NEMA 23 & 34 Bolt pattern & end frame size in. measurements


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Thread: NEMA 23 & 34 Bolt pattern & end frame size in. measurements

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    Registered millman52's Avatar
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    Default NEMA 23 & 34 Bolt pattern & end frame size in. measurements

    Hope these drawings will help someone else. I've had to convert these a couple times myself.

    posted in .jpg and .dwg formats.

    Drawings are for motor case referance only. Shaft size & length may vary from motor to motor.

    Recomend these measurments be checked across the face of the actual motor being used.

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    Attached Thumbnails Attached Thumbnails NEMA 23 & 34 Bolt pattern & end frame size in. measurements-nema-23-jpg   NEMA 23 & 34 Bolt pattern & end frame size in. measurements-nema-34-jpg  
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    Last edited by millman52; 05-04-2009 at 01:50 PM.
    If it works.....Don't fix it!


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    Community Moderator ger21's Avatar
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    Most (all?) Nema 23 stepprs have a .25" shaft, not .375". Usually, if they have a .375" shaft, they are larger 60mm motors, and not Nema 23's.

    Gerry

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    Gold Member acondit's Avatar
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    Quote Originally Posted by ger21 View Post
    Most (all?) Nema 23 stepprs have a .25" shaft, not .375". Usually, if they have a .375" shaft, they are larger 60mm motors, and not Nema 23's.
    Ger,

    I think that some of the higher torque Nema 23 steppers that Keiling sells are 0.375" shafts.

    Alan



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    Registered millman52's Avatar
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    The drawing was taken from a 570 oz Nema 23 that does in fact have a 3/8" shaft. Good that you pointed it out though Gerry, I'd hate for someone to do machine work based on the shaft & then be wrong. I have edited the first post accordingly.

    If it works.....Don't fix it!


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    Community Moderator ger21's Avatar
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    Quote Originally Posted by acondit View Post
    Ger,

    I think that some of the higher torque Nema 23 steppers that Keiling sells are 0.375" shafts.

    Alan
    Yes, but they are not Nema 23, they are 60mm, which are larger. I checked that before I posted. I didn't check the hole pattern, which may be the same, but the motor is 3mm bigger than a Nema23.

    Gerry

    UCCNC 2017 Screenset
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    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


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    Registered millman52's Avatar
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    Quote Originally Posted by ger21 View Post
    Yes, but they are not Nema 23, they are 60mm, which are larger. I checked that before I posted. I didn't check the hole pattern, which may be the same, but the motor is 3mm bigger than a Nema23.
    Gerry,

    The 570 oz in motor I am using is also 60 MM across the flat sides of the case. It was sold to me as a NEMA 21 by someone other than Keling. I did look up a Keling 282 Oz in motor, case size listed 56.4 mm (NEMA 21) & the end bell bolt pattern, center hub & bolt hole size are the same.

    So aparently they are calling the higher torque 60 mm case motors NEMA 23 merely because the end mount is the same.

    If it works.....Don't fix it!


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NEMA 23 & 34 Bolt pattern & end frame size in. measurements

NEMA 23 & 34 Bolt pattern & end frame size in. measurements