3Aam101050 E Rev. B - ABB AMD Rg 355 Installation, Operation And Maintenance Instructions

Installation, operation and maintenance instructions

High voltage flameproof motors for explosive atmosphere
AMD Rg 355-400-450-500
Recommended tightening torque for bolts on the motor
Recommended tightening torque for bolts on the motor
Recommended tightening torque for bolts slightly coated with oil.
Bolt size
Torque (Nm)
(lbf ft)
Bolt size
Torque (Nm)
(lbf ft)
Table below is related to cast iron frame motors
Thread Size
[-]
M20
M24
M27
NOTE: Do not use Molybdenum di-sulphide
M 8
20
14.7
M 20
330
243.4
Tightening Torque for screws with spindle nut in cast iron
Tightening Torque Tightening Torque
[Nm]
110/135/155 81.1/99.6/114
195/230
290/380
M 10 M 12
40 70
29.5 51.6
M 24 M 30
580 1150
427.8 848.2
Cast iron spindle nut material
(lbf ft)
EN GJL-250/EN GJL-300/ EN GJL 350
143.8/169.6 EN GJL-250/EN GJL-300
213.9/280.3 EN GJL 350/EN GJS 450
Sheet No
3AAM101050 E
Rev. B 01.2023
Page 1 of 1
M 16
170
125.4
M 36
2000
1475.2
Issued by: MOLM