4
Mechanical installation
Installing the gear unit
Assembly and Operating Instructions – Gear unit series R..7, F..7, K..7, K..9, S..7, SPIROPLAN
®
W
26
4.2.1
Tightening torques for retaining screws
Mount the gearmotors with the following tightening torques:
Screw/nut
Tightening torque ± 10%
Strength class 8.8
Nm
M6
11
M8
25
M10
48
M12
86
M16
210
M20
410
M24
710
M30
1450
M36
2500
M42
4600
M48
6950
M56
11100
Mount the specified gearmotors in flange-mounted design with the following increased
tightening torques:
Flange Ø
mm
Gear unit
Screw/nut
Tightening torque ± 10%
Strength class 10.9
Nm
120
RF37
M6
16.5
140
RF37/RF47
M8
40.1
160
RF57
M8
40.1
450
RF147
M20
661
550
RF167
M20
661
60ZR
RZ37
M8
40
70ZR
RZ47
M8
40
80ZR
RZ57
M10
79
95ZR
RZ67
M10
79
110ZR
RZ77
M10
79
130ZR
RZ87
M12
137
250
FF77/KF77/ FAF77/KAF77
M12
137
21932786/EN – 05/2015