Three new N-Eupex couplings and optimised versatile components

Flender is increasing the portfolio of its versatile coupling collection N-Eupex by introducing three new types. The new merchandise enable users extra flexibility in their techniques without dropping the compact design and excessive load capability of a pin coupling.
The new N-Eupex ERN is equipped with a torque limiter, which offers much more

safety in the drivetrain in many applications. The coupling variant permits users to

specify a maximum torque so that crucial torques for the motor and output machine

are not transmitted. Machines and techniques are protected from overload and

damage, thus considerably increasing system availability.
With the N-Eupex B plus clamping component, Flender introduces a second new

coupling that ensures frictionally engaged clamping connections. In this case, the

plain, cylindrical machine shaft finish is related to the coupling hub via a clamping

connection without a feather key and service capability is increased. For diaphragm seal ,
assembly or replacement of worn elastomers can be carried out far more easily.
No connecting machine components should be moved, the time required is halved

and so is the downtime of the machine.
With the N-Eupex DKS, a new double-cardanic coupling is launched as a “short

version” into Flender’s modular system. While the DK type, which was launched in

2020, addresses the pump market with normal enlargement items for normed shaft

distances, the DKS is the shortest attainable double-cardanic solution for the market.
The shortened general size allows cost-optimized use with a small shaft distance

dimension with out losing some nice benefits of a double-cardanic coupling connection.
New elastomers for the pin couplings round off the modular extensions. In addition

to the previously used rubber elements manufactured from NBR, Flender now additionally offers

elastomers made of thermoplastic polyurethane (TPU). Following the torque

increase for all N-Eupex couplings with NBR packings in 2020, using TPU

packings permits the power density to be elevated by another 20 % on

common. For sizes 300 and above, the familiar NBR elastomer is combined with

material inserts and the torque capability is again raised.
“With a view to the lengthy tradition of cam couplings, our development engineers are

systematically working on growing the variety of mixtures even further. The

2022 enhancements give our customers a variety of sustainable choices for

optimizing their machines and methods much more and decreasing maintenance,”

explains André Artmann, Head of Coupling Sales.
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