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r <br /> f 3 f3 <br /> HELICAL DRIVER TORQUE CHART <br /> 2.5K Driver <br /> Dealer: <br /> Ram Jack Systems Distribution,LLC <br /> JACK <br /> 13655 13655 County Road 1570 <br /> Ada,OK 74820 <br /> Torque Equation: <br /> Hydraulic Motor: Pressure*displacerzen <br /> Model: Sauer Danfoss 151-7257 T= Gear Ratio*n * <br /> Displacement(in 3): 19.32 24tt ) <br /> motor gear <br /> where: Pressure= hydraulic pressure(psi) <br /> Gear Drive: Displacement= hydraulic motor displacement(in 2) <br /> Model: Fairfield S07A26604 7l motor = motor efficiency <br /> Ratio: 4.1 //gear = gear drive efficiency <br /> Torque Chart <br /> Pressure(psi) 500 750 1,000 1,250 1,500 1,750 2,000 2,250 2,500 2,750 3,000 <br /> Torque(ft-lbs) 463 695 927 1,158 1,390 1,622 1,853 2,085 2,317 2,548 2,780 <br /> *NOTE: The torque can also be calculated at any hydraulic pressure by multiplying the pressure by the psi'torque,fcrtor for this <br /> helical driver which is 0.926. <br /> ...................... <br /> Ultimate Capacity1a,3 <br /> 2 3/8"dia.shaft(K, =10) 4,633 6,950 9,266 11,583 13,899 16,216 18,532 20,849 23,165 25,482 27,798 <br /> 2 7/8"dia.shaft(Kr =9) 4,170 6,255 8,340 10,424 12,509 14,594 16,679 18,764 20,849 22,934 25,019 <br /> *NOTE: l)Ultimate Capacity(Q„)=Installation Torque(T)x Torque Correlation Factor(K,). <br /> 2)Capacities shown in table assumes the pile is fully braced and has no eccentric loading. <br /> 3)_A safety,%actor of 2 should be applied to the ultimate capacity to obtain the working load capacity. <br />