ROTEX
®
GS
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
45510 EN
25 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:
The power transmission of ROTEX
®
GS clamping hubs (hub type 2.0, 2.5 and 2.8) is frictionally engaged.
With hub type 2.1, 2.6 and 2.9 a feather key additionally provides for positive locking power transmission.
If used in potentially explosive atmospheres all screw connections must be secured against
working loose additionally, e. g. conglutinating with Loctite (average strength).
•
Clean and degrease the hub bore and the shaft.
•
Lightly detach the clamping screws.
•
Slip the hub onto the shaft. Please observe dimension l
1
or l
2
.
•
Tighten the clamping screws at the tightening torques specified in
table 4.
With hub type 2.8 or 2.9 (with feather keyway) the screws have to be
tightened alternately in equal steps at the tightening torques specified in
table 6.
Illustration 20: Assembly of clamping hub
Please note: hub type 2.8 or 2.9
have 2 clamping screws
!
The transmittable friction torques of the clamping hubs
depend on the bore diameter.
Hubs, clamping hubs or similar types without feather keyway may be used in category 3
only and are marked with category 3 accordingly.
!
If the clamping screws are not tightened at the correct tightening torque, there is the risk of
a) a fracture of the hub 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
The power transmission of
ROTEX
®
GS
clamping hubs is frictionally engaged. The necessary surface pressure is
transmitted via the clamping ring with internal taper to the taper hub and consequently to the shaft. The friction
torques specified in table 5 to 7 consider a fit pair H7/k6, from Ø55 G7/m6. With a bigger fitting tolerance the
friction torques specified in table 9 to 11 are reduced.
The strength and dimensions of the shafts (specifically hollow shafts) have to be dimensioned such that sufficient
safety against plastic deformation is ensured. This may roughly be reviewed as per the following criterion.
4
Assembly
4.5 Assembly of the clamping hubs (hub types 2.0, 2.1, 2.5, 2.6, 2.8 and 2.9)
4.6 Assembly of clamping ring hubs (hub type 6.0 light, 6.0 steel and 6.0)