KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex-ELASTIC
®
Operating/Assembly Instructions
Type HEW and HEW-ZS
KTR-N
Sheet:
Edition:
40114 EN
8 of 20
5
Drawn:
08.11.11 Pz/Hk
Replaced for:
KTR-N valid from 08.04.04
Please note protection
mark ISO 16016.
Verified:
09.11.11 Pz
Replaced by:
4 Assembly
4.2 Hint Regarding the Finish Bore
STOP
D A N G E R !
The maximum permissible bore diameters d (see table 1
to 3 in chapter 1 - Technical Data) must not be exceeded.
If these figures are disregarded, the coupling may tear.
Rotating particles may cause serious danger.
Hub bores or coupling flange bores machined by the customer
have to observe concentric running or axial running,
respectively (see illustration 9).
Please make absolutely sure to observe the figures for d
max
.
Carefully align the hubs or coupling flange when the finish
bores are brought in.
Please use a setscrew according to DIN EN ISO 4029 or an
end plate to fasten the hubs or coupling flange axially.
Illustration 9: concentric running
and axial running
!
C A U T I O N !
The orderer is responsible for all subsequently made machinings to unbored or pilot bored
and to finish machined coupling parts and spare parts. KTR does not assume any warranty
claims resulting from insufficient remachining.
P R E C A U T I O N !
KTR supplies unbored or pilot bored coupling parts and spare parts on explicit customer´s
request. These parts are additionally labelled with the symbol
.
Table 5: setscrews DIN EN ISO 4029
Size
42 48 65 80
G
80
100
125
G
125
150
Screw
size
M8 M8 M10 M10 M10 M12 M16 M16 M20
Tightening torque
T
A
[Nm]
10 10 17 17 17 40 80 80 140
Table 6: Recommended combinations of fit acc. to DIN 748/1
Bore [mm]
above to
Shaft tolerance
Bore tolerance
50
k6
50
m6
H7
(KTR-Standard)
If a feather key is intended to be used in the hub, it should correspond to the tolerance ISO JS9 (KTR-Standard)
with normal operating conditions or ISO P9 with heavy operating conditions (frequently alternating torsional
direction, shock loads, etc.).
The transmissible torque of the shaft/hub connection must be checked by the orderer, and he is responsible for
the same.
