Force Needed

[ZepBal]

Hello everyone,

I'm needing to stop a horizontal movement of a 1" diameter steel rod that's being pulled at 8500ft/lbs

My initial plan is to use 4 hydraulic steel clamps, placed vertically opposite of each other making a cross to clamp the part, that each put out 3000 ft/lbs.

Is this enough force to stop the movement? What am I missing?

Thanks in advance for your help!

 

[itsmoked]

Need a sketch of the setup showing forces and directions. Text doesn't really cut it.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[Compositepro]

ft-lbs is not a unit of force. Do you mean torque? Even then the question does not make sense.

 

[ZepBal]

My apologies, does this help clarify?

 

[BrianE22]

Statically, you are not even close. If you use a coefficient of friction of .1 then the max axial force it would hold would be 4 x 4067 x .1 = 1627 N.

 

[ZepBal]

Darn, back to the drawing board. Glad I asked here before buying components. Thanks for the help!

 

[enginesrus]

If that was clamped in a large lathe chuck it would hold that, of course having serrations to help "grip" the rod would also help.
So what is the application? Does the rod need to be removed after clamping it or is it fixed?
Using a collet system would work as well, having the taper lock so that it tightens as the force is applied.

 

[tmschrader]

Actually it would be 2 x 4067 x .1= 813N
I would use .2 to be safe.