STANDARD-TEMP VS. HIGH-TEMP CLUTCH PILOT BEARINGS: WHAT’S THE DIFFERENCE?
Time：23 Nov,2022
<p style="text-align: center;"><img src="/ueditor/php/upload/image/20221123/1669194392139892.png" title="1669194392139892.png" alt="4.png"/></p><p style="text-align: justify;"><span style="font-size: 14px; font-family: arial, helvetica, sans-serif;">When replacing a heavy-duty <a href="http://www.unim-inc.com/products/Clutch-Release-Bearing/8.html" target="_blank" style="color: rgb(0, 112, 192); text-decoration: underline;"><span style="font-family: arial, helvetica, sans-serif; font-size: 14px; color: rgb(0, 112, 192);"><strong>clutch pilot bearing</strong></span></a>, there are a few options to consider. You should always follow the OEM recommendations as they will require either standard- or high-temperature bearing, and that difference between the two is extremely important.</span></p><p style="text-align: justify;"><span style="font-size: 14px; font-family: arial, helvetica, sans-serif;"><br/></span></p><p style="text-align: justify;"><span style="font-size: 14px; font-family: arial, helvetica, sans-serif;">While clutch pilot bearings are often thought of as a relatively simple deep groove ball bearing, they are actually highly-engineered and purpose built for demanding applications. Major differences between Standard and High Temp bearings is the use of different greases and seal materials, as you can see here:</span></p><p style="text-align: justify;"><span style="font-size: 14px; font-family: arial, helvetica, sans-serif;">Standard-temp clutch pilot bearings</span></p><p style="text-align: justify;"><span style="font-size: 14px; font-family: arial, helvetica, sans-serif;">Grease: Polyrex EM Grease – Temp range of -13°F to 338°F (-25°C to 170°C)<br/>Seal: Full Contact Nitrile Seal – Temp range of -15°F to 225°F (-26°C to 107°C)</span></p><p style="text-align: justify;"><span style="font-size: 14px; font-family: arial, helvetica, sans-serif;"><br/></span></p><p style="text-align: justify;"><span style="font-size: 14px; font-family: arial, helvetica, sans-serif;">High-temp clutch pilot bearings</span></p><p style="text-align: justify;"><span style="font-size: 14px; font-family: arial, helvetica, sans-serif;">Grease: Krytox GPL225 Grease – Temp range of -40°F to 428°F (-40°C to 220°C)<br/>Seal: Full Contact Viton Seal – Temp range of -40°F to 425°F (-40°C to 218°C)</span></p><p style="text-align: justify;"><span style="font-size: 14px; font-family: arial, helvetica, sans-serif;"><br/></span></p><p style="text-align: justify;"><span style="font-size: 14px; font-family: arial, helvetica, sans-serif;">You’ll usually find high-temp bearings in heavy-duty applications. And you’ll want to note if the clutch pilot bearing you’re servicing also has an integrated snap ring.</span></p><p style="text-align: justify;"><span style="font-size: 14px; font-family: arial, helvetica, sans-serif;"><br/></span></p><p style="text-align: justify;"><span style="font-size: 14px; font-family: arial, helvetica, sans-serif;">These can seem like small details, but a clutch bearing failure can put a truck on the side of the road, restrict shifting, and possibly damage the intermediate shaft or, potentially, the entire clutch pack assembly. And that’s not a come-back service call that you want to field.</span></p><p><br/></p>
