Lewmar 2019

POWER VOLTAGE 1 MAX OUTPUT TORQUE NO LOAD SPEED MAX RUDDER TORQUE AVGE CURRENT CONSUMPTION WEIGHT Sprocket Size Type HP Nm ft. lb RPM mkg ft. lb kg lb 5∕8" P 9T Sprocket SN255PSS 1∕4 12 43 32 44 207 1500 4.0A 8.8 19.4 5∕8" P 9T Sprocket SN255PSS 1∕4 24 43 32 44 207 1500 2.5A 8.8 19.4 5∕8" P 9T Sprocket SN355PSS 1∕2 24 47 35 55 332 2400 3.5A 10.0 22.0 5∕8" P 9T Sprocket SN455PSS 1 24 466 344 18 1660 12055 6.0A 30.0 66.1 Sprocket Ratio Turns Lock to Lock Steering system Rotary Sprocket Drives – To suit Constellation™ & Mamba™ Lewmar offer 3 sizes of powerful and compact rotary drive units, which employ conventional chain and sprocket connection to the steering system. The high-efficiency, twin-stage, epicyclic gearbox is grease filled, which allows mounting in any attitude. The wide mounting platform is slotted to aid chain tensioning. Rotary drives are generally used on cable and push-pull steering systems and it is necessary to calculate the correct driven sprocket, which is dependent on the turns (mechanical advantage) of the steering system. Lewmar can supply fully machined sprockets for your steering system in steel or stainless steel upon request, as well as chain and master links. Please refer to the graph to calculate the correct sprocket size. The turns lock to lock is referred to at the position on the steering where the driven sprocket is to be mounted. 1 Voltage refers to clutch 9. Steering 380/381