The HD1 series variable piston pumps for closed loop circuits are
axial pistons pumps with swash plate design and through drive
shaft on option. These pumps have been specifically designed
for use in closed circuit hydrostatic transmissions.
is proportional to the rotation speed and the swash plate angle.
The delivery increases when swash plate’s angle of inclination
increases from 0 to maximum position. Inverting the swash plate’s
angle, the flow direction is inverted. The technical choices allow
the new unit to operate at pressures up to of 400 bar [5800 psi].