Model Z47 series automatic multi-station combined cold bolt former joint fair of cold heading machine and thread rolling machine in one body, make cold heading shape and thread become type, it is little covered and area of that efficiency is high, is th major production equipment for hex bolt, socket screw and flange bolt, etc. Model Z47 Three-Station Series Automatic Bolt Maker Model ZA47-6/3 ZA47-8/3 ZD47-12/3 ZA47-16/3B ZA47-16/3XL ZA47-20/3 Number of heading station 3 3 3 3 3 3 Heading force (KN) 450 800 1200 2500 2500 3150 Max. Cutoff dia (mm) ?8 ?10 ?14 ?20 ?20 ?24 Max. Cutoff length (mm) 80 120 150 210 285 220 Max. Shank dia (mm) ?6 ?8 ?12 ?16 ?16 ?20 Shank length under head (mm) 10-60 12-100 20-120 25-160 90-250 30-170 Max. Thread length (mm) 35 40 45 55 55 65 Max. Die kickout stroke (mm) 65 105 125 165 250 175 Max. Punch knockout stroke (mm) 12 16 25 32 25 32 Heading die pitch (mm) 65 80 110 130 120 150 Heading die hole dia. (mm) ?45 ?60 ?80 ?100 ?100 ?125 Punch hole dia. (mm) ?40 ?45 ?60 ?80 ?80 ?100 Main motor power (KW) 7.5 15 22 45 55 55 Output (pcs/min) 150 130 100/120 70 40 60 Net weight (kg) 6000 9000 23000 40000 60000 55000.