Installation and opreating instructios for tor-
sionally stiff gear couplings
RDZ…DTO/…DFO
E 06.705
As of: 12.08.2020
Version: 02
Signed: SCCE
Checked: SCHW
No. of pages: 21 Page: 20
11. Maintenance and repair
The coupling must be regularly inspected and relubricated. The scope of the inspection includes:
-
examining the coupling alignment,
-
examining the coupling for damages,
-
examining the screw connections,
-
checking the tightness,
-
check the torsional backlash.
The tightening torques of the screws must be examined at regular intervals.
To ensure that the coupling can be safely operated, the specified wear values may not be ex-
ceeded. The wear due to torsional backlash is measured for the gear coupling.
Size
0010
0015
0020
0025
0030
0035
0040
0045
Torsional backlash X
max
[inch]
0.04
0.04
0.04
0.06
0.06
0.06
0.08
0.08
Size
0050
0055
0060
0070
0080
0090
0100
Torsional backlash X
max
[inch]
0.08
0.10
0.10
0.10
0.12
0.16
0.16
Table 11.1: Wear limit per hub
The inspection of these wear values is to be carried out as follows:
•
Turn hub (item 1) in one direction of rotation
•
Make a marking on the hub (item 1) and coupling halve (item 2) as shown in figure
11.1 (a)
•
Turn the hub (item 1) in the other direction of rotation until stop
•
The markings move apart
•
Measure the distance X
max
(see figure.1 (b)) between the markings and compare with
table 11.1
•
If value X
max
is reached, the coupling needs to be replaced.
