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EATON 70423 Series Open Circuit Piston Pumps

Eaton 70423 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 ...Read More

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EATON 70423-LBAA
EATON 70423-LBDB
EATON 70423-LBEC
EATON 70423-LBFD
EATON 70423-LBGE
EATON 70423-RBTF
StyleModelPrice (inc. GST)
A
70423-LBA		- SGD 7,282.70
A
70423-LBB		- SGD 7,177.28
B
70423-LBD		- SGD 7,177.28
C
70423-LBE		- SGD 7,447.22
D
70423-LBF		- SGD 7,012.76
E
70423-LBG		- SGD 7,282.70
B
70423-RBM		- SGD 7,282.70
D
70423-RBS		- SGD 7,012.76
F
70423-RBT		- SGD 7,282.70

Working Mechanism

  • When the outlet pressure hits the compensator setting, a compensator spool shifts over against the spring force to allow the pump outlet pressure to reach the internal servo piston.
  • Reduced piston travel in the rotating group and decreased flow rates at the pump output are the results of the surface area and pressure of the servo piston pushing on the swash plate.
  • While the system pressure falls below the compensator setting, the spring force allows the compensator to spool back in the opposite direction.
  • Then, through the oil in the piston chamber, a case drain line returns oil from the servo piston chamber to the tank.
  • By reducing the servo piston force, the bias spring forces the swash plate back onto the stroke at full angle and flow.
  • The pump then provides the necessary flow to maintain the compensator pressure, keeping it at a constant value.

Features

  • They have a compact aluminium housing that resists corrosion on exposed surfaces.
  • These pumps comply with ISO Cleanliness Code 18/13 to prevent contamination.
  • They are equipped with backplates with side & rear porting and have a maximum rated speed of 3000 RPM.
  • They come with a cam plate to distribute oil flow in difficult-to-reach areas.
  • These piston pumps have 2 SAE mounting flanges to resist high pressure.
  • They are equipped with a pressure compensator spool to maintain a constant flow rate.

Standards and Approvals

  • SAE

Frequently Asked Questions

What is the operating temperature of Eaton 70423 Series open circuit piston pumps?

These pumps can be operated at temperatures ranging from -29 to 107 degrees C.

What are the installation requirements for these Eaton 70423 Series open-circuit piston pumps?

  • Install the piston pumps such that the case drain assures an oil level at / 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 are continuous rated and maximum intermittent pressure ratings of these pumps?

Eaton 70423 Series open circuit piston pumps have a continuous rated pressure of 210 bar and maximum intermittent pressure of 265 bar.

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