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[DPRG] Motor Dimensions

Subject: [DPRG] Motor Dimensions
From: Robert L. Jordan rljordan at airmail.net
Date: Wed Jun 20 13:44:56 CDT 2001

Eric,

Will this help?
http://www.mohler.com/frame.html
Bob

 Yundt <eric at facetcorp.com> said:

> DPRG,
> 
> Anyone have (or know where to get) the "official" specs on
> common motor dimensions like NEMA 17, NEMA 23, etc. as well
> as for the common R/C servo.  Unfortunately, NEMA.ORG is not
> as helpful as one might imagine unless one plunks down many
> credits to purchase the various standards.  I'm trying to
> make some nice motor mounts and I'd like to be generically
> as standard as I can be.
> 
> Here are the specs I came up with for standard R/C Servo size
> and the common stepper motor sizes, NEMA 17 and NEMA 23, mainly
> from measuments and a few manufacturer's motor spec sheets:
> 
>    http://robostuff.com/dprg/eric_yundt/motor_cad.jpg
> 
> R/C Servo
> 
>          |b|
>           |
>      +- -- -+ A            A - B  = 0.28125   or  9/32"
>      |( )(a)|              B - C  = 1.5       or  1/2"
>      |------| B            A - D  = 2.0625    or  2 1/16"
>      |      |              E - F  = 0.75      or  3/4"
>      |      |              a-hole diameter:
>      |      |                     = 0.1875    or  3/16"
>      |      |              a-hole center point from A:
>      |      |                     = -0.1875, -0.1875
>      |------| C                   =  -3/16", -3/16" 
>      |( )( )|              b-channel width:  
>      +- -- -+ D                   = 0.125     or  1/8"
>      E      F
> 
> 
> NEMA 17 Stepper
> 
>      A          B
>      +----------+  
>      |()  --  ()| C         A - B = 1.65      or  42mm
>      |  / a  \  |           C - D = 1.222     or  31mm
>      |  \    /  |           a-diameter
>      |()  --  ()| D               = 0.866     or  22mm
>      +----------+
> 
> NEMA 23 Stepper
> 
>      A             B
>      +-------------+  
>      |()   ___   ()| C
>      |   --   --   |        A - B = 2.204    or  56mm
>      |  /   a   \  |        C - D = 1.856    or  47.14mm
>      |  \       /  |        a-diameter
>      |   --___--   |              = 1.5      or  38.1mm
>      |()         ()| D
>      +-------------+
> 
> 
> Thanks,
> 
> --
> Eric
> 
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> 



-- 
Robert L. Jordan (Bob)
www.robotfun.com




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