420 Mobile Piston Pump Design Code C Powering Business Worldwide

EATON 420 MOBILE PISTON PUMP CATALOG

Content Model codes Control options Pressure & Flow (Load Sense) Compensator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pressure Compensator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Torque Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Remote Pressure Control (RPC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electronic Displacement Control (EDC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 EH Inverse...

Introduction 420 Series Mobile Piston Pump The Eaton® X20 portfolio of open-circuit piston pumps is built to maximize machine performance and productivity. With sophisticated controls that enhance system efficiency and a compact design that delivers incredible power, the X20 portfolio empowers mobile machine operators to do more work in less time using less fuel. Sophisticated controls that improve performance while optimizing efficiency. Excellent pressure responsiveness – The X20 portfolio delivers the fastest response and recovery times in the opencircuit piston segment, helping customers...

420 Mobile Piston Pump EEE Pump series ADU - 420 Series open circuit piston pump 7 Input shaft rotation L - Left hand H 8 Front mount and shaft 01 - 2 Bolt B, 22.2 mm (0.875in . ) Dia . keyed shaft 02 - 2 Bolt B, 25.4 mm (1.00in . ) Dia . keyed shaft 03 - 2 Bolt B, 22.22 mm ( . 875in . ) Dia . tapered keyed shaft 05 - 2 Bolt B, 13 tooth 16/32 spline 08 - 2 Bolt B, 15 tooth 16/32 spline 32 - 2/4 Bolt C, 14 tooth 12/24 spline 33 - 2/4 Bolt C, 31.8 mm (1.25in) Dia . keyed shaft 34 - 2 Bolt B, 15 tooth 16/32 sled runner spline 35 - 2 Bolt B, 14 tooth 12/24 spline 38 - 2/4 Bolt C, 31 75 mm (1 25)...

420 Mobile Piston Pump Auxiliary (rear) mount & output shaft No auxiliary mounting features SAE A 2 Bolt, 11T 16/22 Spline SAE B 2 Bolt, 12T 16/22 Spline SAE B 2 Bolt, 15T 16/22 Spline SAE A 2 Bolt, 9T 16/22 Spline Shaft seal No shaft seal Standard polyacrylate shaft seal Viton shaft seal Double, two-way shaft seal, Viton with VHO filter Nitrile shaft seal Single viton shaft seal in 2/4 Bolt C mount pump housing 22122 Control special features 00 - Control special features 0A - Bleed down orifice 0B - 24V Cold start valve 0D - 12V Cold start valve (used with EH inverse proportional pressure control)...

General performance specifications For more information, see Eaton publication 579. For operation on other alternative or environmentally friendly fluids, please contact your Eaton representative. EATON 420 MOBILE PISTON PUMP CATALOG E-PUPI-TM002-E7 February 2020 www.eaton.com

The pump will provide flow & pressure matching of pump output to system load demand, maximizing efficiency and improving load metering characteristics of any directional control valve installed between the pump and the load . Load sensing ensures that the pump always provides only the amount of flow needed by the load . The pump operating pressure adjusts to the load pressure plus a pressure differential required for the load sense margin . When the system is not demanding flow, the load sense control will operate in low pressure zero flow, energy saving stand-by mode . The differential pressure...

The pump will provide a continuously modulated flow to meet changing load demands at a pre-adjusted compensator pressure . At pressures below the compensator setting, the pump will operate at maximum displacement . See model code position 16,17 for compensator pressure ranges . Warning 1 . When adjusting the pressure compensator, install a 0 to 350 bar (0 to 5000 psi) gage in the outlet gage port and limit the pressure setting to the continuous rated pressure for the pump displacement . It is possible to adjust the pressure compensator beyond the rated pressure of the pump . Doing so, may void...

Control options Torque Control When combined with Pressure Compensator Control and/or Load Sense, it will allow the pump to remain inside the power envelope of the Pressure Flow curve. When the combination of pump flow and outlet pressure moves outside the envelop the pump displacement will automatically be reduced. This maximum setting is easily calculated using the following steps: • • • • To load Gage Outlet Gage Inlet Torque (in-lbs) Load sense Engine RPM Horsepower (KW) x 9550 Engine RPM 41cc 40 Nm (350 in-lbs) 51 Nm (450 in-lbs) 62 Nm (550 in-lbs) 73 Nm (650 in-lbs) 85 Nm (750 in-lbs) 96...

EATON 420 MOBILE PISTON PUMP CATALOG E-PUPI-TM002-E7 February 2020 www.eaton.com

Pump displacement can be controlled infinitely, as per the current signal provided to the solenoid control valve . The integrated pump control makes use of an external current signal to vary the pump displacement . This control has an proportional characteristic i . e . with increasing current signal, the displacement increases proportionately This control is with manual override . Based on fail safe condition there are two types: Min type (EP): Return to min displacement in case of power loss . Max type (EPD): Return to max displacement in case of power loss Warning: • When adjusting the pressure...

The EH Inverse Proportional Pressure control allows for stepless variation of the max pump output pressure, as per the current signal provided to the control valve solenoid . The integrated pump control makes use of an external current signal to vary the pump output pressure This control has an inverse proportional characteristic i . e . with increasing current signal, the max output pressure is proportionately reduced Warning: • When adjusting the pressure limiter, install a 0 to 350 bar (0 to 5000 psi) gage in the outlet gage port and limit the pressure setting to the continuous rated pressure...

Control options Electronic De-stroke (Cold Start) Valve The 620 Electronic Destroke Valve reduces pump start-up torque by directing outlet pressure to the control piston. It is primarily used in cold weather applications and includes a 12 or 24 VDC directional control valve mounted between the pump housing and compensator. Refer model code position 22,23 - control special features for available connector options EATON 420 MOBILE PISTON PUMP CATALOG