Axial Securing; Set Screws - Siemens FLENDER FLUDEX Series Operating Instructions Manual

6.1.3

Axial securing

The hub­carier part (120) and the brake drum or brake disk (32) are axially secured, preferably with
a locking plate and retaining screw (for tightening torques, see table 3). Before turning the recess in the
brake drum or brake disk (32), Flender must be consulted.
Table 3: Tightening torques of the retaining screws
Retaining-screw thread
Tightening torque [Nm]
For axially securing parts 1 and 11 always set screws must be used.
NOTICE
Damage to the coupling, damage to other components
Risk of damage to the coupling through incorrect rework (e.g. incorrect fit set­screw bore).
To prevent damage to the shafts, the set­screw bore should be arranged on the parallel keyway. In
exceptional cases the set screws must be offset 180° to the parallel keyway, if because of the diameter
of the drilled hole and hub core too little material is left between the parallel keyway and the hub core.
If the hub­carrier part (120) and brake drum od brake disk (32) have been manufactured with a larger bore,
due to which the use of a locking plate is no longer possible, these parts too are secured axially with a set
screw.
6.1.4

Set screws

Set screws with cup points to standard "DIN 916" must be used for set screws.
WARNING
Serious injury
Risk of serious injury through incorrect rework (e.g. set screw too long).
The length of the set screw must be selected so that it fills the threaded hole, but does not project from
the hub (L = M x 1.2).
min.
FLUDEX 4612 en
Operating instructions 10/2017
M6 M8 M10
10 25 49
M12 M16 M20
86 160 300
M24 M30
500 800
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