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Installation, operation and maintenance instructions
High voltage flameproof motors for explosive atmosphere
AMD Rg 355-400-450-500
Rolling bearings maintenance and checking
Issued by: MOLM
Sheet No.
3AAM101040 E
Rev. B
01.2023
Page 8 of 11
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en.
Table 10. Lubrication frequency, in hours, for operation at 50 Hz and horizontal assembly, for AMD motors with rib
cooling circuit, IIB/IIC, cast iron frame.
Size
N° of Poles
Grease (g)
2
4
6
8
10
12
2 poles
4-n poles
355...R..gM(H,S)
3100
8100
8800
/
/
/
35
60
400...R..gM(H,S)
2500
7000
8800
8800
/
/
45
60
450...R..gM(H,S)
1600
3000
5000
6500
7500
8000
45
75
500…R..gM(H,S)
1200
2600
5050
7000
7450
9550
45
104
Table 10 A. Lubrication frequency, in hours, for operation at 60 Hz and horizontal assembly, for AMD motors with
fin cooling circuit, IIB/IIC, cast iron frame.
Size
N° of Poles
Grease (g)
2
4
6
8
10
12
2 poles
4-n poles
355...R..gM(H,S)
1300
6600
7300
/
/
/
35
60
400...R..gM(H,S)
1200
5000
7300
7300
/
/
45
60
450...R..gM(H,S)
1000
2100
4100
5700
6900
7900
45
75
500…R..gM(H,S)
NA
1750
3900
5750
6350
8350
45
104
Table 11. Lubrication frequency, in hours, for operation at 50 Hz and vertical assembly, for AMD motors with rib
cooling circuit, IIB/IIC, cast iron frame.
Size
N° of Poles
Grease (g)
2
4
6
8
10
12
2 poles
4-n poles
355...R..gM(H,S)
1500
4000
5500
/
/
/
35
60
400...R..gM(H,S)
1250
3500
5000
/
/
/
25
75
450...R..gM(H,S)
800
1500
2500
3300
3900
4400
45
75
500…R..gM(H,S)
NA
2100
4000
5600
6800
7750
NA
100
Table 11 A. Lubrication frequency, in hours, for operation at 60 Hz and vertical assembly, for AMD motors with
fin cooling circuit, IIB/IIC, cast iron frame.
Size
N° of Poles
Grease (g)
2
4
6
8
10
12
2 poles
4-n poles
355...R..gM(H,S)
600
3300
4600
/
/
/
35
60
400...R..gM(H,S)
600
2500
4100
/
/
/
25
75
450...R..gM(H,S)
510
1100
2000
2800
3400
3900
45
75
500…R..gM(H,S)
NA
1400
3070
4600
5800
6800
NA
100
Table 12. Lubrication frequency, in hours, for operation at 50 Hz and vertical assembly, for AMD motors with ribs
cooling circuit, IIB/IIC, welded frame.
Size
N° of Poles
Grease (g)
2
4
6
8
10
12
2 poles
4-n poles
450...R…M
2000
3000
5000
6000
7000
8500
45
70
500...R…M
/
2500
4500
6000
7000
8000
/
80