Position of the tapped hole with respect to the parallel keyway
The tapped hole for the set screw is generally positioned on the parallel keyway. This does
not apply to the coupling parts listed in the following table.
Table 5-4 Position of the tapped hole with respect to the parallel keyway
Coupling part Size Finished bore
[mm]
Position of the tapped hole
1 58 / 66 ≥ 15 Offset 180° relative to parallel keyway
68 / 76 ≥ 20 Offset 144° relative to parallel keyway
80 / 88 ≥ 25 Offset 180° relative to parallel keyway
95 / 103 ≥ 38 Offset 180° relative to parallel keyway
2 110 / 118 ≥ 30 Offset 180° relative to parallel keyway
4 58 / 66 ≥ 18 Offset 180° relative to parallel keyway
68 / 76 ≥ 20 Offset 180° relative to parallel keyway
Selection of the set screw
CAUTION
Physical injury
Danger of injury from protruding set screw.
● Please observe the information about selecting the set screw.
As set screws use threaded studs in accordance with ISO 4029 with a toothed cup point. The
size of the set screw is determined by the bore made. The set screw should fill out the tapped
hole as much as possible and must not protrude beyond the hub.
5.1.4 Balancing the coupling
Notes on balancing the coupling
NOTICE
Damage to coupling part 1 (1)
If you completely drill through the base of a flexible element pocket on coupling part 1 (1),
then coupling part 1 (1) is no longer allowed to be used for operation.
● Please observe the stipulations about machining the balancing hole.
Assembly
5.1 Preparatory work
N-EUPEX / N-EUPEX DS 3100en
28 Operating Instructions 10/2017