Vane pumps from jbj Techniques Limited

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Drastically reduce expensive machine down time.
All the components subject to wear within these vane pumps are contained in a cartridge unit that can be easily
removed for inspection and/or replacement without disconnecting the pump from the circuit, drastically reducing
expensive machine down time.
The cartridge contains a rotor, vanes and inserts, a cam ring, two flexible plates and two covers. During operation
the rotor is driven by a splined shaft coupled to the drive unit. As the rotation speed increases, centrifugal forces,
in combination with the pressure generated behind the vanes, push the vanes outwards, where they follow the
profile of the cam with a sufficient contact pressure to ensure adequate hydraulic sealing. The two opposed
pumping chambers formed by the elliptical profile of the cam cancel out radial loads on the shaft bearings,
thereby giving them extremely long lifetimes.
The design characteristics of these vane pumps make them particularly suited to applications in the mobile field.
The special design of the flexible plates enables any thermal expansion in the rotor to be compensated for and to
adequately cope with any sudden change in pressure. Furthermore, the counter-pressure chambers positioned
between the flexible plates and the cartridge covers balance the internal pressure; this ensures that the correct
clearance between the rotor and the flexible plates is always maintained so guaranteeing maximum volumetric
efficiency.
The versatility of these vane pumps enables them to meet the requirements of the most varied industrial
applications. In fact, as well as their proven high reliability and excellent volumetric efficiency in all working
conditions, they operate with particularly low noise levels. This is made possible by the special profile of the cam
ring and the use of a 12 vane rotor that reduces the amplitude of the supply pressure pulses, thereby reducing
induced vibrations.
These vane pumps are extremely compact and are supplied with ISO norm mechanical couplings and SAE norm
hydraulic fittings. This makes them very easy to install and guarantees their interchangeability with other similar
pumps (eg. Vickers, Caterpillar, Denison).
More detailed technical information is available in the catalogues of the standard B & C range of vane pumps
available from jbj Techniques Limited.
Vane pumps provide versatility, power, compactness and low running costs.
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Basic pump parts
1 - Shaft
2 - Shaft Seal
3 - Body
4 - Key
5 - Bearing
6 - Circlip
7 - Shaft Kit
8 - Cartridge
9 - Cover
10 - Screw