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  1. #16
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    Default Re: Lubricating jewels in mainspring barrel - oil or grease? (By: Accutronica)

    Quote Originally Posted by Accutronica View Post
    Would Moebius 8201 work well? Or silicone watch oil 10 (CS)?

    Robert
    The 10cSt silicone oil would be extremely thin. At 20C (room temperature) even Moebius 9010 is rated at 120cSt. I don't know about the 8201. Moebius docs show that it is rated at 20cSt at 20C, but it also says it's "semi-liquid" at room temperature. I don't know how you do both. 8201 is listed for use on mainsprings, so I'd be hesitant to use it on a jeweled bearing surface.

    Glen

  2. #17

    Default Re: Lubricating jewels in mainspring barrel - oil or grease? (By: glenhead)

    Quote Originally Posted by glenhead View Post
    The 10cSt silicone oil would be extremely thin. At 20C (room temperature) even Moebius 9010 is rated at 120cSt. I don't know about the 8201. Moebius docs show that it is rated at 20cSt at 20C, but it also says it's "semi-liquid" at room temperature. I don't know how you do both. 8201 is listed for use on mainsprings, so I'd be hesitant to use it on a jeweled bearing surface.

    Glen
    According to Esslinger, it is used for automatic mainsprings and Accutron's. I guess I'll try it and see how it goes. Thanks for the info Glen.

    Robert

  3. #18
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    Default Re: Lubricating jewels in mainspring barrel - oil or grease? (By: Accutronica)

    What a lovely colour! I ordered too late in the day to get it the following day but Cousins still did a great job. I managed to re-staff a 1908 grade 635 whilst waiting for this delivery so all is good

    Attached Thumbnails Attached Thumbnails IMG_3217.JPG  

  4. #19
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    Default Re: Lubricating jewels in mainspring barrel - oil or grease? (By: Mark UK)

    You know what, I think I may have gotten HP1300 confused with 9501. HP1300 will work great for what you asked for in this thread but I'm not so sure about using it on winding stems and such.

  5. #20
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    Default Re: Lubricating jewels in mainspring barrel - oil or grease? (By: karlmansson)

    Quote Originally Posted by karlmansson View Post
    You know what, I think I may have gotten HP1300 confused with......
    Nooooooo, now you tell me lol. I will use it on the barrel arbors, and it seems good to use on the crown wheel too. Is the centre wheel a good place for HP1300 (jeweled or bushed)? I am mostly servicing c1900 pocket watches, nothing smaller than a 12s.

  6. #21
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    Default Re: Lubricating jewels in mainspring barrel - oil or grease?

    I just checked with a pro friend of mine, you're good . Center wheels on pocket watches should be an excellent use for a high pressure, slow movement oil.

    The reason I got confused was because I re-watche done of Mark Lovicks videos where he uses a deep blue grease. I thought that would be the colour of your HP1300. The deep blue one is 9501 and your, red one is HP1300. 9501 is listed as a grease and HP 1300 as an oil. But it works for sliding applications as well. My friend tells me 9501 would be better on surfaces that separate an re-engage, such as clutch wheel teeth.
    Last edited by karlmansson; 04-01-2017 at 12:17 PM.

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