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<title>RoboSavvy Forum</title>
<subtitle>Robosavvy Forum: The largest online community of Humanoid Robot Builders</subtitle>
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<updated>2013-05-18T00:14:20+01:00</updated>

<author><name><![CDATA[RoboSavvy Forum]]></name></author>
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<entry>
<author><name><![CDATA[Bullit]]></name></author>
<updated>2013-05-18T00:14:20+01:00</updated>
<published>2013-05-18T00:14:20+01:00</published>
<id>http://forum.robosavvy.com/viewtopic.php?t=9354&amp;p=37829#p37829</id>
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<title type="html"><![CDATA[RX-28, MX-28, DX-117 replacement motors]]></title>

<content type="html" xml:base="http://forum.robosavvy.com/viewtopic.php?t=9354&amp;p=37829#p37829"><![CDATA[
I recently did some work to measure and determine exactly which motor is used in all three of these Robotis servos (RX-28, MX-28, DX-117)  All use the same Maxxon motor.  <br /><br />The motor is a 4W 12V core less motor <br />Maxxon PN 214897<br /><br /><a href="http://www.maxonmotorusa.com/maxon/view/product/motor/dcmotor/remax/remax17/214897" class="postlink">Maxxon PN 214897</a><br />  <br />These can be purchased directly from Maxxon although they are some what expensive, still much less than a new servo.<br /><br />The stock motor has a custom Robotis part number.  This is because Robotis has Maxxon laser weld the pinion to the motor shaft. <br /> <br />The laser welded steel pinion gear is a 0.3 module, 13 teeth, 4.88 mm OD.  <br /><br />Gears can be removed from old motors by grinding off the shaft end and weld.  <br />The gear can be re-installed onto a new motor with epoxy.<br /><br />Gear stock can also be found else where.<br /><br />I hope this helps others looking to repair servos in need of new motors <img src="http://forum.robosavvy.com/images/smilies/icon_smile.gif" alt=":)" title="Smile" /><p>Statistics: Posted by <a href="http://forum.robosavvy.com/memberlist.php?mode=viewprofile&amp;u=173">Bullit</a> — Sat May 18, 2013 12:14 am</p><hr />
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