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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 10 of 11
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Table 14 AMD with horizontal assembly and rib cooling circuit, casing in steel, IIB / IIC, operating at 50 Hz and 60 Hz*.
Size
N° of Poles
2
4
6
8
10
12
450...R…M
54000
90000
90000
90000
90000
90000
500...R…M
40000
45000
45000
45000
60000
60000
* If the operating frequency is 60 Hz, the values in the table are to be divided by 1.2
Table 15. AMD with horizontal assembly and rib circuit cooling, IIB/IIC, casing in cast iron, operating at 50 Hz and 60 Hz*.
Size
N° of Poles
2
4
6
8
10
12
355.. R..gM(H,S)
100000
100000
100000
/
/
/
400...R..gM(H,S)
100000
100000
100000
100000
/
/
450...R..gM(H,S)
55000
58000
68000
90000
100000
100000
500…R..gM(H,S)
50000
55000
68000
9000
100000
100000
* If the operating frequency is 60 Hz, the values in the table are to be divided by 1.2
Table 16. AMD with tube cooling circuit and horizontal assembly, operating at 50 Hz and 60 Hz*.
Size
N° of Poles
2
4
6
8
10
12
500…T
100000
90000
100000
100000
100000
100000
560…T
90000
100000
100000
100000
100000
100000
630…T
/
100000
100000
100000
100000
100000
710…T
/
100000
100000
100000
100000
100000
900…T
/
60000
70000
100000
85000
95000
14
16
18
900…T
100000
100000
100000
* If the operating frequency is 60 Hz, the values in the table are to be divided by 1.2
Table 17. AMD with vertical assembly and rib cooling circuit, casing in steel, IIB / IIC, operating at 50 Hz and 60 Hz*.
Size
N° of Poles
2
4
6
8
10
12
450...R…M
50000
100000
100000
100000
100000
100000
500...R…M
/
40000
40000
40000
40000
40000
* If the operating frequency is 60 Hz, the values in the table are to be divided by 1.2
Table 18. AMD with vertical assembly and rib circuit cooling, IIB/IIC, casing in cast iron, operating at 50 Hz and 60 Hz*.