Re: [CAD_CAM_EDM_DRO] Re: servo motor shaft 5/8 to 1/4...shaft butcher

Eric,
I thought that the price for the spider couplings was pretty
reasonable. Each coupling, consisting of the 2 ends and the rubber spider,
has a total cost of $5.19, and I've bought and used these couplings myself.

Marv Frankel

----- Original Message -----
From: "etauch" <erictauch@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, June 25, 2003 3:05 PM
Subject: [CAD_CAM_EDM_DRO] Re: servo motor shaft 5/8 to 1/4...shaft butcher


> I know you are right about not butchering the shafts. BUT, I just
> got 3 of the helical beam shaft couplers from McMaster. Then a
> week or so later figured out my servo motors are a bit light
> in the britches. So I am going with larger/lower RPM servos.
> I dont want to place another 85.00 order, so I'm trying to figure
> out an cheap and easy mod. Probably doesnt exist.
>
> Maybe I can exchange my current units for a differnt size.
>
> Eric
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "dcdziner" <Dcdziner@p...>
> wrote:
> > Come on guys,
> > McMaster-Carr sells flexible spider couplings,
> with half
> > of it having a 5/8" bore, and half with a 1/4" bore, and theyre so
> cheap, it
> > doesn't pay to make them. Don't even think about butchering the
> shaft of the
> > motor.
> >
> > Marv Frankel
> > Los Angeles
> >
> > ----- Original Message -----
> > From: "turbulatordude" <davemucha@j...>
> > To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > Sent: Tuesday, June 24, 2003 12:28 PM
> > Subject: [CAD_CAM_EDM_DRO] Re: servo motor shaft 5/8 to 1/4...best
> way??
> >
> >
> > > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "etauch" <erictauch@a...>
> > > wrote:
> > > > Hello,
> > > >
> > > > I am considering some servo motors which have a 5/8 shaft, but I
> > > > need to couple to 1/4 shaft couplers. I cannot open the
> couplers
> > > > up enough, so I am trying to figure out the best way reduce the
> > > > shaft diameter, or maybe attach a 1/4" adapter endpiece.
> > > >
> > > > My question: Can the shafts be easily removed from a servo
> motor
> > > > to be chucked up in a lathe? Will I never get the thing
> > > > re-assembled properly? Maybe even chuck the motor in the lathe
> > > > and power it up!!??
> > > >
> > > > All suggestions appreciated.
> > > >
> > > > Thanks,
> > > >
> > > > Eric
> > >
> > > If you have a lathe make a coupler.
> > >
> > > if you remove 3/8 of the shaft OD, you are permantly lowering the
> > > maximum torque of the motor.
> > >
> > > Making an adapter is much easier. make a sleeve with both a 1/4
> ID
> > > and a 5/8 id. or get a 5/8 coupler and make a 1/4 to 5/8 bushing.
> > >
> > > Dave
> > >
> > >
> > >
> > >
> > >
> > >
> > >
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> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
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