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cw vs. ccw #37382
04/27/04 01:14 AM
04/27/04 01:14 AM
rizer  Offline OP
Joined: Jan 2004
Posts: 91
bradenton ,fl.,usa
I have been told the way to determine wether a motor is spinning clockwise or counter clockwise is to look at it from the back of the motor ( the opposite side of the output shaft). Is this correct?
I apologize i'm not in the correct section of this forum. I also noticed iI cannot delete it to put it in the "general discussion" section.

[This message has been edited by rizer (edited 04-27-2004).]

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Re: cw vs. ccw #37383
04/27/04 01:40 AM
04/27/04 01:40 AM
stamcon  Offline
Joined: Mar 2001
Posts: 330
So San Francisco CA
Rizer, my experience is just the opposite. Look at the end of the shaft for direction(VFSE). If the motor is double shafted, look at the end with the leads(VFLE). Some manufacturers might use the opposite of this, but this is the only way I've seen them.


Re: cw vs. ccw #37384
04/27/04 05:37 PM
04/27/04 05:37 PM
walrus  Offline
Joined: Jul 2002
Posts: 680
Bangor Me. USA
The motors I've ordered have been tagged cw or ccw on the shaft end. Its my experience that you look at the shaft from the shaft end to determine rotation. My experience is strickly fractional hp if that makes a difference?

Re: cw vs. ccw #37385
04/27/04 06:18 PM
04/27/04 06:18 PM
maintenanceguy  Offline
Joined: Dec 2001
Posts: 300
Southern NJ, USA
rotation is looking at the shaft end unless otherwie noted. I've never seen it otherwise noted.

Re: cw vs. ccw #37386
04/27/04 06:22 PM
04/27/04 06:22 PM
frenchelectrican  Offline
Joined: Feb 2003
Posts: 939
Wi/ Paris France { France for ...
shaft end for electric motors otherwise noted or specal installaments.

btw most engines [ gas and diesel engines] are set up by looking at the flywheel arrangement [ most engine run ccw set up but few do run in cw so just like electric motor just watch out that all ]

merci , marc

Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)

Re: cw vs. ccw #37387
04/27/04 08:44 PM
04/27/04 08:44 PM
rizer  Offline OP
Joined: Jan 2004
Posts: 91
bradenton ,fl.,usa
thanks for the answer and i'm glad i asked. the superintendant and the general formen both said the exact opposite .but, i'd heard different.

Re: cw vs. ccw #37388
04/27/04 10:05 PM
04/27/04 10:05 PM
Bjarney  Offline
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
I believe NEMA Standard MG1 used to define rotation of small- and medium-sized motors and generators as “viewed [ODE] opposite the drive end” but MG1-2002(condensed) seems quiet on the matter. IIRC, NEMA standards never defined a particular rotation for a given phase sequence.

Re: cw vs. ccw #37389
04/27/04 10:21 PM
04/27/04 10:21 PM
Attic Rat  Offline
Joined: Dec 2003
Posts: 524
Bergen Co.,N.J. USA
...Rizer, if you're still "fuzzy" about this, call an electrical motor repair shop,..where they do rebuilding,rewinding,servicing, etc,..and ask one of the techs there... [Linked Image] [Linked Image]

.."if it ain't fixed,don't break a Licensed Electrician"
Re: cw vs. ccw #37390
04/28/04 04:00 AM
04/28/04 04:00 AM
rizer  Offline OP
Joined: Jan 2004
Posts: 91
bradenton ,fl.,usa
thanks guys I think that about covers it! I appreciate it.


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