I am building a ground pushing and pulling probe similar to the pic attached. A probe rod is hydraulically clamped and held in place using a split clamp jaws that have a pyramid grip pattern made from hardened tool steel 58HRC similar to the pics. That paticular machine (in the picture) can hold upto 200kN of push/pull force. My question is how do I calculate the size and force of the hydraulic cylinder to hold a similar load 200kN? The jaws will be approx. 150mm high and match the dia. of the probe pipe which is 36mm 30-40HRC. The pyramid serrations will be as per the pic 1.2 x45deg.
Thanks for looking and any suggestion are much appreciated and welcome.
Thank you kindy.