Eaton Vickers 70122 70422 70523 Piston Pump | 70122-RBB 70122-RAM

LIC Hydraulic’s Eaton 70122, 70422, and 70523 Series axial piston pumps are reliable, open-loop variable displacement units designed for light-to-medium duty applications. Specifically engineered for models like 70122-RBB and 70122-RAM, these pumps feature a high-strength aluminum housing that offers an exceptional power-to-weight ratio. We guarantee 100% Drop-in Interchangeability with original Eaton Vickers specifications. Every unit undergoes 100% factory load and efficiency testing, ensuring seamless performance in agricultural steering, turf equipment, and industrial auxiliary circuits.

Technical Specifications (Bulleted List)

• Series Model: 70122 / 70422 / 70523 (Open-Loop Piston Pump)

• Displacement Range: $12.3\text{ cc/rev}$ to $21.0\text{ cc/rev}$

• Rated Pressure: $210\text{ bar}$ ($3000\text{ PSI}$)

• Peak Pressure: $240\text{ bar}$ ($3500\text{ PSI}$)

• Max Rotation Speed: $3600\text{ RPM}$

• Control Options: Pressure Compensator, Flow Control, or Manual Lever.

• Typical Codes:

  • 70122-RBB: Clockwise rotation with specific shaft and porting.

  • 70122-RAM: Clockwise rotation with alternative compensator settings.

• Body Material: High-grade die-cast aluminum for superior heat dissipation.

Key Technical Advantages

• Precision Axial Plunger Design: The 9-piston rotating group minimizes flow ripple and operational noise, ensuring smooth actuator movement even at high pressures.

• Fast-Acting Pressure Compensator: The sensitive control logic allows the pump to destroke rapidly once the setpoint is reached, significantly reducing energy waste and preventing oil overheating.

• Lightweight & Compact Footprint: The aluminum construction makes this series significantly lighter than cast-iron alternatives, ideal for mounting on mobile equipment where weight and space are critical.

• Heavy-Duty Drive Bearings: Engineered with reinforced bearing sets to handle high input speeds and potential radial loads, extending the service life under continuous-duty cycles.

Application Areas

• Agricultural Machinery: Steering systems for harvesters and auxiliary drives for planters.

• Turf & Garden: Primary hydraulic source for Zero-Turn (ZTR) mowers and compact tractors.

• Mobile Solutions: Forklift steering pumps and auxiliary systems for compact street sweepers.

Expert Maintenance Tips

• System Priming: Never start the pump dry. Always fill the pump housing with clean hydraulic fluid through the case drain port before initial operation to protect the piston slippers.

• Suction Integrity: Ensure the suction line is airtight. Air ingestion is particularly damaging to aluminum-body pumps and will lead to rapid cavitation and loss of pressure.

• Fluid Cleanliness: Maintain system filtration at ISO 4406 18/16/13 or better. Protecting the precision-ground internal surfaces is key to maintaining high volumetric efficiency over time.

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