Bolted connections, submerged in oil. How to ensure safety?

[iamjonlawrence]

I have a unique application where I need to mount a piece of machinery such that the mounting bolts will be inside a gearbox, submerged in oil, and subjected to heat (up to 100C) and vibration. This connection is critical to the function of the machine, and safety of the operators.

Any recommendations on how to ensure the bolts do not vibrate or become loose in such an environment?

[Kelly_Bramble]

Welcome to EE!

Look at the following:

Distorted thread locknut
Nylon Insert Lock Nut
Castlelated Lock Nut
Flange Lock Nut
Auto Lock Nut

Lockwire
Lockwire Installation #1

Lockwire Installation #2

[jboggs]

There are numerous mechanical methods. You might also contact Loctite for their recommendations.

[iamjonlawrence]

Welcome to EE!

Look at the following:

Distorted thread locknut
Nylon Insert Lock Nut
Castlelated Lock Nut
Flange Lock Nut
Auto Lock Nut

Lockwire
Lockwire Installation #1

Lockwire Installation #2

Thank you for the suggestions. The mounting uses Socket Head Cap Screws into threads cut in housing, so unfortunately any lock nut is not an option.
I had also considered the lock wire, which will definitely keep the bolts in place, but I have no experience with this method. These bolts hold pressure on a taperlock locking ring, so any loss in torque is not acceptable. Will the lock wire process guarantee no loss in torque?
(corporate firewall prevents videos, so I am unable to view the linked videos)

[iamjonlawrence]

... You might also contact Loctite for their recommendations.

For some reason I had in my head that the elevated temp. would rule out Loctite. Upon closer inspection, they now have high temp options. I have an inquiry out to see if the gear oil will be a factor. Thanks for the suggestion.

[Kelly_Bramble]

The mounting uses Socket Head Cap Screws into threads cut in housing

Can the housing be modified for thread locking inserts?