how many poles does this motor have?

Discussion in 'General Electronics Chat' started by jut, Mar 16, 2011.

  1. jut

    Thread Starter Senior Member

    Aug 25, 2007
    224
    2
    I deconstructed a stepper motor. Would this be considered a 4 pole motor?

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  2. John P

    AAC Fanatic!

    Oct 14, 2008
    1,632
    224
    Not really. It's a bipolar 2-phase motor. Apparently the Howard 1-19-4203 has 100 step/rev.
     
  3. jut

    Thread Starter Senior Member

    Aug 25, 2007
    224
    2
    I thought they were called bipolar because current can flow in two directions for a given coil. I was asking, in terms of general motor terminology, how many magnetic poles does this motor have?
     
  4. GetDeviceInfo

    Senior Member

    Jun 7, 2009
    1,571
    230
    manufacturers of these types of synchronous motors typically specify the number of teeth, and you'll find one less on the stator compared to rotor, so is it the stator or rotor number that's specified, I have no clue. Slo-syn popularized this motor style years ago.
     
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