Beam torque wrench questions

[IDidntDoIt]

I like beam torque wrenches (deflecting beam) more than the clicker type whenever it's possible to use them. I was wondering, do these type lose calibration? I've heard you just need to reset them to zero, but I never have to because mine always stay at zero even when I torque them to the extents of the range. Also, are there any that range up to 200 or 250 ft lbs?

 

[Charles (in GA)]

Essentially, what my employer's in house torque wrench calibration people told me a long time ago, is that as long as the torque wrench has not had its capacity exceeded, it will never lose calibration.

Same is true for dial type, as they are nothing more than a beam type in a housing with dial mechanism attached to them.

As far as how big they go, the skys the limit.

Sturtevant Richmont makes them up to 300 lb/ft in 3/4 drive

Warren & Brown Precision Tools in Australia makes deflecting beam torque wrenches up to 750 lb/ft. These are a hybrid tool that uses a deflecting beam but no scale or dial to read, rather it has a slider you set on a scale to the torque you wish to go to, and it clicks when you reach it. Still, its a deflecting beam tool at heart.

Charles

Charles

 

[vssjim]

The only thing that even happens to bending beam wrenches is the pointer gets bent and just bend it back to zero when its at rest. I have never seen one check off and don't need to be tested unless massive abuse has happened just restraighten the pointer and move onward.

 

[IDidntDoIt]

Thanks for the replies guys. Just what I was looking for

 

[rsanter]

I have a thorsen I could sell if your interested

bob