Denison Hydraulics PV PVT PV6 PV10 PV15 PV20 PV29 series hydraulic axial piston pumps PV6-2R1E-C00 in stock

 

These pumps have the familiar principles originated for DENISON HYDRAULICS axial piston units. The shaft is splined to the barrel which carries the nine axial pistons. Each piston terminates in a ball on which is swaged a shoe that is free to pivot and rotate. It bears against the cam surface which is angled to the shaft axis. The opposite end of the barrel lightly bears against the port plate with its arcuate openings. These communicate to the ports A & B of the piston unit. The barrel and piston shoes are free to move axially to compensate for wear, for thickness variations of the fluid film and for dimensional changes caused by temperature and pressure. The piston shoes are held against the cam surface by the hold-down plate. It rotates at shaft speed and is permitted to adjust to the cam angle by the hold-down ball which loads it. The hanger cam axis, the shaft, and the plane of the piston ball centers all coincide with the center of moments of the unit to give a fully balanced design. This reduces control forces and wear to a mimimum. The angle of the cam surface determines the displacement as well as the direction of fluid flow for a given rotation. The cam surface is supported on a movable hanger. Various controls adjust and limit the hanger angle. These pumps are designed to operate in any position. The mounting hub and two bolt mounting flange are in full conformance with SAE standards, except as noted on installation drawings. The pump shaft must be in alignment with the shaft of the source driver and should be checked with a dial indicator. The mating pilot bore and coupling must be concentric. This concentricity is particularly important if the shaft is rigidly connected to the driven load without a flexible coupling.