Torque wrench Calibration

[laloquera]

Anyone in here know how to calibrate a torque wrench?

[illinois_erik]

you need specialized equipment, or you can take a second torque wrench you know is good, double nut a bolt, set them the same and see where the "good" one clicks, a beam style would be better, you can see on the scale where it clicks and adjust your +/- percentage. But in other words, you the layman can not calibrate a torque wrench. call a local tool supplier, or maybe even a welding shop, they can direct you. or buy a new one lol.

[laloquera]

Bummer I think I will rent one. Buste a few bolts today.

[dhill_cb7]

Bummer I think I will rent one. Buste a few bolts today.

If you only plan to use it for this repair then I would rent one. I would call the store ahead of time to make sure it is not already rented. That would be annoying if you traveled there and the only option would be to buy one. If you plan to do more work yourself then I would invest in one. I picked one up a few years ago that was digital. Sears was closing on 69th street near where I work and I think *IIRC* it was around 75-135 range.

I recently invested into a non digital one that I have yet to break out of the package. I heard that the digital ones are harder to re-calibrate and since sears is out of business near my house I would have to travel to KOP I think to have this one serviced by them.

You do have options but the cheapest would be to rent one if you do not plan on doing anymore work. Sometimes though the work is not planned, it happens out of necessity. Good luck either way!

[lbus9168]

I have this weird digital adapter. 1/2" input and output. You put it on a standard breaker bar, and it makes a beep when you get close that gets faster.

Its pretty rad, it was cheap, and seems to work well.

[illinois_erik]

what are you needing to do? i bought a big ass 1/2 drive one that goes from 25 to 250 off amazon for like 60 bucks, mountain tool co or something, it has a nice hard case and as long as you dont beat things with it or drop it or store it set itll stay in calibration for years..baby it and itll last

for smaller jobs i picked up the harbor freight 3/8 drive medium sized torque wrench on sale for like 20 bucks..i was like well +/- 5 is livable hopefully on the high side of things, it does 5 to 80 or 90 i think?

anyway i set it to 40 and torqued a bolt down, i then set the large one on 40 and it was dead nuts..so, I treat them very well and my h22 hasnt thrown a rod yet lmao...



at the tire shop we used nicer snap on's with the little thumb wheel, dial and this metal flap you flip over to set them, well torquing 1000's of wheels a month they would go out of spec kind of fast.Itd cost ~100 bucks or more depending on needed parts to have them serviced..i think it was a design flaw. the click type with the scale on the handle like a caliper, are very precise and dont go out very fast as long as you take care of them. the next best type and cheapest, its very accurate, as long as you can read the needle, like say working on an engine on a stand..is the beam style. I dont like them i feel the click type are just as good and not that much more expensive these days.

[Fleetw00d]

While you may not be able to calibrate it yourself easily, you can check it. Mount the drive end in a vice (or put it on a nut or bolt) such that the handle is horizontal, then hang a known weight (or use a scale to apply load) at a known distance from the drive end to see if it clicks at the right value. This would at least allow you to adjust your setting to get the torque you want.

[illinois_erik]

I have this weird digital adapter. 1/2" input and output. You put it on a standard breaker bar, and it makes a beep when you get close that gets faster.

Its pretty rad, it was cheap, and seems to work well.

ive seen those before,theyre pretty neat, and fairly accurate when you can fit it into the area.

[Tishock]

A while back I took my torque wrench in to be calibrated. Then I purchased the HF digital adapter to test it and found it to very accurate. It worked so well that I used it to calibrate my other wrenches.

[laloquera]

In ended up renting a torque wrench.