Jump to content
  • Join the online East Midlands astronomy club today!

    With active forums, two dark sites and a knowledgeable membership, East Midlands Stargazers has something for everyone.

What Grease for OTA focus tube worm gear?


Recommended Posts

Read differing reports using Lithium based or PTFE grease which is best.


I like this one cos I can eat it safely as its H-1 grade   :D




or something like 






Bacon Grease ???? really 


Seriously what are your preferences ? 


The present stuff seems very very tacky !


Thanks in advance

Edited by stash
Link to comment
Share on other sites

I shouldnt think it makes much difference really, both are based on slippy bases, and a focuser isnt a high speed high load bearing area so I wouldnt worry too much about it, just use a grease which wont spread all over the place in warm temperatures or go solid in freezing conditions. Just to throw another in the mix I use a teflon based grease on my mounts etc.

Link to comment
Share on other sites

Personally I would not use any grease on a focuser.

The rack part is exposed to the elements and so will pick up dust and grit which will stick to the grease causing damage as it is dragged between the rack and the pinion.

Most rack and pinions will have different metals for the rack and the pinion so are pretty much self lubricating.

As Phil points out the rack and pinion is a slow speed non load bearing part.

So long as the Teflon pads are in good order all should be well.

Link to comment
Share on other sites

Thanks for the comments - might try a clean R&P - but it does go against my gut instinct (however wrong that might be)what happens to two metals grinding together even if they are under minimal pressure.


Thanks all for your info.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.