ROTEX
®
GS
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
45510 EN
26 of 40
23
Please observe protection
note ISO 16016.
Drawn:
2020-02-10 Pz/Ht
Replacing:
KTR-N dated 2019-11-22
Verified:
2020-02-10 Pz
Replaced by:
For clamping connections with hollow shafts the
required internal diameter of the hollow shaft d
iW
is
calculated based on the following formula:
mm
R
p
2
R
d
d
2
,
0
p
W
2
,
0
p
iW
−
Shear stress on the internal shaft diameter for hollow
shaft:
2
2
W
W
tiW
mm
/
N
C
1
p
2
−
−
Shear stress for solid shaft:
2
W
tW
mm
/
N
p
−
=
R
p0.2
=
yield strength of shaft material [N/mm
2
]
d
iW
=
internal diameter of hollow shaft [mm]
p
W
=
surface pressure of hub/shaft [N/mm
2
]
d
=
shaft diameter [mm]
C
W
=
d
iW
/ d
The strength required is not provided if the hollow shaft bore exceeds the max. internal bore calculated or if the
shear stress exceeds the yield strength of the material.
For a detailed calculation please contact KTR.
If used in potentially explosive atmospheres all screw connections must be secured against
working loose additionally, e. g. conglutinating with Loctite (average strength).
•
Clean the hub bore and shaft and review for dimensional accuracy,
afterwards lubricate with a thin oil (e. g. Castrol 4 in 1, Klüber Quietsch-Ex
or WD 40).
Illustration 21: Assembly of
clamping ring hub with clamping ring
!
Oils and greases containing molybdenum disulfide or other
high-pressure additives as well as internal lubricants must
not be used.
•
Lightly untighten the clamping screw and pull the clamping ring from the
hub only marginally to make sure that the clamping ring is fitted loosely.
•
Shift the clamping ring hub onto the shaft. Dimension l
3
should at least be
observed (see table 8).
•
Tighten the clamping screws evenly crosswise gradually to the tightening
torque specified in table 8. Repeat this process until all clamping screws
have reached the tightening torque.
!
If the clamping screws are not tightened at the correct tightening torque, there is the risk of
a) a fracture of the hubs/cams and plastic deformation with a too high tightening torque T
A
b) early slippling, untightening of the screws with a too low tightening torque T
A
•
Applies with hub type 6.0 light only:
Tighten the clamping screws evenly gradually and crosswise at 1/3 or 2/3 tightening torque T
A
, respectively
(see table 8) until the ring gets in contact. Afterwards tighten the screws at the tightening torque mentioned in
table 8 one after another.
4
Assembly
4.6 Assembly of clamping ring hubs (hub type 6.0 light, 6.0 steel and 6.0)
