At 17 ton it sounds like he's using a 4" cylinder running at 2700 psi pressure? It seems most folks run the 4" cylinder at 2550 psi for a comfortable 16 ton. When he mentions his ips, asked about pump volume - it will take around 12 gpm for 3.7 ips extend speed.
Here's a couple of calculators to play around with:
https://www.baumhydraulics.com/images/calculators/cyl_calc.htm (cylinder size)
and
https://www.baumhydraulics.com/images/calculators/cyl_speed.htm (ips calculator)
They're fun to play around with and give decent results for understanding cylinder and pump requirements. I do wish I'd found these before ordering the "9 ton" Coal Iron press. At least I would have know I was getting 9 ton rather than the advertised 12 ton. I am pleasantly surprised how well 9 tons actually work for forging.
Good luck and have fun.
Here's a couple of calculators to play around with:
https://www.baumhydraulics.com/images/calculators/cyl_calc.htm (cylinder size)
and
https://www.baumhydraulics.com/images/calculators/cyl_speed.htm (ips calculator)
They're fun to play around with and give decent results for understanding cylinder and pump requirements. I do wish I'd found these before ordering the "9 ton" Coal Iron press. At least I would have know I was getting 9 ton rather than the advertised 12 ton. I am pleasantly surprised how well 9 tons actually work for forging.
Good luck and have fun.