Fluid Power Specifications

Power Transfer Unit Specifications

External Gear PTUs - Select the pump size based on desired flow and speed, then determine required horsepower based on operating presure. Then, refer to the motor selection chart and make selection based on required horsepower, available hydraulic fluid flow rate and desired speed (RPM).

Pump Size Nominal Capacity at Speed (100 SSU) Required Horsepower At Rated Pressure (100 SSU)

1150 RPM 1750 RPM 3450 RPM

1150 RPM 1750 RPM 3450 RPM 100 PSI 500 PSI 100 PSI 500 PSI 100 PSI 500 PSI

SG-0417 0.04 0.06 0.12 1/8 1/6 1/8 1/4 1/4 1/2

SG-0418 0.09 0.14 0.27 1/8 1/4 1/8 1/3 1/4 1/2

SG-0425 0.12 0.18 0.36 1/8 1/4 1/6 1/3 1/3 3/4

SG-0435 0.17 0.27 0.52 1/6 1/4 1/6 1/2 1/2 3/4

SG-0450 0.24 0.36 0.7 1/6 1/3 1/4 1/2 1/2 1

SG-0470 0.34 0.50 1.0 1/4 1/3 1/4 1/2 3/4 1

SG-0518 0.47 0.7 1.4 1/8 1/4 1/8 1/3 1/4 3/4

SG-0525 0.66 1.0 2.0 1/8 1/3 1/8 1/2 1/3 1

SG-0535 0.9 1.4 2.8 1/8 1/3 1/4 3/4 1/2 1-1/2

SG-0550 1.3 2.0 4.0 1/8 1/2 1/4 3/4 1/2 2

SG-0570 1.8 2.8 5.6 1/6 3/4 1/4 1 3/4 3

SG-0510 2.6 4.0 8.0 1/4 1 1/2 1-1/2 1 4

SG-0514 3.7 5.6 11.2 1/4 1-1/2 1/2 2 1-1/2 5

SG-0519 5.0 7.6 15.2 1/2 1-1/2^A 3/4 2^A 1-1/2 5^A

SG-0528 7.3 11.2 22.4 1/2 1^B 1 1-1/2^B 2 4^B

^A - Maximum 400 PSI Differential Pressure

^B - Maximum 200 PSI Differential Pressure

Motor Size Nominal Motor Differential Pressure Required (PSI)

Motor Horsepower

Capacity GPM Speed RPM 1/4 1/3 1/2 3/4 1 1-1/2 2 3 5

FM-0518 1.4 3450 650 825 1250 1850 2400 -- -- -- --

0.7 1750 1050 1450 2100 -- -- -- -- -- --

0.5 1150 1600 2250 -- -- -- -- -- -- --

FM-0525 2.0 3450 450 525 650 850 1050 1450 1850 2800 --

1.0 1750 550 700 975 1400 1800 2650 -- -- --

0.7 1150 750 950 1375 2050 2750 -- -- -- --

FM-0535 2.8 3450 350 400 500 650 800 1100 1400 2000 --

1.4 1750 425 500 700 1000 1300 1900 2500 -- --

0.9 1150 550 700 1000 1475 1950 2850 -- -- --

FM-0550 4.0 3450 300 350 425 525 625 825 1050 1450 2300

2.0 1750 350 425 550 750 950 1325 1725 2600 --

1.3 1150 400 500 725 1050 1375 2000 2700 -- --

FM-0570 5.6 3450 225 250 300 375 450 600 725 1000 1600

2.8 1750 250 300 375 500 650 950 1200 1800 --

1.8 1150 300 375 500 725 950 1375 1800 -- --

FM-0510 8.0 3450 175 200 250 300 350 450 550 750 1150

4.0 1750 200 225 300 375 475 675 875 1275 --

2.6 1150 225 275 350 500 625 975 1250 -- --

FM-0514 11.2 3450 160 175 200 240 275 350 430 590 875

5.6 1750 160 185 225 300 370 510 650 940 --

3.7 1150 175 210 280 400 500 725 950 -- --

Internal Gear PTUs - One hydraulic motor (FM-0741) is used on Series 75 (packed) and 475 (mechanically sealed) power transfer units as standard. Select pump based on desired flow rate and operating pressure. This will determine the required pressure differential and flow rate for the hydraulic motor.

Pump Size Pump Discharge Pressure 1150 RPM 1750 RPM

Nominal Pump Capacity Hydraulic Motor Hydraulic Motor

Differential Pressure Required Nominal Flow Required Nominal Pump Capacity Differential Pressure Required Nominal Flow Required

PSI GPM PSI GPM GPM PSI GPM

G75 and G475 25 5 250 2.8 7 275 4.2

50 325 2.9 350 4.2

75 425 2.9 450 4.2

100 550 3.0 575 4.2

GG75 and GG475 25 7 275 2.8 10 275 4.2

50 375 2.9 375 4.2

75 475 3.0 500 4.2

100 600 3.0 625 4.2

H75 and H475 25 10 300 2.8 15 300 4.2

50 475 3.0 500 4.2

75 700 3.0 700 4.2

100 825 3.0 900 4.3

HJ75 and HJ475 25 13 475 3.0 20 500 4.2

50 700 3.0 725 4.3

75 900 3.0 950 4.3

100 1200 3.1 1225 4.4

HL75 and HL475 25 20 500 3.0 30 550 4.2

50 750 3.0 775 4.3

75 1100 3.0 1150 4.3

100 1350 3.2 1400 4.5

Note: The information above based on 200 SSU hydraulic oil.