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6 EATON 420 Mobile Piston Pump Technical Manual E-PUPI-TM002-E4 November 2014
Specifications and
Performance
Inlet Pressure, Case Pressure, and Operating Temperature Requirements
Inlet Pressure Case Pressure Operating Temperature
Maximum Maximum Minimum Maximum
Rated Minimum Maximum Continuous Intermittent Peak Rated Temperature Intermittent
bar abs (psig) bar abs (in. Hg) bar abs (psig) bar abs (psig) bar abs (psig) bar abs (psig) °C (°F) °C (°F) °C (°F)
1.0 (0) 0.85 (5) 4.4 (50) 1.3 (5) 3.1 (30) 6.2 (75) 93 (200) -37 (-35) 104 (220)
Hydraulic Fluids
Recommended Minimum Viscosity @ Max.
Operating Maximum Maximum Viscosity Intermittent Temperature of Minimum
Viscosity Range Continuous at Startup 93°C (200°F) Intermittent
Fluid cSt (SUS) cSt (SUS) cSt (SUS) cSt (SUS) cSt (SUS)
Use antiwear hydraulic oil, 16 to 40 (80 to 188) 430 (1192) 2100 (9720) 10 (59) 6 (46)
or automotive type crankcase
oil (designations SC, SD, SE
or SF) per SAE J183 FEB80
For more information, see Eaton publication 579. For operation on other alternative or environmentally friendly uids, please contact your Eaton Representative.
General Performance Specications
Units ADU041 ADU049 ADU062 ADU080
Displacement cc/r (in
3
/r) 41.0 (2.50) 49.2 (3.00) 62.3 (3.80) 80.0 (4.88)
Weight Single Seal
1
kg (lbm) 22.9 (50.4) 22.9 (50.4) 23.8 (52.4) 24.2 (53.4)
Dual Seal
1
24.1 (53.1) 24.1 (53.1) 25.0 (55.1) 25.4 (56.1)
Pressure Continuous bar (psi) 280 (4060) 280 (4060) 280 (4060) 210 (3050)
Intermittent
2
320 (4600) 320 (4600) 320 (4600) 230 (3335)
Peak
3
350 (5000) 350 (5000) 350 (5000) 250 (3625)
Speed
4
At 1 bar abs (0 psig) rpm 2650 2650 2600 2200
At .85 bar abs (5 in.Hg) 2450 2450 2400 1800
At 2 bar abs (15 psig) 2950 2950 2800 N/A
Max (standby) 3600 3600 3600 3600
Min 600 600 600 600
Power Max (theoretical) kW (hp) 50.7 (68.0) 60.8 (81.5) 75.6 (101.3) 61.7 (82.7)
Standby .98 (1.3) .98 (1.3) 1.1 (1.5) 1.4 (1.9)
Torque Max (theoretical) Nm (lb-ft) 183 (135) 219 (162) 278 (205) 268 (198)
Bearing Life
5
At 140 bar (2030 psi) B10 Hours 103,650 55,580 33,500 17,150
At 210 bar (3045 psi) 26,830 14,380 8,670 4,440
At 280 bar (4060 psi) 10,280 5,510 3,320 N/A
Mass Moment of Inertia Nm-sec
2
.0033 .0033 .0046 .0058
(lb-in-sec
2
) (.0288) (.0288) (.0403) (.0517)
1 Standard SAE B non-through drive.
2 Less than 10% of duty cycle.
3 Momentary system pressure spikes only.
4 Ratings based on Flange ports. Note: Tube ports are not available on the 62cc and 80cc displacements.
5 Bearing life ratings at rated speed - 1 bar abs (0 psig) inlet.
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