REAL MAN TRUCKWORKS & SURVIVAL
GENERAL TOPICS => D.O.T. => Topic started by: husker77c on September 01, 2015, 07:53:46 PM
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On a 2.5" bolt.
I got moved around to supervise another crew today and thought you guys might like to see this.
(http://i.imgur.com/WJHNOQk.jpg)
Air over hydraulic torque wrench.
(http://i.imgur.com/u5a9iwb.jpg)
28 bolts on each side of a 36" main line valve. This line will run upwards of 1500PSI when in service.
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My torque wrench only goes to 200....wow.
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Cool. We've got the hydraulic only hi-torques at work. Do t know the numbers on some of the generator bolts but they are rediculous. I think it's a 7" or something huge socket.
Neat to see the other stuff with crazy torque values.
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That's about as big as we go for bolting applications. I think that was a 3 7/8" socket. We sometimes have to tension the bolt instead of tourqeing. Have a machine that gradually stretches the bolt them the nuts are threaded up tight.
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That's about as big as we go for bolting applications. I think that was a 3 7/8" socket. We sometimes have to tension the bolt instead of tourqeing. Have a machine that gradually stretches the bolt them the nuts are threaded up tight.
That's some big torque
I was trying to look up the torque on the main rotor hub for a Chinook rotor system.
Yup, one nut holds the whole mess on there. It's called the "Jesus nut"
They use some sort of crank torque multiplier which generates thousands of ft/lbs necessary to put a tighten' on that single nut.
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I actually just saw something about that Jesus nut come across my FB the other day. I follow a bunch of aviation pages on there. It's mind boggling to think that the whole mess is held on with one nut.
We've used the multipliers on some bolt ups I've done in the past. Our multiplier was made by CAT and the torque wrench they use on those is about 4' long.
I would hope the Jesus nut on a helicopter I'm in was definately good and tight haha.