What kind of lube for a J8 sticky focus

[Rey]

Does anyone have any suggestions about a good lube material for my sticky J8 focus mechanism? Hopefully something that will not break down and leak into the lens elements, and is also readily available.

 

[newspaperguy]

Get a tube of silicone grease.

Usually found carded at any auto supply store.

Check out the Kiev Survival Site.

 

[Roger Hicks]

Assuming you are stripping it down, cleaning it and reassembling it, I pass on something from a very experienced manufacturer who got it from a repairer:

50/50 lanolin and vaseline.

Cheers,

R.

 

[chenick]

I was advised previously to use lithium grease (got a tube from a bike repair shop).
Worked great in my Jupiter 8 and Industar-61.

Regards,

Nick

 

[erikhaugsby]

Astroglide!

😛

 

[giovatony]

Just to add to the general consensus I use white lithium too .
John

 

[ZorkiKat]

Vaseline and lanolin can run in hot weather, and cause the oils to migrate in places where they are not wanted.

Most FSU lenses don't have helical threads as fine as those found in other lenses- they require the dampening action of heavier greases to give a movement with less play and some slack.

I use automotive axle grease with some of the LTM Jupiters, particularly the Jupiter-9.

Jay

 

[Rey]

Thanks everyone,

I narrowed it down to the Wax-based bicycle lube and the Lithium grease. I hade the bicycle lube at home, so I used it. it's still a little stiff, but it should not run off into the lenses or blades.

 

[newspaperguy]

Apologies - I mispoke!

Apologies - I mispoke!

Get a tube of silicone grease.

Usually found carded at any auto supply store.

Check out the Kiev Survival Site.

Sorry, I looked this weekend and realized that I too am now using a
WHITE LITHIUM grease. (Obviously, not very often.) PERMATEX brand.

I USED to use a silicon fortified automobile wheel bearing grease... also very high temperature tolerant.

(sigh) Another senior moment.