Repair Kits ERR100 ERR130 Variable Displacement Hydraulic Pump For
Komatsu Excavator
NEW PRODUCT: ERR100 ERR130 PUMP
Condition: 100% New.
Rebuild parts: Available.
Delivery: 1-3 days
Stock: Yes
A common variable displacement pump used in vehicle technology is
the axial piston pump.
This pump has several pistons in cylinders arranged parallel to
each other and rotating around a central shaft.
A swashplate at one end is connected to the pistons. As the pistons
rotate, the angle of the
plate causes them to move in and out of their cylinders. A rotary
valve at the opposite end
from the swashplate alternately connects each cylinder to the fluid
supply and delivery lines.
By changing the angle of the swashplate, the stroke of the pistons
can be varied continuously.
If the swashplate is perpendicular to the axis of rotation, no
fluid will flow. If it is at a sharp angle,
a large volume of fluid will be pumped.
Some pumps allow the swashplate to be moved in both directions from
the zero position,
pumping fluid in either direction without reversing the rotation of
the pump.
