Kübler Group
4 Installation
English
Operation Manual R60087.0009 - 03
EN | 21
Screws and screwed connections
Unless otherwise specified, a friction coefficient of 0.14 is re-
quired for all screwed connections. Unless otherwise spe-
cified, a strength class of 8.8 (metric) or grade 5 (imperial) is
required for all screws.
The screws must be secured against loosening as described
in chapter Screw Retention.
4.1.2 Couplings
For the tapered and hollow shaft encoders, the coupling ele-
ments, e.g. a stator coupling or a compensating torque stop
are factory-mounted.
For solid shaft encoders, imperatively use a shaft coupling
that meets the requirements of the application.
The coupling element affects the system accuracy of the
drive unit. It must therefore be made sure that the coupling is
sufficiently rigid, without any slipping.
4.1.3 Assembly Instructions for Solid Shaft
Encoders
a) Check the shafts for offset. The maximum permissible tol-
erances depend on the selected shaft coupling (see Solid
shaft alignment).
b) Place the coupling on the encoder shaft. During assembly,
protect the coupling against too important bending and
damages.
c) Fasten the encoder using the tapped holes provided in the
flange.
d) Align the coupling on the shafts, screw the coupling
without preload.
e) Secure the screws against loosening, see chapter Screw
Retention.
4.1.4 Assembly Instructions for Hollow Shaft
Encoders
a) Slide the encoder on the shaft.
b) Comply with the minimum and maximum insertion depth of
the shaft in the encoder.
c) Comply with the maximum permissible shaft offset.
d) Screw the stator coupling or the torque stop without pre-
load on the drive flange.
e) Tighten the screw on the clamping ring.
f) Secure the screws against loosening, see chapter Screw
Retention.
4.1.5 Cable Routing
NOTICE
Cable Routing
Route the sensor cable free of any tension, so that no addi-
tional force is applied on the measuring system. Consider the
minimum bending radii of the connection cable.
Comply with the instructions in chapter
Information for EMC-Compliant Installation [