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

That is interesting. I might try some. I remember there
were cheaper alternatives, but in doing my research, I concluded
that the couplings I chose were better due to zero backlash.
They are not cheap, and I remember them being about 25.00
each.

Were these in the McMaster Catalog??

The place I am purchasing my motors from has spider couplings
(surplus), so I may order a few.

Thanks,

Eric


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "dcdziner" <Dcdziner@p...>
wrote:

> 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@a...>
> 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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> timg@k...
> > Moderator: pentam@c... indigo_red@q... [Moderators]
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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/

> >