FLENDER ELPEX-S, Assembly And Operating Instructions Manual, Page: 29 / 80

Assembling
5.1 Preparatory work
M3302-01en Edition 09/2022 29
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Figure 5-1: Tolerances for finished bore
① Coupling parts 1 (1) or 2 (2) with long cent-
ring
② Coupling parts 1 (1) or 2 (2) with short cent-
ring
5.1.2 Mill the parallel keyway
5.1 Preparatory work
Position of the parallel keyway
Arrange the parallel keyway in the centre between the tapped holes or holes.
Applicable standards
• If the coupling is intended for use under normal operating conditions, mill the parallel
keyway according to DIN 6885/1 ISO JS9.
• If the coupling is intended for reversing operation, mill the parallel keyway according to
DIN 6885/1 ISO P9.
• If you want to mill a parallel keyway that does not correspond to DIN 6885/1, please con-
sult Flender.
5.1.3 Machining an axial locking mechanism
5.1 Preparatory work
The coupling part is secured by a set screw or an end plate to prevent axial movements.
Please consult Flender if you want to use an end plate.
Note the following when using a set screw:
• Diameter and axial position of the tapped hole in the hub
• Position of the tapped hole with respect to the parallel keyway
• Selection of the set screw
Diameter and axial position of the tapped hole in the hub
The following diagram shows the axial position of the tapped hole.