SIEMENS
FLENDER Standard Couplings
Torsionally Rigid All-Steel Couplings — ARPEX ARF-6 Series
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Siemens MD 10.1 · 2015
General information
6
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Overview
Coupling can be designed for use in potentially explosive
atmospheres in accordance with the current ATEX Directive.
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Benefits
ARPEX couplings of the ARF-6 series are extremely short and so
suitable for drives with short shaft distances. They also serve as
self-aligning couplings for axial, angular and radial misalign-
ment. The hubs are available both as pure clamping hubs for
smooth shafts and with parallel keyway for shafts with parallel
key. The variant with slit clamping hubs enables the delivery of
fully preassembled couplings. This means that the entire cou-
pling can be dismounted and fitted without moving the con-
nected units.
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Application
ARPEX couplings of the ARF-6 series are designed for minimum
fitting spaces without having to sacrifice the advantages of the
two-joint coupling. It is thus possible to compensate for both ax-
ial and angular as well as radial misalignment. By using half-
shell clamping hubs, the coupling can be radially freely dis-
mounted. Power is transmitted via hexagon socket head cap
screws and close-fitting bolts with nuts and ring plate packs in
hexagonal design. Torques of between 120 and 6100 Nm can
be transmitted at a permitted angular misalignment of 0.7°.
Main areas of application for the ARF-6 series:
•
Film stretching machines
•
Machines in the cellulose industry
•
Machines in confined fitting situations
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Design
The two plate packs form a unit with the adapter disk and are
screwed together with close-fitting bolts and nuts at three points.
The alternate connection of this intermediate unit with the
flanges of the split coupling hubs is achieved by means of short
hexagon socket head cap screws at further three points. The
hubs are designed as axially slit clamping hubs with a half-shell.
For larger bores these can be manufactured as jumbo hubs.
Optionally, the hubs are also available without parallel keyway.
Design of the ARPEX coupling, ARF series
Split hub
Plate pack unit
G_MD10_EN_00166a
Hexagon socket
head cap screw
Hexagon socket
head cap screw
Hexagon socket head cap screw
© Siemens AG 2015