TractorByNet.com - View Single Post

J_J · 01-07-2009, 10:59 AM

At 18 GPM PTO, a 540 rpm hydraulic motor with a torque of 3,678 in lbs to drive 3pt implement, would need to be 7.7 cu in displacement , and pumping 18 GPM at 3000, would take 37 HP. The efficiency of hydraulic pump to motor is 85 %. This is assuming that hoses are short and sized correctly and QD's if used are sized one sized larger. If you want to know exactly what you have when finished, put a pressure gage and a flow meter in the line and you will know.

01-07-2009, 10:59 AM	#18 (permalink)
J_J Super Member Join Date: Sep 2003 Location: JACKSONVILLE, FL Posts: 5,060	Re: Mower deck hydraulic motor. At 18 GPM PTO, a 540 rpm hydraulic motor with a torque of 3,678 in lbs to drive 3pt implement, would need to be 7.7 cu in displacement , and pumping 18 GPM at 3000, would take 37 HP. The efficiency of hydraulic pump to motor is 85 %. This is assuming that hoses are short and sized correctly and QD's if used are sized one sized larger. If you want to know exactly what you have when finished, put a pressure gage and a flow meter in the line and you will know. __________________ J.J. When I works, I works hard. When I sits and thinks, I goes to sleep. Git er done, if-fen you want to..