Lewmar Rotary Autopilot Sprocket Drive

Lewmar offers powerful and compact rotary drive units, which employ conventional chain and sprocket connection tothe 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.

1/4 HP/12V Specifications:

• Power: 1/4 HP
• Voltage: 12V
• Max Output Torque: 43 NM (32' lbs)
• No Load Speed: 44 RPM
• Max Rudder Torque: 207 MKG (1500' lbs)
• Average Current Consumption: 4A
• Weight 8.8 kg (19.4 lbs)

1/4 HP/24V Specifications:

• Power: 1/4 HP
• Voltage: 24V
• Max Output Torque: 43 NM (32' lbs)
• No Load Speed: 44 RPM
• Max Rudder Torque: 207 MKG (1500' lbs)
• Average Current Consumption: 4A
• Weight 8.8 kg (19.4 lbs)

1/2 HP/24V Specifications:

• Power: 1/4 HP
• Voltage: 24V
• Max Output Torque: 47 NM (35' lbs)
• No Load Speed: 55 RPM
• Max Rudder Torque: 332 MKG (2400' lbs)
• Average Current Consumption: 3.5A
• Weight 10 kg (22 lbs)