FLENDER RUPER RBS, Assembly And Operating Instructions Manual, Page: 44 / 78

Servicing
8.2 Maximum permissible torsional backlash
44 Edition 09/2022 M3602-01en
8.2 Maximum permissible torsional backlash
8.2 Maximum permissible torsional backlash
In order to calculate the torsional backlash, rotate one coupling part without applying torque
up to the stop. Mark both of the coupling halves in the way shown in the diagram below. Turn
the coupling part in the opposite direction up to the stop. The markings on both halves will
then move apart. The distance between the markings corresponds to the torsional backlash.
ෙ
6
9
Figure 8-1: Markings for calculating the torsional backlash
Size 144 162
198
228
252
285
320
360
400
450
500
560
630
710
800
900
1 000
Maximum permissible
torsional backlash ΔS
V
[mm]
3.5 4.0 4.5 6.0 7.0 8.5 10.0 12.0 13.5
Table 8-2: Maximum permissible torsional backlash for the types RWB and RBS
8.3 Replacing wearing parts
8.3 Replacing wearing parts
DANGER
Danger due to bursting of the coupling
If you do not observe the information stipulated here regarding replacement of wearing
parts, this can lead to bursting of the coupling during operation. There is a risk of fatal in-
jury from flying fragments. Bursting of the coupling can lead to an explosion in potentially
explosive atmospheres.
• Please observe all the stipulations concerning the replacement of wearing parts.
Replace the buffers (5) if the maximum permissible torsional backlash has been reached.
The method used to replace the buffers (5) and remove the bolts (4) varies according to the
coupling size.
• Replacing buffers (5) up to coupling size 400 (Page 45)
• Replacing buffers (5) as of coupling size 450 to 630 (Page 45)
• Replacing buffers (5) as of coupling size 710 (Page 46)