steve m
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| posted on 10/5/11 at 11:23 PM |
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Re calibrating a torque wrench
I picked up my torque wrench earlier that has been sitting on its own in my garage,for years, and somehow the lock screw has undone itself rending the
whole unit as scrap
Is there any where i can get it recalibrated ??
Im not sure of the make, but it was not cheap!!
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Ninehigh
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| posted on 11/5/11 at 12:20 AM |
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Didn't know they could be recalibrated, but if you can borrow one why not try putting it back together and see if it's still good?
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HowardB
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| posted on 11/5/11 at 06:18 AM |
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Cromwell tools in Leicester offer a re-calibrating service,..... but that is "not cheap",..
what range is it,... perhaps you can make a balance to calibrate it,... not a practical solution for anything over about 100Nm,..
Howard
Fisher Fury was 2000 Zetec - now a 1600 (it Lives again  and goes zoom)
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cliftyhanger
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| posted on 11/5/11 at 06:36 AM |
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I checked one by clamping the square drive "peg" in a vice, and then used bathroom scales as I turned it to measure the force. Remember
1kg=9.8N (usually rounded to 10). then go the calculation.
Should get it pretty close
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rgrs
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| posted on 11/5/11 at 06:37 AM |
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have a look at :
SANDVIC - Calibration Analyzer Torque tester - V G Con | eBay UK
There are digital calibration units that come up time to time, but they are normally a lot more money.
Roger
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02GF74
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| posted on 11/5/11 at 09:45 AM |
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put bolt in steel plate with a nut on. tighten using a long bar of known length with weight (e.g. 2.0 l bottle of water) hanging off the bar to get
the lb/ft.
reassemble the torque wrench, set to scale to the above and tighten nut - then you will see if the troque wrench is under or over reading.
probably done best for low, mid and top ranges of the wrench.
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designer
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| posted on 11/5/11 at 09:48 AM |
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Just bin it and get a new one, they are so cheap now, it's cheaper than re-calibrating.
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