Multiple power take-off units / splitter gearboxes0 pages

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Multiple power take-o units . . .
The multiple pump drive range of equipment allows a single or a multiple of pumps to be driven from a single prime mover.
Single pump drives allow a pump to be close coupled to a diesel engine that has a ywheel and ywheel housing in accordance with
SAE standards (non standard can also be accommodated).
Supplied in a kit format consisting of a bell housing fully machined to suit the particular pump mounting and a exible coupling to suit
the engine ywheel and particular pump shaft.
Multiple pump drives allow two or more pumps to be driven from a single prime mover.
Available in a number of mounting formats, sizes and increasing and decreasing speed ratios.
All models may be close coupled directly to the prime mover (Model B) or may be tted with an over-centre clutch (except AM 365
and AM 480) for close coupling (model BD) or for independent mounting (model BDS).
The multiple pump drive units are constructed from:» cast iron casings.
» straight tooth gears case hardened and ground, shaved on AM216, AM320, AM220, AM330 series.
» ball bearings.
» case hardened shafts.
» Viton seals on input shafts.
The fundamental elements on the selection of a pump drive are:1) The number and type of pumps. Depending on the overall dimensions of the pumps and associated pipework it is possible to
establish the maximum centre distances required.
2) Maximum torque requirement of each pump output. Verify that the
maximum torque requirement is below the maximum value for
each chosen pump or combination of pumps.
3) Maximum input torque. Verify that the maximum input
torque is below the maximum indicated value for the
particular model. In the case of a pump drive tted with
an over-centre clutch (models BD and BDS) it is important
that the input torque is at least 20% below the maximum
transmittable for that particular clutch.
4) Maximum input speed. Verify
speed is below the maximum
particular model. Check that the
is opposite to that of the prime

that the maximum input
value indicated for that
pump direction of rotation
mover.

5) Service factor. A suitable safety factor should be applied
to ensure the Integrity of the drive.
Full specication catalogue available at

www.jbj.co.uk/splittergearboxes.html

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