Gaso 1847 A – 2.5″ – 4.5″ diameter X 6″ Stroke, 990psi, 160 gpm

English Units 20 RPM 40 RPM 60 RPM 80 RPM 100 RPM
Piston Dia. In. Piston Area Sq. In. BPD per RPM GPM per RPM Max. Press. PSI BPD GPM BPD GPM BPD GPM BPD GPM BPD GPM
2.500 4.9087 15.7680 0.4599 990 316 9.2 631 18.4 947 27.6 1262 36.8 1577 46.0
3.000 7.0686 23.4480 0.6839 686 469 13.7 938 27.4 1407 41.0 1876 54.7 2345 68.4
3.500 9.6211 32.3520 0.9436 504 648 18.9 1295 37.7 1942 56.6 2589 75.5 3236 94.4
4.000 12.5664 42.9120 1.2516 386 859 25.0 1717 50.1 2575 75.1 3433 100.1 4292 125.2
4.500 15.9043 54.8640 1.6002 305 1098 32.0 2195 64.0 3292 96.0 4390 128.0 5487 160.0
Brake Horsepower required 7 13 20 27 33


Metric Units 20 RPM 40 RPM 60 RPM 80 RPM 100 RPM
Piston Dia. mm Piston Area cm2 M3/Hr per RPM L/Sec. per RPM Max. Press. kPa M3/Hr L/Sec. M3/Hr L/Sec. M3/Hr L/Sec. M3/Hr L/Sec. M3/Hr L/Sec.
64 31.669 0.1044 0.0290 6826 2.1 0.6 4.2 1.2 6.3 1.7 8.4 2.3 10.4 2.9
76 45.604 0.1553 0.0431 4731 3.1 0.9 6.2 1.7 9.3 2.6 12.4 3.5 15.5 4.3
89 62.072 0.2143 0.0595 3476 4.3 1.2 8.6 2.4 12.9 3.6 17.1 4.8 21.4 6.0
102 81.073 0.2842 0.0790 2661 5.7 1.6 11.4 3.2 17.1 4.7 22.7 6.3 28.4 7.9
114 102.608 0.3634 0.1010 2103 7.3 2.0 14.5 4.0 21.8 6.1 29.1 8.1 36.3 10.1
Kilowatts Required 5 10 15 20 25

For operation below 70 RPM, an auxiliary lubrication system is required.

RPM shown is Crankshaft speed. For Pinion Shaft speed, multiply RPM by Gear Ratio. Volumetric Rate is based on 100% Volumetric Efficiency. Brake Horsepower/Kilowatts Required is based on 85% Mechanical Efficiency.