TABLE 2-4 POWER REQUIRED CONDITIONS

HYDRAULIC MOTOR - TM-55-1930-209-14P-6_114

TM-55-1930-209-14P-6 Water Purification Barges (NSN 1930-01-234-2165) Chlorination System Manual
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DECKMASTER TABLE 2-4 POWER REQUIRED CONDITIONS Theoretical Drive Train Analysis Levelwind Traveler Head to Electric Motor 1.0 SIDE LOAD 1,000 lb. 2.0 SPEED Drum Speed = 1.07 rpm Hose Diameter = 6.045 in. OD Traveler Speed = (6.045)(1.07) = 6.47 in/min 3.0 CHAIN DRIVE Drive Sprocket Pitch Dia. = 6.68 in. Efficiency = 0.75 Required Torque = (1000) (6.68/2) = 4,453 in-lb 0.75 Required Speed = 6.47 = 0.31 rpm (constant rate) (6.68) (p) Assume Required Rate to be 3 times the constant rate. Required output speed of gearbox = (3)(0.31) = 0.93 rpm 4.0 GEARBOX Eurodrive FAF70 Reduction Ratio = 69.31:1 Efficiency = 0.90 Required Input Torque (Motor Output) = 4453 = 71.4 in-1 (69.31)(0.90) Required Input Speed (Motor Output) = (0.93)(69.31) = 64.5 rpm 2-10 *

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