... hydraulic feed 2).8 inch 40hp 3).colors: green,blue,yellow,red,etc 4).others with 18hp,22hp,30hp diesel ... machine for sale. PTO type or diesel engine type.All of our products wood ... following are with diesel engine mobile wood chipper reduction box type, hydraulic feed type.modelrtwc-40rtwc ... -18max. dia. of feeding8”6”powerdiesel 480(40hp,4 cylinder,2000rpm)diesel ...