Reich Kupplungen Arcusaflex WN Series Manual

Maschinenfabrik Dipl.-Ing. Herwarth Reich GmbH
Vierhausstr. 53 D-44807 Bochum P.O.Box 10 20 66 D-44720 Bochum
Tel.: +49 / (0)234 / 959 16-0 Fax: +49 / (0)234 / 959 16 16
Internet: http://www.reich-kupplungen.de Email: [email protected]
BA AC10 Edition: 06/07 page 1 of 3
Mounting and maintenance instruction for
ARCUSAFLEX couplings
with splined clamping bush
General
The ARCUSAFLEX coupling is a highly flexible flange coupling with axial plug-in facility by rubber teeth.
To reach an optimum adaption to the conditions of application there are three different kinds of vul-
canisates available, a natural/synthetic caoutchouc mixture as standard version up to 80°C (designation
WN, NN SN, UN), a more heat resistant mixture up to 100°C (designation WT, NT, ST) and for high
temperatures up to 130°C ambient temperature a silicon caoutchouc (designation WX). Depending on
the used elastomer it has to be insured, e.g. by adequate ventilation, that higher ambient temperatures
around the coupling are avoided.
The highly flexible ARCUSAFLEX coupling is maintenance free. However, in the context of repairing or
maintenance on other application parts like e.g. the engine or the gearbox, the coupling has to be in-
spected by visual control for damages or unusual wear.
All couplings are balanced ex work with grade G=16 for n=1500 rpm according to ISO 1940.
Mounting
1. Prior to mounting clean all coupling parts. All connection surfaces with fitting dimensions are pre-
served with Tectyl ex work. Before installation of the coupling this surfaces, cone and toothing of the
hub and the clamping bush has to be cleaned with a suitable solvent to show bright metal. The sol-
vent for cleaning must not get in contact with the elastomer.
2. Insert clamping bush into hub and screw in bolts loosely.
3. Slide the pre-assembled coupling with clamping bush onto the cleaned splined shaft and put it into
the mounting position (please note arrangement in accordance with drawing Tighten the bolts by
hand.
4. Tighten the bolts of the hub connection to the element with specified tightening torque acc. to draw-
ing or table 3.
5. Tighten the bolts uniformly one by one step-by-step. Three steps are recommended as minimum:
with about 50%, then with about 80%, then with total specified tightening torque (tightening torque
acc. to drawing or table 2).
6. Tighten the bolts (with washers) of the flange connection to the engine flywheel/drive with specified
tightening torque acc. to drawing or table 1.
7. Check all screw connections regarding the tightening torques again. Hub and clamping bush must
have a fixed seating to each other and to the shaft.
8. Plug-in mounting can take place. To impove the mounting (especially at blind plug-in) wet the surface
of the element with soft soap.
Dismounting/Element exchange
1. Displace engine and driven machine until the coupling element is accessible.
2. Loosen the bolts of the element and retain the element, if applicable use retaining threads. If the
elements clamps onto the hub loose the srews of the bush connection.
3. Place the new element onto the hub like it is shown in the installation drawing. Tighten the bolts of
the hub connection to the element with specified tightening torque acc. to drawing or table 3.

Maschinenfabrik Dipl.-Ing. Herwarth Reich GmbH
Vierhausstr. 53 D-44807 Bochum P.O.Box 10 20 66 D-44720 Bochum
Tel.: +49 / (0)234 / 959 16-0 Fax: +49 / (0)234 / 959 16 16
Internet: http://www.reich-kupplungen.de Email: [email protected]
BA AC10 Edition: 06/07 page 2 of 3
4. If necessary tighten the bolts uniformly one by one step-by-step. Three
steps are recommended as minimum: with about 50%, then with about
80%, then with total specified tightening torque (tightening torque acc. to drawing or table 2).
5. Check all screw connections regarding the tightening torques again. Hub and clamping bush must
have a fixed seating to each other and to the shaft.
6. Plug-in mounting can take place.
Tightening torques
All bolts and screws must be tightened to the specified torques during assembly in order to ensure a
reliable torque transmission. Prior to putting the machinery into operation, all bolts and screws of the
coupling must be checked for proper fit. The following tables show guide values for standard bolt con-
nections, the specifications shown on the relevant drawing are binding. All data are valid for bolts and
screws in the condition of supply, the values have to be reduced by 20% for greased threads. For any
questions or problems please contact our Technical Office.
Table 1
Tightening torques for the bolt flange connection to the engine flywheel (grade 8.8)
SAE flywheel flange 6 ½ 7 ½ 8 10 11 ½ 14 16 18 21 24
Metric bolts M8 M10 M12 M16 M20
Tightening torque
MA1 [Nm] 25 50 85 210 420
Imperial size bolts 5/16 - 18 3/8- 16 1/2– 13 5/8– 11 3/4-10
Tightening torque
MA1 [Nm] 24 42 102 203 340
Note: The aluminum flanges of the coupling sizes AC 2,3 – AC 10D shall be mounted only with wash-
ers. We recommend to use most large washers, but minimum dimensions acc. to DIN 433. Bolts of
grade 10.9 with suitable washer and the corresponding tightening torque can be used if needed after
reconsulting.
Table 2
Tightening torques for the bolted
clamping bush connection to the hub
(grade 10.9)
Splining
Nominal diameter [mm] 35 – 45 50 – 80 100
Bolt size (metric) M8 M10 M16
Tightening torque
MA2 [Nm] 35 69 210
MA1
MA3
A2
M
washer

Maschinenfabrik Dipl.-Ing. Herwarth Reich GmbH
Vierhausstr. 53 D-44807 Bochum P.O.Box 10 20 66 D-44720 Bochum
Tel.: +49 / (0)234 / 959 16-0 Fax: +49 / (0)234 / 959 16 16
Internet: http://www.reich-kupplungen.de Email: [email protected]
BA AC10 Edition: 06/07 page 3 of 3
Table 3
Tightening torques for the bolted hub connection to the elastomer element
(grade 8.8)
Kupplungsgröße AC 2,3
AC 2,6
AC 3
AC 4/4.1
AC 4,9
AC 5/5.1 AC 6/6.1
AC 6,5
AC 7
AC 8 / AC 8D
AC 9 / AC 9D
AC 10 / AC 10D
AC 11 / AC 11D
AC 12 AC 12D
Schraubengröße M8 M12 M16 M16 M16 M20 M20 M24 M24
(10.9)
Anziehdrehmoment MA3
[Nm] 25 85 210 210 210 420 420 710 1000
Permissible shaft displacement
The permissibility of major shaft displacements depends on a number of factors such as coupling size,
shore hardness of the rubber element, operating speed and torque load of the coupling. The following
reference values refer to an operating speed of ≈1500 rpm.
Precise alignment of the shaft orientation prevents premature wear of the rubber element.
α
ΔKr
Angular displacement Radial displacement
ΔKa
+Ka
-Ka
Axial displacement
ARCUSAFLEX-Kupplungsgröße 2,3 2,6 3
4
4.1 4,9 5 5.1 6 6.1 6,5 7 8
8D 9 9D 10 10D 11 11D 12
12D
Max. zulässiger Radialversatz ΔKr [mm] 1,2 1,2 1,2 1,2 1,2 1,2 1,3 1,3 1,3 1,4 1,5 1,5 1,5 1,5
Max. zulässiger Winkelversatz αin Grad 0,5° 0,5° 0,5° 0,5° 0,5° 0,5° 0,4° 0,4° 0,4° 0,4° 0,4° 0,3° 0,3° 0,3°
Max. zulässiger Axialversatz ΔKa [mm] *) ±3 ±4 ±7 ±6 ±7 ±5 ±7 ±4 ±10 ±7 ±4 ±3 ±4 ±3
Larger displacements of short duration, as they may occur when starting and stopping the diesel engine,
are permissible.
Safety precautions
It is the customer´s and user´s responsibility to provide proper guards over rotating machinery and to
observe the national and international safety rules and laws.
Check all bolted connections for proper fit preferably after the test run.