ABB AMD Rg 355 Installation, Operation And Maintenance Instructions page 77

Installation, operation and maintenance instructions

High voltage flameproof motors for explosive atmosphere
AMD Rg 355-400-450-500
Rolling bearings maintenance and checking
Table 12 A. Lubrication frequency, in hours, for operation at 60 Hz and vertical assembly, for AMD motors with
ribs cooling circuit, IIB/IIC, welded frame.
Size
450...R...M
500...R...M
Table 13. Lubrication frequency, in hours, for operation at 50 Hz and vertical assembly, for AMD motors with
tubes cooling circuit, IIB/IIC, welded frame.
Size
500..T
560..T
630..T
710..T
900..T
900..T
Table 13 A. Lubrication frequency, in hours, for operation at 60 Hz and vertical assembly, for AMD motors with
tubes cooling circuit, IIB/IIC, welded frame.
Size
500..T
560..T
630..T
710..T
900..T
900..T
The calculation has been made considering an environment temperature of 40°C; if the estimated temperature is
different. The values given are to be changed as a consequence; the lubrication frequency is to be halved every
15K over the reference value.
The lubrication intervals are not to be longer than once a year.
Because of the short distance between the fixed and rotating parts of the flame extinguisher, for explosion-proof
motors the maximum load that can be supported by the bearing is lower than for normal motors; this is why the
lubrication intervals are not reduced.
NOTE! The lubrication intervals indicated in the table are only indicative. For the correct values of the specific
application, always refer to the values indicated on the plate on board the machine.
The tables are also included on the life
This is calculated at 50 Hz as per ISO R 281-1.
N° of Poles
2 4 6
1300 2000 4000
/ 1800 3500
N° of Poles
2 4 6
/ 4000 6000
/ 3500 5500
/ 3000 5000
/ 2000 4000
/ / 2400
14
6000 6500
N° of Poles
2 4 6
/ 3000 5000
/ 2500 4500
/ 2000 4000
/ 1500 3000
/ / 1800
14
5300 5800
L
10h.
8 10 12
5500 6500 7500
5000 6500 7500
8 10 12
7500 8500 8800
7000 8000 8800
6500 7500 8500
5500 7000 8000
3600 4600 5400
16 18
6800
8 10 12
6500 7500 8500
6000 7000 8000
5500 6500 7500
4500 6000 7000
2800 3800 4600
16 18
6200
Sheet No.
3AAM101040 E
Rev. B 01.2023
Page 9 of 11
Grease (g)
2 poles 4-n poles
45 70
/ 80
Grease (g)
2 poles 4-n poles
/ 70
/ 80
/ 90
/ 55 x 2
/ /
6-n poles
2x130
Grease (g)
2 poles 4-n poles
/ 70
/ 80
/ 90
/ 55 x 2
/ /
6-n poles
2x130
Issued by: MOLM