Design - Danfoss LPV Technical Information

Technical Information
LPV Axial Piston Pumps
General description

Design

6 | © Danfoss | September 2017
LPV is a family of hydrostatic pumps for low to medium power applications with maximum loads of 345
bar [5000 psi]. You can apply these pumps with other products in a system to transfer and control
hydraulic power.
LPV pumps provide an infinitely variable speed range between zero and maximum in both forward and
reverse modes of operation. LPV pumps come in three displacements (25 cm3 [1.53 in
3 3
and 35 cm [2.14 in ]).
LPV pumps are compact, high power density units. All models use the parallel axial piston / slipper
concept in conjunction with a tiltable swashplate to vary the pump's displacement. Reversing the angle
of the swashplate reverses the flow of fluid from the pump, reversing the direction of rotation of the
motor output.
LPV pumps have an internal neutral return mechanism for ease of installation, and are available with
optional loop flushing for circuit flexibility. LPV pumps can receive charge flow from an auxiliary circuit or
from a gear pump mounted on the auxiliary mounting pad. LPV pumps feature an SAE A auxiliary
mounting pad to accept auxiliary hydraulic pumps for use in complementary hydraulic systems.
LPV pumps include a trunnion style direct displacement control.
LPV cross section
Cylinder block
Valve plate
Needle bearing
Cylinder block spring
Trunion
Tapered roller bearing
Piston
Swashplate
Slipper
3 3
], 30 cm [1.83 in
Ball bearing
Input shaft
P106271
520L0954 | BC00000044en-US0102
3
],