electrical engineering

<div style="background-color: yellow; color: red; text-align: center;"><span style="font-size: medium;"><span style="font-family: Arial;">Construction</span></span></div><br />
<div style="text-align: justify;"><span style="font-size: medium;"><span style="color: black; font-family: Arial;"><span style="font-size: x-small;">The anti-friction bearing is used according to loads; and SHELL DRUM R grease is applied, since it is superior lubricant and resist deterioration. The typical bearing construction is shown in Fig. 1-3 </span></span></span></div><br />
<div style="text-align: center;"><span style="font-size: medium;"><span style="color: black; font-family: Arial;"> </span></span><a href="http://hayatei.blogspot.com/2010/12/bearing-and-lubrication.html"><img alt="http://img105.herosh.com/2010/12/21/806900401.png" src="http://img105.herosh.com/2010/12/21/806900401.png" /></a></div><br />
<div style="background-color: yellow; color: red; text-align: center;"><span style="font-size: medium;">Fig.1-3 Bearing Construction</span></div><br />
<table border="1" cellpadding="0" cellspacing="0" class="MsoNormalTable" style="border-collapse: collapse; border: medium none; margin-left: 62.1pt;"><tbody>
<tr style="height: 22pt;">   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext; border-style: double solid solid double; border-width: 4.5pt 1pt 2.25pt 4.5pt; height: 22pt; padding: 0cm; width: 49.5pt;" width="66"><div align="center" class="MsoNormal" style="text-align: center;"><b><span style="font-family: Arial; font-size: 11pt;">Item   No.</span></b></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double solid solid none; border-width: 4.5pt 1pt 2.25pt medium; height: 22pt; padding: 0cm; width: 103pt;" width="137"><div align="center" class="MsoNormal" style="text-align: center;"><b><span style="font-family: Arial; font-size: 11pt;">Item</span></b></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double solid solid none; border-width: 4.5pt 1pt 2.25pt medium; height: 22pt; padding: 0cm; width: 45.8pt;" width="61"><div align="center" class="MsoNormal" style="text-align: center;"><b><span style="font-family: Arial; font-size: 11pt;">Item   No.</span></b></div></td>   <td style="-moz-background-clip: border; -moz-background-inline-policy: continuous; -moz-background-origin: padding; background: rgb(217, 217, 217) none repeat scroll 0% 0%; border-color: windowtext windowtext windowtext -moz-use-text-color; border-style: double double solid none; border-width: 4.5pt 4.5pt 2.25pt medium; height: 22pt; padding: 0cm; width: 159.4pt;" width="213"><div align="center" class="MsoNormal" style="text-align: center;"><b><span style="font-family: Arial; font-size: 11pt;">Item</span></b></div></td>  </tr>
<tr style="height: 16.55pt;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 16.55pt; padding: 0cm; width: 49.5pt;" width="66"><div align="center" class="MsoNormal" style="text-align: center;"><span style="font-family: Arial; font-size: 11pt;">1</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 16.55pt; padding: 0cm; width: 103pt;" width="137"><div class="MsoNormal" style="text-indent: 3.55pt;"><span style="font-family: Arial; font-size: 11pt;">Grease nipple</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 16.55pt; padding: 0cm; width: 45.8pt;" width="61"><div align="center" class="MsoNormal" style="text-align: center;"><span style="font-family: Arial; font-size: 11pt;">6</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 16.55pt; padding: 0cm; width: 159.4pt;" width="213"><div class="MsoNormal" style="text-indent: 5.75pt;"><span style="font-family: Arial; font-size: 11pt;">Locking washer</span></div></td>  </tr>
<tr style="height: 17.3pt;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 17.3pt; padding: 0cm; width: 49.5pt;" width="66"><div align="center" class="MsoNormal" style="text-align: center;"><span style="font-family: Arial; font-size: 11pt;">2</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 17.3pt; padding: 0cm; width: 103pt;" width="137"><div class="MsoNormal" style="text-indent: 3.55pt;"><span style="font-family: Arial; font-size: 11pt;">Bracket cover ,</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 17.3pt; padding: 0cm; width: 45.8pt;" width="61"><div align="center" class="MsoNormal" style="text-align: center;"><span style="font-family: Arial; font-size: 11pt;">7</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 17.3pt; padding: 0cm; width: 159.4pt;" width="213"><div class="MsoNormal" style="text-indent: 5.75pt;"><span style="font-family: Arial; font-size: 11pt;">Shaft</span></div></td>  </tr>
<tr style="height: 18pt;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 18pt; padding: 0cm; width: 49.5pt;" width="66"><div align="center" class="MsoNormal" style="text-align: center;"><span style="font-family: Arial; font-size: 11pt;">3</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 18pt; padding: 0cm; width: 103pt;" width="137"><div class="MsoNormal" style="text-indent: 3.55pt;"><span style="font-family: Arial; font-size: 11pt;">Grease pipe</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 18pt; padding: 0cm; width: 45.8pt;" width="61"><div align="center" class="MsoNormal" style="text-align: center;"><span style="font-family: Arial; font-size: 11pt;">8</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 18pt; padding: 0cm; width: 159.4pt;" width="213"><div class="MsoNormal" style="text-indent: 5.75pt;"><span style="font-family: Arial; font-size: 11pt;">Anti-friction bearing</span></div></td>  </tr>
<tr style="height: 17.75pt;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid solid double; border-width: medium 1pt 1pt 4.5pt; height: 17.75pt; padding: 0cm; width: 49.5pt;" width="66"><div align="center" class="MsoNormal" style="text-align: center;"><span style="font-family: Arial; font-size: 11pt;">4</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 17.75pt; padding: 0cm; width: 103pt;" width="137"><div class="MsoNormal" style="text-indent: 3.55pt;"><span style="font-family: Arial; font-size: 11pt;">Bracket</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid solid none; border-width: medium 1pt 1pt medium; height: 17.75pt; padding: 0cm; width: 45.8pt;" width="61"><div align="center" class="MsoNormal" style="text-align: center;"><span style="font-family: Arial; font-size: 11pt;">9</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double solid none; border-width: medium 4.5pt 1pt medium; height: 17.75pt; padding: 0cm; width: 159.4pt;" width="213"><div class="MsoNormal" style="text-indent: 5.75pt;"><span style="font-family: Arial; font-size: 11pt;">Bearing cover</span></div></td>  </tr>
<tr style="height: 21.25pt;">   <td style="border-color: -moz-use-text-color windowtext windowtext; border-style: none solid double double; border-width: medium 1pt 4.5pt 4.5pt; height: 21.25pt; padding: 0cm; width: 49.5pt;" width="66"><div align="center" class="MsoNormal" style="text-align: center;"><span style="font-family: Arial; font-size: 11pt;">5</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid double none; border-width: medium 1pt 4.5pt medium; height: 21.25pt; padding: 0cm; width: 103pt;" width="137"><div class="MsoNormal" style="text-indent: 3.55pt;"><span style="font-family: Arial; font-size: 11pt;">Grease runner</span></div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none solid double none; border-width: medium 1pt 4.5pt medium; height: 21.25pt; padding: 0cm; width: 45.8pt;" width="61"><div align="center" class="MsoNormal" style="text-align: center;"><br />
</div></td>   <td style="border-color: -moz-use-text-color windowtext windowtext -moz-use-text-color; border-style: none double double none; border-width: medium 4.5pt 4.5pt medium; height: 21.25pt; padding: 0cm; width: 159.4pt;" width="213"><div align="center" class="MsoNormal" style="text-align: center;"><br />
</div></td>  </tr>
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<div style="background-color: yellow; color: red; text-align: center;"><span style="font-size: medium;">Maintenance</span></div><div style="text-align: center;"><br />
</div><div style="text-align: center;"><br />
</div><div style="text-align: justify;">Any abnormal condition of the bearing during motor oper¬ation results in temperature rise, abnormal noise, etc. The knowledge of the motor's normal operating condition serves to make correct judgment as to whether the motor is in normal operating condition or not.<br />
<br />
In case, SHELL DRUM R grease superior in heat resistance is used, the temperature rise is limited to 55 degrees on the surface, when the reference ambient temperature is 40º C.The high temperature of the lubricant (grease) results in the increase in the deterioration of the lubricant, and so usually, keep the temperature not to exceed 95º C, or 105ºC at the highest.<br />
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It is difficult to describe noise, but in some case, a friction sound of the retainer can be heard like a keen metallic sound. This occurs due to the inadequate supply of grease, and so the noise goes out as soon as more grease is supplied. And similar friction sound of the retainer can be heard when the motor is restarted after long stand-by (especially in winter).<br />
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The noise nearly dies out after a small amount of grease is supplied or after the motor is operated for 20 minutes or so.</div>

BEARING AND LUBRICATION

Construction The anti-friction bearing is used according to loads; and SHELL DRUM R grease is applied, since it is superior lubricant and resist deterioration. The typical bearing construction is show…

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