FLENDER Standard Couplings Flexible Couplings — N-BIPEX Series © Siemens AG 2015 General ■ 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. ■ 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.
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. 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. ■ Application 9 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. 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 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 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 9/2 Siemens MD 10.1 · 2015