SIEMENS
FLENDER Standard Couplings
Torsionally rigid all-steel couplings — N-ARPEX ARN-6 series
6/3
Siemens MD 10.1 N · 04/2017
General
6
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Design
NEN
The design of an N-ARPEX type NEN of the ARN-6 series is
shown in the following illustration. The coupling consists of two
hubs, an intermediate spacer and two plate packs that can be
bolted together with close-fitting bolts. The intermediate spacer
is available in fixed lengths from stock. Other spacer lengths are
made to order. The hubs are designed with threaded pull-off
holes.
MCECM
The design of an N-ARPEX type MCECM of the ARN-6 series is
shown in the following illustration. The coupling consists of two
hubs and a preassembled intermediate unit (CEC) in which the
plate packs are bolted to the intermediate spacer and centering
flanges in the factory.
On site, it only remains to bolt the hubs to the centering flanges.
The coupling is available in fixed lengths from stock. Other
spacer lengths are made to order. The hubs are designed with
threaded pull-off holes.
Design of the N-ARPEX coupling, ARN-6 series, type NEN
Variants of the N-ARPEX coupling, ARN-6 series
Design of the N-ARPEX coupling, ARN-6 series, type MCECM
Dimension sheets and 3D models of the standard types and
application-specific coupling types are available in the selection
module X:CAT NG at
/couplings
.
Type
Description
NEN, BEB
Variant with intermediate spacer, various fixed lengths
available from stock
MCECM
Variant with preassembled intermediate unit, recess guide
between hubs and preassembled intermediate unit, vari-
ous fixed lengths available from stock
Intermediate
spacer
Collar nut
Catching ring
Hub
Plate pack
Close-fitting
bolt
G_MD10_EN_00249
Intermediate
spacer
Intermediate flange
Collar nut
Catching ring
Hub
G_MD10_EN_00250
Plate pack
Close-fitting
bolt
© Siemens AG 2017