Installation & Operating Manual /DISC-O-FLEX/RLM,RLMK
RATHI TRANSPOWER PVT.LTD. Gaia Apex,S No 33/2D,Viman Nagar
R-II-D-03/02-09/20
Pune, 411014
Page 6
of 15
Table 3 : Misalignment & Tightening Torque
Gap ‘G’ in above table is given when angular and axial misalignments are zero.
# SPAN = DBSE – G
For RLMK Couplings, parallel misalignment is zero.
3.4
Final Assembly
RLM/RLMK couplings are supplied with fully assembled condition with tightened
cleveloc nuts(7) at RTPL to specified tightening torque (Table 3).
Ensure hubs have been mounted as shown in fig.4,to maintain correct DBSE .
3.4.1
RLM
Support the center spacer between two hubs and ensure small holes of spacer flange
will be in line with the large holes of the hub.
Insert Allen head bolts with sleeves from hub side, first through the large holes and
then small holes by holding blade pack assembly between hubs & center spacer.
3.4.2
RLMK
The large holes of Hub-II should be in line with the small holes of Hub-I
Insert coupling bolts from driven hub side through small hole and small length sleeves
from driving side.
Insert coupling bolts with long sleeves through the large holes of driven hub
To avoid loosening of nut, apply thread locker, loctite 270 solution on threads before
tightening the bolts
Tighten the cleveoc nut with to the required tightening torques given in table 3.
Follow the same procedure from other side also for RLM.
Measure gap ‘G’ mentioned in table 2 , which should be equal throughout on both sides.
Customer must provide required safety guards, RTPL does not supply safety guards or
shields.
PERMISSIBLE MAXIMUM MISALIGNMENTS
TIGHTENING TORQUE
Coupling
Size
Angular (X)
Axial
(± mm)
Parallel
(mm/mm)
SPAN) # (P)
* GAP ‘G’
(mm)
Coupling bolt
Degree per
blade assly.
Total
Indicated
Reading
(TIR) (mm)
Size
Value
(Nm)
10
0.75°
0.5
1
0.013
6.5
M6
10
35
6.5
M6
10
95
1.5
8
M8
23
170
9.5
M10
46
220
12
M12
80
400
13
M14
129
520
2.8
2
14.4
M16
150
1000
16.2
M18
205
1300
19.5
M20
285
2000
21.5
M22
380
2500
23.5
M24
400
