ROTEX
®
SP "Non Sparking"
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40228 EN
14 of 28
6
Please observe protection
note ISO 16016.
Drawn:
2019-10-10 Pz/Bru
Replacing:
KTR-N dated 2017-01-02
Verified:
2019-10-10 Pz
Replaced by:
Table 9: Setscrew DIN EN ISO 4029
Size
24
28
38
42
48
55
65
Dimension G
M5
M8
M8
M8
M8
M10
M10
Dimension t
1)
10
15
15
20
20
20
20
Dimension t
1
2)
6
7
7
10
10
12
12
Tightening torque T
A
[Nm]
2
10
10
10
10
17
17
1) Dimension t applies for types GN and GND only
2) Dimension t
1
applies for types EN and E4-DKM
Table 10: Cap screws DIN EN ISO 4762 - 12.9
Size
24
28
38
42
48
55
65
Dimension G
M6x20
M8x25
M8x30
M10x30
M12x35
M12x40
M12x40
Number z
1)
2
2
2
2
2
2
2
Tightening torque T
A
[Nm]
14
35
35
69
120
120
120
1) each DH clamping hub
Table 11: Recommended fit pairs acc. to DIN 748/1
Bore [mm]
Shaft tolerance
Bore tolerance
above
up to
50
k6
H7
(KTR standard)
50
m6
If a feather keyway is intended to be used in the hub, it should correspond to the tolerance ISO JS9 (KTR
standard) with standard operating conditions or ISO P9 with complicated operating conditions (frequently
alternating torsional direction, shock loads, etc.). The keyway should preferably be located between the cams.
With axial fastening by the setscrew the tapped hole should be located on the keyway.
The transmittable torque of the shaft-hub-connection must be reviewed by the customer and is subject to his
responsibility.
We recommend to inspect bores, shaft, keyway and feather key for dimensional accuracy
before assembly.
Heating the hubs lightly (approx. 80 °C) allows for an easier mounting on the shafts. Not
necessary with type ZS-DKM-C.
Please pay attention to the ignition risk in potentially explosive atmospheres!
STOP
Touching the heated hubs causes burns.
Please wear safety gloves.
!
With the assembly please make sure that the distance dimension E or a (see table 1 to 7) is
observed to allow for axial clearance of the spider when in operation.
Disregarding this advice may cause damage to the coupling.
If used in potentially explosive atmospheres the setscrews to fasten the hubs as well as all
screw connections must be secured against working loose additionally, e. g. conglutinating
with Loctite (average strength).
Basically align the spider centrally with the hubs or spacers after assembly.
4
Assembly
4.2 Advice for finish bore
4.3 Assembly of the coupling (general)
