britishtrident
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| posted on 1/2/11 at 07:00 PM |
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quote:
Originally posted by yozza
Hi
We use them a lot offshore as mentioned above. They are supposed to be used when tightening with a machined recess, usually with a gasket between
(valve flanges etc) the idea being you hit it until the note changes to a 'ring'. This tells you that both flanges are metal to metal and
the machined recess is compressing the spiral wound gasket correctly. Torque bars or torque multipliers are the more acceptable method but using a big
hammer with these is much more fun!!
Joe
Torque multipliers and a pull lift on the end of the handle. Oh happy days
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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daviep
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| posted on 1/2/11 at 07:03 PM |
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quote:
Originally posted by britishtrident
quote:
Originally posted by mcerd1
quote:
Originally posted by Flamez
I guess you smack it with a hammer, my type of tool lol.
you can also stick a bit of tube over the end of it and just use it like a giant spanner (obviously it needs to be a fairly strong / close fitting
tube)
the last time I saw them using a bar ~1.5m long
I'd never seen untill a year ago when I had to start designing structures that needed M42 bolts to hold them to the ground 
and aparently it hard to get 65mm spaners.....
When you get bolts that big i tends to be hydraulic bolt stretchers that are the weapon l of choice.
Bolt tensioning requires a lot of space above the bolt and also requires special bolts/studs which are extra long, a simpler solution is a hytorc head
(hydraulic spanner) such as this:
“A truly great library contains something in it to offend everyone.”
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mcerd1
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| posted on 1/2/11 at 07:07 PM |
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quote:
Originally posted by daviep
Bolt tensioning requires a lot of space above the bolt and also requires special bolts/studs which are extra long, a simpler solution is a hytorc head
(hydraulic spanner) such as this:
^^
I bet that isn't cheap !
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daviep
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| posted on 1/2/11 at 07:11 PM |
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quote:
Originally posted by mcerd1
quote:
Originally posted by daviep
Bolt tensioning requires a lot of space above the bolt and also requires special bolts/studs which are extra long, a simpler solution is a hytorc head
(hydraulic spanner) such as this:
^^
I bet that isn't cheap !
Couple of grand a pop plus a small hydraulic power pack to run it
Last job I was on the boys destroyed 3 in 3 days
“A truly great library contains something in it to offend everyone.”
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owelly
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| posted on 1/2/11 at 07:40 PM |
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Some of the replies on this thread have explained why the H and S have had a party with flogging spanners! And there I was thinking it was because
there is a safer way to tighten big stuff, rather than use a big 'ammer........
http://www.ppcmag.co.uk
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gazza285
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| posted on 1/2/11 at 08:40 PM |
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We use these babies.
http://www.tcbolts.co.uk/
I've broken a 1" drive strong arm trying to undo the wheel nuts on one of our forklifts, had it hooked onto the 70t overhead crane, still
ended up burning two nuts off, and we've sheared the centre off the torque multiplier so many times the money men refuse to have it fixed.
DO NOT PUT ON KNOB OR BOLLOCKS!
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mcerd1
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| posted on 1/2/11 at 11:38 PM |
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quote:
Originally posted by gazza285
We use these babies.
http://www.tcbolts.co.uk/
I've broken a 1" drive strong arm trying to undo the wheel nuts on one of our forklifts, had it hooked onto the 70t overhead crane, still
ended up burning two nuts off, and we've sheared the centre off the torque multiplier so many times the money men refuse to have it fixed.
my dad got himself one of these for his lorries about 12 years ago:
linky (and I know
forklifts can be alot tighter than that...)
its only a machine mart one (I'm sure you can get better ones if you don't mind paying) needs alot of air to run, but it makes a hell of
difference
[Edited on 1/2/2011 by mcerd1]
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gazza285
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| posted on 2/2/11 at 07:08 PM |
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That's what we tried before hooking the strong bar to the crane, made a hell of a lot of noise, didn't undo the nuts though.
DO NOT PUT ON KNOB OR BOLLOCKS!
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