5EATON Vickers PVM Industrial & Mobile Variable Displacement Piston Pumps V-PUPI-TM007-E February 2009
Introduction
Eaton Vickers
®
M Series mobile pumps are open
circuit, axial piston designs. A variety of controls
provides the ability to match the pumps to each appli-
cation. Efficiency of the pump controls allows down-
sizing of system cooling needs, allowing a smaller
and less expensive design to be used. Alternatively,
cooling capacity could be kept the same and the flow
capability of the system increased, thus improving
performance and customer satisfaction.
A strong proven rotating group allows the pumps to
handle pressures to 280 bar (4000 psi) continuous and
320 bar (4600 psi) intermittent – with less maintenance
cost. High-load bearings and a stiff drive shaft help
provide a pump life of 5000 hours at rated mobile
conditions, reducing operating costs and extending
operating life.
M Series pumps feature a saddle-type yoke with
steel-backed polymer bearings. The stiff yoke reduc-
es deflection and allows even loading of bearings,
improving life. A single control piston reduces load-
ing on the yoke, resulting in reduced pump size which
allows installation in tighter locations.
M Series pumps operate at a level of quietness that
exceeds the requirements of today’s demanding work
conditions. The pumps feature a unique three-piece
envelope (flange, housing and valve block) specifically
created for low fluid-borne and structure-borne noise
levels. Another pump feature – a bimetal timing plate
– improves pump filling characteristics which, in turn,
reduce fluid-borne noise and extend pump life.
Proximity of the pump to the vehicle operator
demands a low noise level in the cab. M Series pumps
reduce, or in some cases remove, the need for damp-
ing barriers between the noise source and the opera-
tor. This saves money on the installed cost of the
system while improving customer comfort.
An adjustable maximum stop provides a means of
tuning flow to your system, while gauge ports allow
monitoring of inlet and outlet conditions. These stan-
dard features reduce system complexity and cost.
Mounting flanges are offered in SAE and ISO con fig-
urations, and ports are offered in SAE, ISO, and BSPP
in both tube and flange versions. This provides a
wide variety of installation opportunities for global
machine design.
Side- or end-ported models are available to facilitate
plumbing and help fit the pump to your machine
space needs. Multiple drain ports allow many mount-
ing orientations, reducing installed costs.
M Series pumps are capable of operating with many
types of hydraulic fluids used in industrial and mobile
systems. High-water-content and phosphate ester
fluids can be accommodated, in addition to the typical
petroleum based and synthetic fluids.
Typical Applications
• Loader backhoes
• Vibratory cable plows
• Mining machinery
• Dump truck lifts
• Agriculture tractors
• Chemical applicator trucks
• Railroad equipment
• Container handling, all-terrain,
and truck cranes
• Vibratory cable plows
• Mining machinery and tunnel
boring equipment
• Utility boom, off-road dump,
and refuse trucks
• Material handling trucks and
rough terrain fork lifts
• Concrete and asphalt pavers
• Feller/bunchers, forwarders,
and log loaders
• Crawler dozers
• Articulate haulers
• Mini-excavators
Features and Benefits
• Long pump life
• Quiet pump operation
• Inlet and outlet gauge ports
and adjustable maximum
displacement stops –
standards
• Astonishingly low 4%
pressure ripple
• Low installed and
operating costs
• Reduced maintenance
• Flexibility in machine design
• Compact size saves space
• Design promotes leak-free
system