Posted by NCWayne on August 25, 2019 at 22:17:20 from (173.189.97.253):
In Reply to: Re: Lock Tite posted by Bob on August 25, 2019 at 20:13:41:
It's not flaming when it comes from folks who turn wrenches on construction equipment, rebuild cylinders, etc, for a living. In fact, it's just a fact of life for us.
That said, apparently you've never encountered a fastener that has been cleaned, had the right thread locker for the correct diameter applied, and then torqued properly....(and God forbid some idiot uses green retaining compound on anything threaded)...... Not only do they not 'shake loose' they don't come loose without a concerted effort, and often heat, just as others have stated.
Personally I've put my 1" drive IR impact (fed by a 75 CFM compressor pushing 150 psi) on 3/4 diameter fasteners and they didn't move. I followed up with a long handled 1" drive pull handle, with a cheater pipe, and they still didn't move....until I heated them.
I've also had nuts that you'd think would come loose with REAL tools, as you put it, twist off the bolt they were on, before breaking loose.
I've used my hydraulic torque wrench to break loose cylinder nuts that had retaining compound used on them, and were then torqued to 3000 ftlb. by the factory. I have a pressure guage, and chart, that I can use to tell what torque I'm applying to the fastener. I've topped my wrench out at 12,000 ftlbs, without the nut moving......If that happens, I'll heat it to loosen the thread locker. When I do that, it will typically break loose around 4000 ftlbs. Is that REAL enough for you?
Fasteners stay tight due to the friction occurring between the male and female threads. Locking style fasteners use a distortion of the fastener, or a 'plastic' locking ring, to raise the amount of friction, therefore the amount of force necessary to remove them. Applied properly to clean mating surfaces, retaining compounds step that up a notch, or two, by essentially turning the entire surface area of the fastener into a 'plastic' ring. They do that by filling in any space that may occur between the two surfaces. This raises the friction requirement to break them loose enough that it's not uncommon to have to use heat to get them break loose.
Again, this isn't meant to be a flame, I'm just relating facts. However if you are feeling burned, I'd suggest you spend more time listening to us guys who have 'been there and do that for a living' before you speak again and sound as silly as you think thread lockers are.
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