Seems like most manufacturers need to take a math class or/and business ethic class. There is a pressure rating limit on hydraulic components, and 3000psi or 200bar is a very common limit for components. Components rated higher than 3000psi make a huge jump up in cost. That’s why most splitters are built with components rated 3000psi or less. Most splitter are built with 4” and 5” cylinder diameters. 4”cylinder will push a 6.25 ton force for every 1000 psi system pressure 5”cylinder will push a 9.8 ton force for every 1000 psi system pressure As you can see it is impossible to get 34 tons out of 4” cylinder if pressure is less than 5370psi, or a 5” cylinder if pressure is less than 3460psi. Make sure you splitter have at least a 5” cylinder if you want to be even close to these bragging right splitting forces. Or maybe it is enough with a 12-16 ton splitting force???? Here are some examples where splitters are advertized with BS ton rating and simple math show it’s impossible. First let’s agree on how to calculate the splitting force. Cylinder Force,F, is the product , of system pressure, p, and the cross area, A, of the piston or the bore. F=pxA. Area on a circle is calculated as the diameter, D, by it self, D2, multiplied with Pi, 3.14, divided with 4. A=D2x3.14/4. Take a look at this NorthStar Horizontal/Vertical Log Splitter — 37-Ton http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200326296_200326296 3500psix5”x5”x3.14/4psi=34ton if the SYSTEM PRESSURE is 3500psi. It says the max pump pressure is 3500psi but that could be the max rating for the pump. WHAT IS THE SYSTEM PRESSURE?? It is still not 37 tons Next one. Log splitter Model # 9000 http://www.splitez.com/log_splitter_woodsplitters_9.html Ad says ”34 TONS OF SPLITTING FORCE”. The cylinder is rated 3000psi, they don’t tell the system pressure, which can’t be more than 3000psi. 3000psix5”x5”x3.14/4psi= less than 19.5 tons, which is just little more than half the 34ton rating. Last one. http://www.americanmsr.com/product-specs.htm All their splitters have a 2500psi system pressure. The 24 ton splitters have a 4” bore which give you a less than 16 ton force. They have one 25 ton and a 26 ton splitter with 5” bore which give you 24.5 tons. That ‘s almost acceptable. Half a ton off. Most manufacturers and retailer don’t show all “the cards” in their data sheets. And they know they are putting up BS tons on their splitters. I have checked about 20 different ads on splitters and only these three have provided enough data to do the math. So I think we need this business to start straighten up………Otherwise we will keep buying bigger and bigger splitters just for bragging rights and not for actual power force……. I have a feeling the cycle times are a little more accurate, checked a few briefly and they look close to OK, but I’m sure there are some sales people that didn’t pass the junior high school math to calculate the cycle time either…………….