70523 70553

Eaton 70523 and 70553 Pump Specifications

The Eaton 70523 and 70553 are medium-duty variable displacement axial piston pumps designed for hydraulic systems in mobile equipment, construction machinery, agricultural machines and industrial equipment.

They provide pressure or pressure-flow compensation, which allows for system optimization by reducing energy losses and heating. The pumps are manufactured with a compact, lightweight and durable aluminum housing, with numerous shaft and mounting flange options. Model 70523 is a basic single pump, while 70553 is equipped with an auxiliary flange for mounting additional units. Both models have similar technical parameters, but differ in rear plate configuration and expansion capabilities.

General Technical Specifications

• Pump type: Axial piston with pressure or pressure-flow compensation
• Maximum displacement: 0–69 cm³/rev (0–4.21 in³/rev)
• Flow at rated speed and pressure: 159 l/min (42 gal/min) at 2500 rpm and 210 bar (3000 PSI)
• Maximum rated speed: 2500 rpm
• Continuous rated pressure: 210 bar (3000 PSI)
• Maximum intermittent pressure: 310 bar (4500 PSI)
• Permissible continuous case pressure: 2 bar (25 PSI)
• High pressure setting at zero flow: Standard 210 bar (3000 PSI), adjustable to 31 bar (450 PSI) max. or from 35 bar (500 PSI) min.
• Low pressure setting at zero flow: Standard 14 bar (200 PSI)
• Compensator response time at rated pressure and speed: 35 ms
• Compensator recovery time: 125 ms
• Maximum continuous inlet vacuum: 0.94 bar absolute (2 in Hg)
• Maximum continuous inlet temperature: 107 °C (225 °F)
• Minimum operating temperature: -29 °C (-20 °F)
• Weight of single pump: 35.4 kg (78 lbs)
• Efficiency: Volumetric — 85–100% at 70–210 bar (1000–3000 PSI); overall — 75–90% at same parameters
• Input power: Up to 60 kW (80 hp) at 210 bar (3000 PSI)
• Standby mode at zero flow: 4–10 kW (3–12 hp) at 14–210 bar (200–3000 PSI)

These Eaton pumps are known for their reliability, low energy consumption in standby mode and rapid adaptation to loads.

Hydraulic Pump Cross Numbers

70523, 70553, 70502-200, 70502-202, 70552-200, 70552-203, 70552-209, 70502-606, 70442-929

Installed in Models

Volvo dumper 25 FG75/85/95, Dreiser grader 870

Order Eaton 70523 70553 Hydraulic Pumps

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