it be as simple
>as drilling the flange on the output end and adapting the shafts? I
>know that's a lot of questions but I want to get everything right before
>I spend a dime retrofitting.
>Michael
>
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