4K Mobilstack 4,000 LB. High Density Stacker Crane ACECO'S 4K MOBILSTACK Crane System improves productivity using only a single operator. FEATURES: . User friendly with 4 motion motorized movement . Aisle space requirements narrower than required by conventional forklift . Precise spotting due to maximum stability at high positions & minimum sway at any elevation . Mast mounted flood light for floor illumination . On-Board operators safety cage . Compatible with numerous forks & carriages and lifting attachments . Designed to run directly on top of racking eliminating additional support structures . 4000 lb. load capacity is optimum for most typical factory loads . Trolley wheels ride within the bridge beams, prohibiting derailment . Heavy duty welded mast construction to provide maximum strength & minimum deflection . 360° continuous mast rotation . 4 Bar Insulated Conductor System provides continuous trouble free power supply . User friendly pushbutton operator controls including key locked on/off . Variable speed solid state controls provide smooth precise positioning . Safety features include 2 hoist brakes, hoist free fall catching mechanism, hoist overweight limit and operator's foot controlled "dead-man" safety switch . CMAA, NEC & OSHA Compliant