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I have a piece of mahinery with a grease fitting in an awkward to reach place. The fitting is of this shape ...

enter image description here

... but not screwed into place but pressed. So we can't have it removed and replaced with a pipe leading to a more accessible place. My question is: Can I mount a tube to the fitting in a way that it stays there for the foreseeable future (a few years)? Grease will be applied twice a year. I have doubts that simply pushing a tube over the fitting and applying a clamp will suffice, as greasing will put some pressure on the thing. Any ideas?

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Your problem appears to have a commercial solution. Using the Google, I searched for "locking grease coupler" and found a number of products with guaranteed no-leak connections.

https://locknlube.com/ appears to be using fittings with a release mechanism that can be separated from the attached hose, or perhaps the other end of the hose can be modified for your specific application.

locking coupler

https://www.gurtech.co.za/locknlube-grease-coupler/ references a locking seal up to 690 bar / 10,000 psi with no release or leaking. It also appears to have a threaded joint to which other hoses could be attached.

locking fitting

It's feasible to consider that the locking lever can be removed if access is tight/restricted, as long as the spring forces are not modified in the process.

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  • $\begingroup$ Between asking this question and your answer, I reached out to a supplier and was told the same - though they stress that a long term guarantee, that the coupling wil remain in place, can not be given. I'd advise against such a solution when the grease fitting can't be seen while applying grease, but for my application it's ok ... $\endgroup$ – mart Mar 21 '18 at 15:47
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Did you also consider a 90 or 60 degree grease fitting. It would be a cheaper solution to piping to a remote manifold.

https://www.mcmaster.com/#grease-fittings/=1c3ojei

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