DECKMASTER
TABLE 2-5
POWER AVAILABLE CONDITIONS
Theoretical Drive Train Analysis
Electric Motor to Levelwind Traveler Head
1.0
ELECTRIC MOTOR
30 HP (total)
1750 rpm
2.0
HYDRAULIC PUMP
Commercial Shearing P15H301GEAB5-17
Rated Pressure = 2,000 psi
Flow (@ 500 psi) = 5.06 gal/min = 1169 in3/min
Efficiencies: Volumetric
= 0.85
Overall
= 0.70
System Pressure set to 300 psi.
Power Consumed = ( 500) (5.06) = 1.27 HP
(1714) (0.70)
3.0
HYDRAULIC MOTOR
TRW Ross MAF-06-0-06-A1
Displacement = 3.0 in3/rev
Torque (theoretical) = 0.47 in-lb/psi
Efficiencies: Volumetric
= 0.93
Torque
= 0.81
Overall
= 0.75
Assume 100 psi system pressure drop.
Output Torque = (300-100)(0.47)(0.81) = 76.1 in-lb
Output Speed = (1169)(0.93)/3.0 = 362.3 rpm
2-12 *
