Three-phase squirrel cage induction motors in flameproof enclosure type ASA and E2-ASA
frame size 63 – 355
12. Timetable with completion and greasing intervals of regreasing
ball bearings
Table
4
Horizontal mounting IM B
Operating
conditions
Frame
size
Bearing
Speed
[rpm]
Hour/day
[hours]
Bearing
operating
temperature
[
C]
Regreasing
interval
[hours]
Compl.
interval
[hours]
Grease
quantity
[g]
Normal
63
÷
78
1700
≤
2970
High
78
÷
93
4800
800
Normal
63
÷
78
4200
6314
≤
1470
High
78
÷
93
12100
2100
26
Normal
63
÷
78
3700
280
6316
≤
1470
High
78
÷
93
10700
1900
33
Normal
63
÷
78
1400
≤
2970
High
78
÷
93
4500
700
Normal
63
÷
78
4000
6315
≤
1470
High
78
÷
93
11400
2000
30
315S/M
6317
≤
1470
24
Normal
63
÷
78
10000
3500
37