GEAR-FLEX COUPLING
RE-OM-G-04/00-05/15
Page 15
5.2.1 BOLT TIGHTENING TORQUE
TABLE ‘D’
Sr.
No.
COUPLING SIZE
(RGD/RGS)
BOLT
TIGHTENING
TORQUE Nm
1
10
6
2
15
21
3
20
50
4
25
97
5
30
97
6
35
167
7
40
167
8
45
167
9
50
265
10
55
265
11
60
265
12
70
396
13
80
334
14
90
653
15
100
653
If the coupling is to be used below ground in potentially explosive
areas, the coupling, which is made of steel, must be provided with a
robust casing to avoid the risk of ignition from e.g. friction, impact or
friction sparks.
The depositing of heavy metal oxides (rust) on the coupling must
be avoided by the casing or other suitable precautions.
