Hammer Mill: 3 hp 220v 1ph electric motor. 3mm, 4mm, and 6mm (installed) screens included. ... $6,995.00 with the 22hp Diesel Model 420 Hammer Mill. Price does NOT Include Shipping! ... Wood Pellet Demo Machine Specials USED 8" die Pellet Mill with 7.5 hp 220v three phase electric motor.