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| Where does one get his torque wrench calibrated??
"If you’re a leader, you lead the way. Not just on the easy ones; you take the tough ones too…” – MAJ Richard D. Winters (1918-2011), E Company, 2nd Battalion, 506th Parachute Infantry Regiment, 101st Airborne
"Woe to those who call evil good, and good evil... Therefore, as tongues of fire lick up straw and as dry grass sinks down in the flames, so their roots will decay and their flowers blow away like dust; for they have rejected the law of the Lord Almighty and spurned the word of the Holy One of Israel." - Isaiah 5:20,24 |
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| quote: Originally posted by erj_pilot:
Where does one get his torque wrench calibrated??
Give Transcat a call. If they’re too high I’m sure there are a few others in Houston. https://www.transcat.com/calib...que-calibration-labs
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The fool hath said in his heart, There is no God. Psalm 14:1
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| | | Posts: 3969 | Location: Northeast Georgia | Registered: November 18, 2017 | 
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| I used to hear "never use the top 10% or bottom 10% of any torque wrench, for best accuracy". Not sure if that applies nowadays or not? |
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| quote: Originally posted by PowerSurge: quote: Originally posted by erj_pilot:
Where does one get his torque wrench calibrated??
Give Transcat a call. If they’re too high I’m sure there are a few others in Houston. https://www.transcat.com/calib...que-calibration-labs
What kind of ballpark fee do these calibration firms charge for calibrating your run of the mill torque wrench?
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Eddie
Our Founding Fathers were men who understood that the right thing is not necessarily the written thing. -kkina
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| | | Posts: 6324 | Location: In transit | Registered: February 19, 2013 |
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| quote: Originally posted by PowerSurge:
Give Transcat a call.
Thanks! Just sent in an online request for a quote...
"If you’re a leader, you lead the way. Not just on the easy ones; you take the tough ones too…” – MAJ Richard D. Winters (1918-2011), E Company, 2nd Battalion, 506th Parachute Infantry Regiment, 101st Airborne
"Woe to those who call evil good, and good evil... Therefore, as tongues of fire lick up straw and as dry grass sinks down in the flames, so their roots will decay and their flowers blow away like dust; for they have rejected the law of the Lord Almighty and spurned the word of the Holy One of Israel." - Isaiah 5:20,24 |
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| quote: Originally posted by smlsig:
What kind of ballpark fee do these calibration firms charge for calibrating your run of the mill torque wrench?
We pay $75 once per year for ANSI Z540 calibration on our 250 ft/pd wrenches. With that calibration they are certified to be used on government jobs.
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The fool hath said in his heart, There is no God. Psalm 14:1
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| | | Posts: 3969 | Location: Northeast Georgia | Registered: November 18, 2017 |
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A day late, and
a dollar short
| I retired from a major natural gas distribution company that fell under DOT rules and regs, in my line of work we had to use certified torque wrench's quite often. Company had to pay to get them calibrated yearly, not once did my torque wrench come back stating it was found out of spec, it was always spot on, year after year, no adjustment needed. Just saying if you are not required to have them certified, don't bother.
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NRA Life Member, Annual Member GOA, MGO Annual Member
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| quote: Originally posted by Warhorse:
I retired from a major natural gas distribution company that fell under DOT rules and regs, in my line of work we had to use certified torque wrench's quite often. Company had to pay to get them calibrated yearly, not once did my torque wrench come back stating it was found out of spec, it was always spot on, year after year, no adjustment needed. Just saying if you are not required to have them certified, don't bother.
That may be so, but if they aren’t sent off for calibration, you really don’t know if they’re accurate. I do know that ours have been adjusted when sent off for calibration. How often I couldn’t tell you.
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The fool hath said in his heart, There is no God. Psalm 14:1
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| | | Posts: 3969 | Location: Northeast Georgia | Registered: November 18, 2017 |
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| To be honest, about the ONLY thing I use my torque wrench for is properly seating the lug nuts on the wheels when I rotate my tires at home. Sooooo just how critical is it if my wrench is off a little bit? I use 80 ft/lb torque on both cars.
"If you’re a leader, you lead the way. Not just on the easy ones; you take the tough ones too…” – MAJ Richard D. Winters (1918-2011), E Company, 2nd Battalion, 506th Parachute Infantry Regiment, 101st Airborne
"Woe to those who call evil good, and good evil... Therefore, as tongues of fire lick up straw and as dry grass sinks down in the flames, so their roots will decay and their flowers blow away like dust; for they have rejected the law of the Lord Almighty and spurned the word of the Holy One of Israel." - Isaiah 5:20,24 |
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Nullus Anxietas
| I'm curious about this re-calibration thing. Is it not repeated exercising of springs that causes them to weaken? So if your torque wrench spends most of its time sitting in a drawer, set to zero, and is used only infrequently, would it not be inclined to retain accuracy for a good, long while?
"America is at that awkward stage. It's too late to work within the system,,,, but too early to shoot the bastards." -- Claire Wolfe
"If we let things terrify us, life will not be worth living." -- Seneca the Younger, Roman Stoic philosopher |
| | | Posts: 26009 | Location: S.E. Michigan | Registered: January 06, 2008 |
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| quote: Originally posted by erj_pilot:
To be honest, about the ONLY thing I use my torque wrench for is properly seating the lug nuts on the wheels when I rotate my tires at home. Sooooo just how critical is it if my wrench is off a little bit? I use 80 ft/lb torque on both cars.
If that’s all you use it for, I wouldn’t waste my time calibrating it.
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The fool hath said in his heart, There is no God. Psalm 14:1
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| | | Posts: 3969 | Location: Northeast Georgia | Registered: November 18, 2017 |
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| quote: Originally posted by ensigmatic:
I'm curious about this re-calibration thing. Is it not repeated exercising of springs that causes them to weaken? So if your torque wrench spends most of its time sitting in a drawer, set to zero, and is used only infrequently, would it not be inclined to retain accuracy for a good, long while?
It should, but you never know. If you’re just torquing wheels or things like that, I’m sure it’s ok for that. Torquing a cylinder head or other engine work, maybe, maybe not.
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The fool hath said in his heart, There is no God. Psalm 14:1
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| | | Posts: 3969 | Location: Northeast Georgia | Registered: November 18, 2017 |
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| There are torque wrenches that are pre-set at a single specific value, for specialized applications. Used a couple of these in the Air Force. Don't think they're very common, though. |
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| quote: Originally posted by Greymann:
Last shop I worked at had a "standard lab". We calibrated torque wrenches for ourselves and for Sandia Labs and the Airforce weapons lab.
The torque wrenches were mostly snapon and proto and rarely needed any adjustments if the wrenches were set back to zero and kept in their case.
The torque wrenches that were set and locked at a certain value would sometimes require small adjustment.
Now and then someone would bring in a chicom wrench to be checked. The wrench may check good at 40 lbs but be off at 75 lbs. The only fix was to set torque at the value needed.
Correction...Airforce weapons lab name was too scary, now called Airforce research lab.
That’s been my experience with the China Freight wrenches. They’re accurate at one setting but off at another. I showed a friend of mine this with his China Freight torque wrench with my digital torque adapter and he threw it in the trash can. 
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The fool hath said in his heart, There is no God. Psalm 14:1
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| | | Posts: 3969 | Location: Northeast Georgia | Registered: November 18, 2017 |
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Savor the limelight
| Are there two different processes; certification and calibration? Is there another process that gives you a piece of paper that shows a table of what your wrench was set for vs what torqued it actually applied? |
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| quote: Originally posted by PowerSurge:
If that’s all you use it for, I wouldn’t waste my time calibrating it.
I believe you are absolutely correct, Mr. Surge. I got a quote back from Transcat and they quoted $52.65 for a "Calibration w/o Data" (whatever "w/o Data" means). PLUS I'd have to ship it to Fenton, MO...thought we had a lab here in Houston that could do the calibration. I think I'll be fine using it 4x per year, at most, to tighten some lug nuts. Thanks for the great info, everyone!!
"If you’re a leader, you lead the way. Not just on the easy ones; you take the tough ones too…” – MAJ Richard D. Winters (1918-2011), E Company, 2nd Battalion, 506th Parachute Infantry Regiment, 101st Airborne
"Woe to those who call evil good, and good evil... Therefore, as tongues of fire lick up straw and as dry grass sinks down in the flames, so their roots will decay and their flowers blow away like dust; for they have rejected the law of the Lord Almighty and spurned the word of the Holy One of Israel." - Isaiah 5:20,24 |
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