Spring Balancer ENDO EWF-30 ( 22-30 Kg ) / Endo Spring Balancer 30 KG Item Feature Weight (kg) 7.7 Stroke (m) 1.5 Wire Rope Diameter (phi mm) 4.76 Capacity Range (kg) 22 to 30 Purpose Suspension for motor apparatus, jigs, tools and workpiece materials. Centering operation. Suspension of cable maintenance robot. Balance equipment for various types of equipment.