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torque wrench calibration

There's a place that calibrates just about everything in my plant...when I need it done I bring them in when their calibrating our stuff and they ship them back to me once they're done.
 
ie: Ask local businesses that deal with weights and measurements in the production of their products.

There's NO ONE within 3 hours who does calibration but one day it occurred to me that the guys who do our scales and calipers probably do other things as well.
 
We use torque wrenches every day for every single fastener that builds a satalite. including DC connectors, RF cable connectors. We have calibration checkers at work, and have to check our Torque wrenches before every torque value used. I can take mine to work.
 
all of our stuff at work has to be calibrated as well, but im not sure where they send it, and if they could do mine or not,
just thought some place in town or online might do it
 
surpip said:
all of our stuff at work has to be calibrated as well, but im not sure where they send it, and if they could do mine or not,
just thought some place in town or online might do it
Click to expand...
There's a PMEL shop on base where everything gets calibrated. At every base I've been too, they'd let you come in with your torque wrench and teach you how to do it. I've heard that the military has been going private contract with the stuff and that being so, they won't let you in anymore. I need to get a couple of mine done, so I was going to check it out. I'll let you know what I find out.
 
You can calibrate them yourself if you know how to adjust it and don't mind it being off a couple percent. Just hold the drive in a vice with the handle horizontal and hang a series of known weights from the end. If the wrench is 18" from the center of the drive to the spot on the handle where you hang a 100lb weight, you have applied 150 ft-lbs. (1.5ft x 100 lbs). For beam and dial types you can read them directly, for click types just set the wrench one notch below the torque you are applying and make sure it doesn't click, then set if for the torque you are applying and ensure it clicks. If it is off you will need to figure out how to adjust it and retest. I have done this with my cheap craftsman click style torque wrench a couple times and feel comfortable that it is accurate enough for my needs.
 
ARAMP1 said:
There's a PMEL shop on base where everything gets calibrated. At every base I've been too, they'd let you come in with your torque wrench and teach you how to do it. I've heard that the military has been going private contract with the stuff and that being so, they won't let you in anymore. I need to get a couple of mine done, so I was going to check it out. I'll let you know what I find out.
Click to expand...
sweet man, let me know
 
BGKYK5 said:
You can calibrate them yourself if you know how to adjust it and don't mind it being off a couple percent. Just hold the drive in a vice with the handle horizontal and hang a series of known weights from the end. If the wrench is 18" from the center of the drive to the spot on the handle where you hang a 100lb weight, you have applied 150 ft-lbs. (1.5ft x 100 lbs). For beam and dial types you can read them directly, for click types just set the wrench one notch below the torque you are applying and make sure it doesn't click, then set if for the torque you are applying and ensure it clicks. If it is off you will need to figure out how to adjust it and retest. I have done this with my cheap craftsman click style torque wrench a couple times and feel comfortable that it is accurate enough for my needs.
Click to expand...
I guess that'd work for a ballpark wag, but I figure that if I spent the money on a nice torque wrench and I'm spending the money on quality engine parts, I want to know that when I torque them to spec they're as close as posible.
 
mine was free from work, i just want to make sure its accurate before i use it on anything important
 
we have a company that send a mobile calibration truck to our facility for 2 weeks every year. company equipment gets done and all personal torque wrenches are supposed to be done yearly. on the company dime........
 
I just had mine done by a place called AA Jansen in Waterford, MI. Not cheap but at least I know that they are actually calibrated now.
 
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