Click Type Torque
Click Type Torque
(OP)
Hi All,
I have a question regarding click type torque wrench. Our assembly shop utilises a click type torque wrench Which has a removal head. Beacuse of a design constraint we had to design a head. The head was longer than the standard heads. Does it affect the torque applied. We are supposed to apply a torque of 70 lbf-ft. Being slightly longer, i would expect the torque applied to be higher as well. Am i right in saying that or because it a click type torque wrench, will be torque still be 70 lbf-ft though the head is higher?
I have a question regarding click type torque wrench. Our assembly shop utilises a click type torque wrench Which has a removal head. Beacuse of a design constraint we had to design a head. The head was longer than the standard heads. Does it affect the torque applied. We are supposed to apply a torque of 70 lbf-ft. Being slightly longer, i would expect the torque applied to be higher as well. Am i right in saying that or because it a click type torque wrench, will be torque still be 70 lbf-ft though the head is higher?





RE: Click Type Torque
Mike Halloran
Pembroke Pines, FL, USA
RE: Click Type Torque
In other words, it's still calibrated.
Any way you can do a quick check which of course is not the same as a calibration?
RE: Click Type Torque
RE: Click Type Torque
The following calculator will get you within horse show range.
http://www.cncexpo.com/TorqueAdapter.aspx
RE: Click Type Torque
In my earlier response I was thinking of this type, a torque limiting screwdriver:
ht
RE: Click Type Torque
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Click Type Torque
Harold
SW2009 SP4.0 OPW2009 SP2 Win XP Pro 2002 SP3
Dell 690, Xeon 5160 @3.00GHz, 3.25GB RAM
nVidia Quadro FX4600
www.lumenflow.com
RE: Click Type Torque
New torque = torque setting * new length / old length
For "analog" wrenches, getting the length is easy, measure from center of socket to the pivot in the handle.
For click-type, I'm not sure how to find that point, as it is concealed inside the handle. You might just need to set up a test apparatus.
RE: Click Type Torque
In the few click type wrenches that I have owned, the "Click" pivot is an easily visible pin where the handle joins the head.
http://ww
In the posted link, you can see the pivot pin very close to the head. I believe that this is the point from which to measure the new distance to the center of the bolt when recalibrating for an adapter that changes the working radius.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Click Type Torque
Do not use breakaway torque to calibrate anything as it can be many times the applied torque.
RE: Click Type Torque
True, breakaway can be many times the applied torque. I made some assumptions about the screw head type based on my own experiences. If you have confidence in the calibration or reference standard, would that matter? If the goal is to verify the modified wrench it would seem that a correlation could still be made. A screw in a plate is a pretty cheap test apparatus (although it might not be what the Tick had in mind).
Harold
SW2009 SP4.0 OPW2009 SP2 Win XP Pro 2002 SP3
Dell 690, Xeon 5160 @3.00GHz, 3.25GB RAM
nVidia Quadro FX4600
www.lumenflow.com
RE: Click Type Torque
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Click Type Torque
If your need results to be very accurate I would get one to a claibration machine and look at the results.
Another way is to buy a torque wrench with interchangeable head tools.
waross,
Did you ever calibrate the beam type torque wrench?