Three new N-Eupex couplings and optimised flexible components

Flender is increasing the portfolio of its versatile coupling collection N-Eupex by introducing three new varieties. The new merchandise enable users additional flexibility in their systems without losing the compact design and excessive load capability of a pin coupling.
The new N-Eupex ERN is provided with a torque limiter, which supplies much more

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

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

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

damage, thus significantly growing system availability.
With the N-Eupex B plus clamping element, Flender introduces a second new

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

plain, cylindrical machine shaft end is related to the coupling hub by way of a clamping

connection and not utilizing a feather key and repair capacity is increased. For example,
meeting or replacement of worn elastomers could be carried out far more easily.
No connecting machine components have to be moved, the time required is halved

and so is the downtime of the machine.
With the N-Eupex DKS, a brand 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 expansion pieces for normed shaft

distances, the DKS is the shortest potential double-cardanic answer for the market.
The shortened overall size permits cost-optimized use with a small shaft distance

dimension without shedding 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 made of 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, the utilization of TPU

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

average. For ไดอะแฟรม ซีล and above, the acquainted NBR elastomer is combined with

cloth inserts and the torque capability is once more raised.
“With a view to the long tradition of cam couplings, our improvement engineers are

systematically working on increasing the variety of mixtures even additional. The

2022 enhancements give our customers a extensive range of sustainable options for

optimizing their machines and systems even more and lowering upkeep,”

explains André Artmann, Head of Coupling Sales.
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