Todd, you can use a 3" pneumatic cylinder and 8" stroke. 3/4" shaft. This is running a 36"shear and cuts 24ga ss. I have a 110 psi air line for this shear. If you want to shear thicker material increase the pressure or the diameter of the cylinder. Use the formula P=F/A
If I remember my physics correctly, if you use a 3" diameter cylinder (7.07 square inches) and pressurize it to 110 PSI, you will generated 110 x 7.07 = 778 lbs force. That is almost like 4 men standing on the stomp bar. I think that's a bit excessive. Might use a 2.5" cylinder with about 540 lbs of force. Problem is you probably need a stroke length of 15".
Hi Alberto, this is exactly what I want to do to my stomp shear. When I look on line it gets very confusing on parts. I know I need a cylinder and a foot pedal and I already have an air tank. My question is do I need regulators or is teh foot pedal a regulator and if so what kind and are you suing double action cylinders or single? Thanks, Rick
This is amazing
It's like a big secret, everyone at home wants to do this mod but yet again another video with out any specs.
Without the finger guard holding the metal down at stop. How does this work properly. My is having issue
what are the specs on the cylinder? I can't find the ratings on any of them that will tell me how many pounds they will push out
Todd, you can use a 3" pneumatic cylinder and 8" stroke. 3/4" shaft. This is running a 36"shear and cuts 24ga ss. I have a 110 psi air line for this shear. If you want to shear thicker material increase the pressure or the diameter of the cylinder. Use the formula P=F/A
If I remember my physics correctly, if you use a 3" diameter cylinder (7.07 square inches) and pressurize it to 110 PSI, you will generated 110 x 7.07 = 778 lbs force. That is almost like 4 men standing on the stomp bar. I think that's a bit excessive. Might use a 2.5" cylinder with about 540 lbs of force. Problem is you probably need a stroke length of 15".
You have to keep in mind also the retracted length of the cylinder.
Hi Alberto, this is exactly what I want to do to my stomp shear. When I look on line it gets very confusing on parts. I know I need a cylinder and a foot pedal and I already have an air tank. My question is do I need regulators or is teh foot pedal a regulator and if so what kind and are you suing double action cylinders or single? Thanks, Rick
My pressure is set at 80psi. The foot pedal is a valve only. The cylinder is double action.