<br><font size=2 face="Arial">Look at the info on our website (aeroslave.com) under Accessories. There's a bearing supplier here in North Texas that we've had the opportunity to talk with. The temperature appears to have more to do with bearing life than anything else. The local manufacturer (Purvis) carries NTN, as Ron mentions, but also a few other manufacturers that make equivalents. Major bearing users usually lean toward the use of bearings that can be purchased from a number of suppliers. This is better for cost control and consistent supply. The color of the seal means nothing at all. One mfg uses red seals and another uses black or blue. </font>
<br><font size=2 face="Arial"> There are different grades of bearings, but not all grades are available in all sizes. The good news is that the bearing companies have cross ref charts, so if you can read the bearing number on your current bearing, they can find all their stock choices that match, At Purvis, they don't seem to really support asking for the specific NTN bearing. You give them the NTN part number and they get you what they have in that size and quality grade.</font>
<br><font size=2 face="Arial">--Lance</font>
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<br><font size=2 face="Arial">I have been able to acquire replacement bearings of a corrosion resistant steel (likely stainless) which has shown excellent durability and longevity in my OS 140 EFI's. They RED plastic seals on both sides of the bearing. This rear bearing is made by NTN of Japan and has a part number: 6904 LLU/2A</font>
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<br><font size=2 face="Arial">Over 300 flights and still smooth, no corrosion. You might check your local supplier about these and see if they can get them. These are really good bearings.</font>
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<br><font size=2 face="Arial">The standard OS front bearing seems to have unlimited life (have not had one to get rough yet) and is Part Number: 29431000 -- it has the red plastic seals on both sides as well.</font>
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<br><font size=6 color=#c0c0c0 face="Arial">Ron Barr</font>
<br><font size=6 color=#c0c0c0 face="Arial"> NSRCA 249</font>
<br><font size=6 color=#c0c0c0 face="Arial"> AMA 6507</font><font size=3 face="Rage Italic"> </font>