Siemens is extending its comprehensive coupling portfolio to include a new elastic claw coupling, the Flender N-Bipex, which will be available in ten sizes made of high-quality nodular cast iron. Optimised cam geometry and newly developed elastomers have meant a major improvement to the service life of the N-Bipex in comparison to standard couplings available in the marketplace. Depending on the size, torque has been increased by between 10% and 20% over previous solutions. The new elastomers are available in three different shore hardnesses, and allow the couplings to be used across a temperature range of -50°C to +100°C without compromising nominal torque. Flender N-Bipex couplings are used predominantly in connection with hydraulic systems and geared motors, meaning that they are found across the whole of the machine-building sector, with applications throughout the chemical, environmental engineering and steel industries.
The casting method used increases the degree of freedom for shaping the cams. This added scope enables the contour to be designed to ensure optimum engagement of the load flank surfaces. The newly developed elastomers used for the Flender N-Bipex are designed for high performance. They are capable of withstanding dynamic loads across a very wide temperature range without restriction. The material used offers excellent compressive strength, wear resistance, dimensional stability and ductility.