I've been looking at log splitters, but haven't decided what to do yet so I stopped in at Northern Tools today and looked at their log splitters. They had a really massive one rated at 37 tons. 8 bolts on each side of the slide. Heavy duty beam, large diameter cylinder. I looked more closely and am now confused, so help me out here and tell me what I'm missing:
The cylinder is 4.5" diameter, so 15.9 sq in of surface. Couldn't find the spec for the pressure, but the high pressure hose was rated for 4000 psi, meaning the actual pressure is probably a little less, but I'll use 4000.
Thus 15.9 times 4000 = 63,600# = 31.8 tons.
Where are they getting the 37 tons (74,000#)? The pressure would have to be 74,000/15.9=4654 psi. That's an over pressure of the hose by 15%. What am I missing?