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Hi Michael,<br>
sorry for my delayed answer, your e-mail was filtered out.<br>
<br>
However, I asked the head of our workshop and he toled me that he
mounted a 6001 bearing (the number means outer diameter 28 mm, inner
diameter 12 mm hight 8 mm) into our setup. This bearing has no
sealing and no grease and is made of brass (balls, cage). He told me
that such bearings are available as a standard for example from SKF
oder FAG. For the exact number you should ask your local dealer
because there are hundreds of different bearings available.<br>
<br>
The belt was customized from bulk stock. They cutted of a piece of
appropriate length and glued the cutted edges together with
sperglue. I was surprised to see this, but it works fine.<br>
<br>
Best <br>
<br>
Hartmann<br>
<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 20.11.2014 18:02, Michael Redd
wrote:<br>
</div>
<blockquote cite="mid:D0936C31.1AC62%25mredd@cores.utah.edu"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<div>Thank you for the informative reply. I would be much obliged
if you would provide me the part information on the replacement
bearings and belt.</div>
<div><br>
</div>
<span id="OLK_SRC_BODY_SECTION">
<div style="font-family:Calibri; font-size:11pt;
text-align:left; color:black; BORDER-BOTTOM: medium none;
BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT:
0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;
BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style="font-weight:bold">From: </span>Hartmann Harz
<<a moz-do-not-send="true"
href="mailto:harz@biz.uni-muenchen.de">harz@biz.uni-muenchen.de</a>><br>
<span style="font-weight:bold">Date: </span>Wednesday,
November 19, 2014 2:20 PM<br>
<span style="font-weight:bold">To: </span>Michael Redd <<a
moz-do-not-send="true" href="mailto:mredd@cores.utah.edu">mredd@cores.utah.edu</a>>,
"<a moz-do-not-send="true" href="mailto:openspim@openspim.org">openspim@openspim.org</a>"
<<a moz-do-not-send="true"
href="mailto:openspim@openspim.org">openspim@openspim.org</a>><br>
<span style="font-weight:bold">Cc: </span>"<a
moz-do-not-send="true"
href="mailto:edgar.escobar.nieto@ipt.fraunhofer.de">edgar.escobar.nieto@ipt.fraunhofer.de</a>"
<<a moz-do-not-send="true"
href="mailto:edgar.escobar.nieto@ipt.fraunhofer.de">edgar.escobar.nieto@ipt.fraunhofer.de</a>><br>
<span style="font-weight:bold">Subject: </span>Re: [OpenSPIM]
twister motor belt slipping<br>
</div>
<div><br>
</div>
<div>
<div bgcolor="#FFFFFF" text="#000000">Dear Michael,<br>
in the bginning I also had the problem of belt slipping. At
least I was believing that the belt slips. Later I learned
that the belt tesion was to high and the bearing was
hard-steering. This results during the operation of the
twister stepping motor in a loss of steps. Loss of steps or
slipping has the same effect, the twister does not turn to
the expected angle. We solved this issue by exchanging the
bearing with a smooth running one and by a LONGER belt
producing lower tension and thereby lower friction in the
bearings of the motor and the sample holder.<br>
<br>
I don't know if this helps to solve your problem but
eventually this could help others. At least here in Munich
it worked.<br>
<br>
Best regards<br>
<br>
Hartmann<br>
<br>
<pre class="moz-signature" cols="72">--
Dr. H. Harz
Ludwig-Maximilians-Universität München
Biozentrum
AG Prof. Leonhardt
Raum B02.059
Großhaderner Straße 2
82152 Martinsried
Germany
Phone: +49(89)2180-74 259
Fax: +49(89)218099-74 236
Mail: <a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:harz@biz.uni-muenchen.de">harz@biz.uni-muenchen.de</a></pre>
<br>
<br>
<div class="moz-cite-prefix">On 19.11.2014 18:42, Michael
Redd wrote:<br>
</div>
<blockquote cite="mid:D0922475.1AC48%25mredd@cores.utah.edu"
type="cite">
<div>I am struggling with the twister motor belt slipping
that others have mentioned. I have seen the toothed
belt used by Edgar's group in Aachen and would be much
obliged if he described this in more detail so I could
copy it.</div>
<div>-- </div>
<div>
<div>
<div>Michael Redd</div>
</div>
<div>Imaging Specialist</div>
<div>Microscopy Core Facility</div>
<div>University of Utah</div>
<div><span style="font-variant: normal; letter-spacing:
normal; line-height: 20px; text-align: start;
text-indent: 0px; text-transform: none; white-space:
normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color:
rgb(255, 255, 255); ">R</span><span
style="font-variant: normal; letter-spacing: normal;
line-height: 20px; text-align: start; text-indent:
0px; text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); ">adiobiology
Bldg</span><span style="font-variant: normal;
letter-spacing: normal; line-height: 20px;
text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color:
rgb(255, 255, 255); display: inline !important;
float: none; ">,</span><span style="font-style:
normal; font-variant: normal; font-weight: normal;
letter-spacing: normal; line-height: 20px;
text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color:
rgb(255, 255, 255); display: inline !important;
float: none; "> Room 55</span><br style="font-style:
normal; font-variant: normal; font-weight: normal;
letter-spacing: normal; line-height: 20px;
text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color:
rgb(255, 255, 255); ">
<span style="font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal;
line-height: 20px; text-align: start; text-indent:
0px; text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); display:
inline !important; float: none; ">Salt Lake City,
Utah</span></div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
OpenSPIM mailing list
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:OpenSPIM@openspim.org">OpenSPIM@openspim.org</a><a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://openspim.org/mailman/listinfo/openspim">http://openspim.org/mailman/listinfo/openspim</a></pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Dr. H. Harz
Ludwig-Maximilians-Universität München
Biozentrum
AG Prof. Leonhardt
Raum B02.059
Großhaderner Straße 2
82152 Martinsried
Germany
Phone: +49(89)2180-74 259
Fax: +49(89)218099-74 236
Mail: <a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:harz@biz.uni-muenchen.de">harz@biz.uni-muenchen.de</a></pre>
</div>
</div>
</span>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Dr. H. Harz
Ludwig-Maximilians-Universität München
Biozentrum
AG Prof. Leonhardt
Raum B02.059
Großhaderner Straße 2
82152 Martinsried
Germany
Phone: +49(89)2180-74 259
Fax: +49(89)218099-74 236
Mail: <a class="moz-txt-link-abbreviated" href="mailto:harz@biz.uni-muenchen.de">harz@biz.uni-muenchen.de</a>
</pre>
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