Oil Pump - Kubota D650-B Handbuch

[AJ Rotor-type
pump
in operation
C047FQ14
2-4 OIL PUMP
The oil pump is of rotor type and works smoothly and noise ­
lessly. An inner and outer rotor turn inside a housing. In
operation, the inner rotor is driven inside the outer rotor. The
inner rotor has one less lobe than the outer rotor, so that
only one lobe is in full engagement with the outor rotor at
anyone time. This allows the other lobes to slide over the
outer lobes, making a seal to prevent back-up of oil.
As the lobes slide up and over the lobes on the outor rotor,
oil is drawn in. As the lobes fall into the ring's cavities, oil is
squeezed out.
(1) Draw in 1
(5) Inlet
(2) Drew in 2
(6) Outlet
(3) Draw in 3
(7) Inner rotor
(4) Squeeze out
(8) Outer rotor
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