70 | 180R9346 | AQ240486503020en-001702
© Danfoss | 2023.03
Operation guide
Installation, Operation and Maintenance APP 53-92 pumps
BoWex-ELASTIC
®
Operating/Assembly instructions
Type HEW, HEW Compact and HEW-ZS
KTR-N
Sheet:
Edition:
40114 EN
10 of 22
7
Please observe protection
note ISO 16016.
Drawn:
2017-04-24 Shg/Hk
Replacing:
KTR-N dated 2013-06-10
Verified:
2017-04-24 Shg
Replaced by:
STOP
The maximum permissible bore diameters d (see table 1 to 5
in chapter 1 - technical data) must not be exceeded. If these
figures are disregarded, the coupling may tear. Rotating par-
ticles may cause danger to life.
Bores on the hubs/coupling flange machined by the customer
have to observe concentricity or axial runout (see illustration
12).
Please make absolutely sure to observe the figures for Ø d
max
.
Carefully align the hub or coupling flange when the finish
bores are drilled.
Provide for a setscrew according to DIN EN ISO 4029 with a
cup point or an end plate to fasten the hub or coupling flange
axially.
Illustration 12: Concentricity and axial
runout
!
The customer bears the sole responsibility for all machining processes performed subse-
quently on unbored or pilot bored as well as finish machined coupling components and
spare parts. KTR does not assume any warranty claims resulting from insufficient rema-
chining.
Table 7: Setscrews DIN EN ISO 4029
Size
42
48
65
80
G 80 100
125 G 125 150 G150 200 G 200
Thread size
M8
M8
M10 M10 M10 M12 M16 M16 M16 M16 M20 M20
Tightening torque
T
A
[Nm]
10
10
17
17
17
40
80
80
80
80
140
140
Table 8: 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 stand-
ard) with normal operating conditions or ISO P9 with difficult operating conditions (frequently alternating torsional
direction, shock loads, etc.).
The transmittable torque of the shaft-hub-connection must be reviewed by the customer and is subject to his re-
sponsibility.
4
Assembly
4.2 Advice for finish bore