American 550
Double Drum Winch
The American 550 3 Drum Mooring Winch detailed here is powered by a 360 hp Cummins 855 engine, coupled with a Heavy Duty TC570 torque converter and an Allison CRT5631-7 transmission. It features a flange diameter of 57 inches, a drum diameter of 25 inches, and a length of 69 inches. The winch is designed to use a 1.75-inch wire rope with a 1.03 oversize factor and can accommodate 66.693 inches of wrapped drum length. The hoist drive train includes a 28:1 chain pinion ratio, a 236 chain wheel, an 18 inter pinion, and a 121 drum gear, resulting in an overall transmission ratio of 85.565. This setup enables a maximum efficiency of 183.89 feet per minute at 48.52 kips in line pull across nine layers.
**Please note that these specifications are for the triple drum version; a double drum version is also available, which may have slight differences in performance metrics.**