SLF 2250/4000
Hydromatic Stinger
Page - 19 -
© 2014
Technical Description
Drive and gearbox
The pump is either driven by the vehicles power take off or by a
separate pump engine. If necessary, a pump gearbox delivers the
required capacity by a set ratio in relation to the engine speed and
output capacity. If necessary, the pump gearbox is equipped with
a separate cooler whereby discharged water cools down the
gearbox oil.
Water pump
The Rosenbauer pump N 100 is a single-stage high volume pump
with spiral casing and diffusor.
Because of the low nominal pump speed, the pump is best suited for
direct connection (without a pump gearbox) to a low rpm engine,
therefore a dramatic reduction of noise and harmful emission is
achieved.
The hydraulic dimensioning and the high efficiency makes a very
flat pump-curve with a differantial pressure between rated- and
close off pressure of only 2 bar at constant output. Based on the T-
type suction cover, the pump has very compact dimensions and can
be integrated into pipework very easily. The stainless steel pump
shaft is supported on the suction side by a cylinder roller bearing
and on the pressure side by a taper and a ball bearing.
A maintenance free axial face seal seals the pump on the pressure
side and on suction side two shaft seals are installed.
The pump shaft is directed through the suction cover and ends in
a belt drive to drive auxiliary units.
The centrifugal water pump with diffuser and impeller are made of
corrosion resistant light alloy or bronze.
pump shaft
pump casing
impeller
suction cover
drive flange
brake for propeller shaft
pump gearbox
