SIEMENS
FLENDER Standard Couplings
Flexible Couplings — N-BIPEX Series
General
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Siemens MD 10.1 · 2015
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Overview
N-BIPEX couplings are torsionally flexible and are outstanding
for their particularly compact design and low weight.
N-BIPEX couplings are used in many areas of mechanical engi-
neering.
Their main area of use is in electric motor drives which are well
aligned and have uniform torque loads, such as in hydraulic ap-
plications and in combinations with geared motors.
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Benefits
N-BIPEX couplings are suitable for horizontal, vertical and freely
selectable mounting positions. They are able to absorb axial, ra-
dial and angular misalignment.
N-BIPEX couplings consist of two identical hub parts which can
be arranged as required on the shaft extensions to be con-
nected. N-BIPEX couplings transmit the torque positively and
are thus fail-safe. The curved design of the cast cams ensures
that the N-BIPEX couplings have a perfect pressure distribution
and this increases the elastomer lifetime.
The flexible cam rings responsible for torque transmission and
misalignment compensation are available in different Shore
hardnesses. As a result of the good damping capability and by
selecting the suitable stiffness, torque shock loads can thus be
absorbed and the torsional vibration behavior of the drive can be
positively influenced. Different cam ring versions and ready-to-
install hub parts are available from stock.
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Application
The N-BIPEX coupling is available as a catalog standard in
10 sizes with rated torques of between 12 Nm and 4650 Nm and
is made of high-grade spheroidal graphite cast iron.
The extremely high-performance cam ring materials are avail-
able from stock in three different Shore hardnesses with the fol-
lowing colors:
•
92 ShoreA – red
•
95 ShoreA – green
•
64 ShoreD – blue
An additional size marking has been provided on the outer sur-
face of the cam ring to be able to determine the size of the
N-BIPEX even when it is in the assembled state without having
to use any additional aids.
The coupling is suitable for use at ambient temperatures be-
tween -50 °C and +100 °C without any restrictions on the rated
torque as a result of temperature factors.
Coupling suitable for use in potentially explosive
atmospheres.
Complies with the current ATEX Directive for:
II 2 G IIB T4/T5/T6
-50 °C
≤
T
a
≤
+100 °C/+70 °C/+55 °C
II 2D T 120 °C
-50 °C
≤
T
a
≤
+90 °C
I M2
© Siemens AG 2015