1. Aluminium series Size: 01, 02, 03,04 Power: 0.18 to 1.5 kW Case in die-cast aluminum alloy 2. Cast iron series Size: 03,04,05,06 Power: 1.5 to 7.5kW Case in HT200 gray cast iron 3. Feature -Silent, vibration-free running – High efficiency – Bidirectional rotation -Control handwheel positionable on either side – Output speed with 4 pole motor: 0-950 rpm -Highest output speed to the lowest output speed: 5:1