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EATON 70523 Series Open Circuit Piston Pumps


Eaton 70523 Series open circuit piston pumps are ideal for concrete equipment, refuse trucks, backhoe loaders, wheel loaders, vacuum trucks, drill rigs and telehandlers. These piston pumps operate motors and hydraulic cylinders on agricultural machinery and mobile construction for quick recover...y & response times in the open-circuit piston. Read more

Filter
EATON 70523-LAAA
EATON 70523-LBFB
EATON 70523-RBEC
StyleModelPrice (ex. VAT)
A
70523-LAA		€6,780.07
A
70523-LAB		€6,987.59
B
70523-LBF		€6,987.59
A
70523-LBG		€6,780.07
B
70523-RAB		€6,987.59
C
70523-RBE		€6,780.07

Working Mechanism

  • The pump's compensator spool mobilises opposite to the spring force when the outlet pressure reaches the compensator setting allowing the pump outlet pressure to reach the internal servo piston.
  • The servo piston surface area and pressure result in a force to push the swash plate, decreasing piston travel in the rotating group and leading to lower pump outlet flow rates.
  • The spring force allows the compensator spool back in the other direction when the pressure in the system falls below the compensator setting.
  • A case drain line then returns oil from the servo piston chamber to the tank via the oil in the piston chamber.
  • The bias spring pushes the swash plate back on stroke at full angle and flow by decreasing the servo piston force.
  • The pump then maintains the compensator pressure by providing whatever flow is necessary to maintain that pressure.

Features

  • They have a compact aluminium housing for resisting corrosion on exposed surfaces.
  • These pumps comply with ISO Cleanliness Code 18/13 to prevent contamination.
  • They are equipped with a pressure compensator spool for maintaining a constant flow rate.
  • These piston pumps come with 2 and / or 4 Bolt SAE C mount flanges to resist high pressure.
  • They are integrated with a cam plate to distribute oil flow in unreachable areas.
  • These pumps have backplates with rear & side porting and deliver speeds up to 2500 RPM.

Standards and Approvals

  • SAE

Frequently Asked Questions

What are the continuous rated and maximum intermittent pressure ratings of Eaton 70523 Series open circuit piston pumps?

Eaton 70523 Series open circuit piston pumps have continuous rated pressure of 210 bar and maximum intermittent pressure of 310 bar.

What are the installation requirements for these Eaton 70523 Series open-circuit piston pumps?

  • Install the piston pumps so that the case drain assures an oil level at or above the unit centre line.
  • The oil level should be at the centre line or above before starting the piston pump.
  • Ensure that the case drain line is of sufficient size for limiting the case pressure to 2 bar.
  • The combined torque needed to turn two or more pumps should not go beyond the torque rating of the shaft in these piston pumps.

What is the operating temperature range of Eaton 70523 Series open circuit piston pumps?

-29 to 107 degrees C.

What does the ISO cleanliness code 18/13 mean?

The ISO cleanliness code 18/13 allows 2500 particles per millilitre greater than 5 microns and a maximum of 80 particles per millilitre greater than 15 microns to pass through the pump.

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