1400W pure copper motor with 4-plunger cylinder. 22 tons punch force, 2-3 seconds per hole punching speed. 0.315 inch (3-8mm); #4-#8 angle iron? Equipped with 5 punching die sizes:? Fixed mode: Install base on platform and start with hand switch key. Handheld mode: Mount auxiliary handle for multi-angle punching in complex environments. Rest 10-15 minutes after continuous punching of 50-70 holes. Tighten bolts and screws after 300-500 punches, especially the sealing bolts between bracket and cylinder. Avoid punching hard metals in bad cold weather to protect the motor housing. 1 × ...