Electric or Hydraulic torque wrench

Question

Electric or Hydraulic torque wrench

bkshaw (Mechanical)

(OP)

10 Dec 02 14:59

I have an application that I need to torque bolts to the 500 lb-ft range. I have been looking at hydraulic and some electric torque wrench websites. I am looking for some info/opinions on the two types from a user. I think that hydraulic will be too expensive for my limited use (once a month 30 bolts). Which brands are better?
Thank you
Brian

arto (Mechanical) · Answer 1 · 2002-12-10 17:50:14

Hytorc's work great http://www.hytorc.com/
Valve makers use little ones & turbine makers use big ones - be sure to use never-seez!

CoryPad (Materials) · Answer 2 · 2002-12-11 11:31:22

I don't have experience with hydraulic tools . According to their website, Hytorc tools are used to preload fasteners with zero torque. They are much slower - minutes per fastener.

Electric tools use torque to preload fasteners. They are much faster - seconds per fastener. Good suppliers for these are AtlasCopco and Stanley. You can learn more at the following sites:

http://www.atlascopco.com

http://www.stanleyworks.com/bu_airtools.asp

dugal (Nuclear) · Answer 3 · 2002-12-22 19:59:02

You can buy pnuematic torque wrenches as well as hydraulic and electric. There is also manual torque wrenches capable of this torque which is the cheapest of all. Depends a lot on how you want to torque the bolts. Are you going right up to 500 ft/lb or working your way up in 3 or 4 steps while also torquing other bolts in a sequence, such is done on a pipe flange.
If I was out in a field I would obviously use the hand wrench, in a shop with an air compressor I might use a pnumatic torque wrench.

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Electric or Hydraulic torque wrench