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Torque Wrenches, do you calibrate them?

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Old Jul 12, 2008 | 07:16 PM
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Default Torque Wrenches, do you calibrate them?

I just had my 5 year old craftsman done and it was registering 5 punds over at 80ft/lbs. So I asked to do a lower torque, 64 as this is for rod bolts, and it was 3 over. So, something to think about when everyone has there perfect special secret torquing methods.
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Old Jul 15, 2008 | 02:35 PM
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I found out the hard way when my Hobo Fake TW snapped 2 rad bracket bolts off in a row. My old HF wrenches were nearly 20ft-lbs off. Lucky i can cal them at work as i don't know where to get them cal'd elsewhere.
But if you want trouble free torque wrenchs the old beam wrenchs are hard to beat. Beam wrenchs will keep a good cal for a long time unless dropped or bent. And sometimes its kinda nice to measure break-free torque that u can't do with most other TW's (cept maybe dial types). But beam wrenchs are difficult to use in some locations.
Caught a pair of Craftsman beam wrench on sale for ready spares now.

cardo0

Also: i see a lot more Angle Torque Meters used now - claimed to be more accurate. Heck even Auto Zone sells'm cheap and they use much less tool box space than a TW.

Last edited by cardo0; Jul 15, 2008 at 02:38 PM. Reason: one more thing
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Old Jul 16, 2008 | 11:52 PM
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this is why i bought a digital torque wrench. they supposedly never need calibrating.
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Old Jul 17, 2008 | 12:39 AM
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Originally Posted by 502c2
this is why i bought a digital torque wrench. they supposedly never need calibrating.
Most torque wrenches maintain very good calibration. We, at the US NAVY shop I work in, do torque wrenches all the time. Calibrating that is. We need to due to QA/SOC/SS stuff.
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Old Jul 22, 2008 | 08:14 PM
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all aviation shops are required by the FAA to calibrate their tq wrenches
every 6 months for that same reason.
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Old Jul 22, 2008 | 10:36 PM
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Originally Posted by pmj341
all aviation shops are required by the FAA to calibrate their tq wrenches
every 6 months for that same reason.
We do teh same, and we have to cycle the wrench five times prior to use. Our aviation friends are probably the same when it comes to QA etc for safety.
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Old Apr 30, 2009 | 04:16 AM
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We always advise that they are still calibrated. Some digital devices we have tested have been quite off.
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Old May 3, 2009 | 07:14 AM
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they supposedly never need calibrating. (http://www.xhcljx.com/eng)
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