What grease for all metal oldhamn coupling

[PekkaNF]

There is a miniscule oldhamn coupling between electric motor 1500 or 3000 rpm and 0,55 or 0,75 kW. The coupling part is really small 14/10 mm diameter and looks like hardened steel.

What kind of grease goes for it?

Pekka

[awemawson]

What ever spec it needs to be a very 'clingy' grease to not be flung out at that speed. I've recently bought a tube of specially formulated 'chuck grease' that probably has the right characteristics - basically a white lithium grease but made to be very tenacious. Downside is it's a very silly price - that standard grease cartridge was £27.70 plus carriage and VAT

http://www.schunk.com/schunk/schunk_websites/products/products_level_3/product_level_3_lathe_chucks/product_level_3_lathe_chucks_accessories_2.html?product_level_1=245&product_level_2=264&product_level_3=7776&country=INT&lngCode=EN&lngCode2=EN

[PekkaNF]

Jeah, I know what you mean. I do have some very adhessive grease that does not separate, but NLGI is only 1, it's not very viscous. I think that pressures are very large, but movement is very small even close to fretting/scuffing.

Effective dia is only 13-14 mm and "key" is 4,52 x 8,00 mm and 7,1 x 5,12 mm.

Electric motor shaft is D14 mm and key 5x5 mm.

Pekka

[awemawson]

If we could think of a way of safely getting it to you, you'd be welcome to a little squeeze of it.

[tom osselton]

Would a chain lube work better?

[kayzed1]

You beat me to it Tom,
yes chain lube, apply warm and let it run in to all nooks and dodars, leave 24 hours for no fling:::well very little fling Worth do a good one.

[PekkaNF]

Thank you for the ideas.

Got 10 ml of Klüber ALTEMP Q NB 50 assembly paste from machine shop. it should do the trick.

Pekka