Bearing Life And Lubrication - Danfoss VLT DriveMotor FCP 106 Design Manual

System Integration

3.3.4 Bearing Life and Lubrication

The life expectancy of the ball bearings is according to Table 3.6 and Table 3.7, when the following conditions are fulfilled:
•
Temperature of 80 °C (176 °F).
•
Radial forces in load point corresponding to half-shaft extension do not exceed the values specified in Table 3.6
and Table 3.7.
IE2 50 Hz 3-phase motors
Motor size Number of poles
2
71
4
2
80
4
2
90
4
2
100
4
2
112
4
2
132 S
4
2
132 M
4
2
160 M
4
2
160 L
4
Table 3.6 Permissible Forces, IE2 50 Hz 3-phase Motors
Permissible radial forces: Load point corresponding to half-shaft extension, 0 axial force assumed.
Permissible axial forces: 0 radial force assumed.
Permissible loads of simultaneous radial and axial forces can be supplied on request.
MG03M202
Design Guide
Permissible radial forces Permissible axial forces
Both directions
20000 h 40000 h 20000 h
F rad [N] F rad [N] F ax [N]
460 370 230
580 465 330
590 475 320
830 665 440
670 535 340
940 750 480
920 735 480
1290 1030 680
930 745 480
1300 1040 680
1350 1080 800
1900 1520 1130
1400 1120 780
1970 1575 1090
1550 1240 840
2170 1735 1180
1580 1265 820
2220 1775 1150
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Permissible axial forces
(IMB3) (IMV1)
Force upwards
40000 h 20000 h 40000 h
F ax [N] F ax [N]
175 260
250 350
255 340
350 470
260 380
365 470
360 540
530 740
380 560
540 750
625 1000
880 1320
610 990
850 1300
685 1180
950 1520
675 1180
925 1510
Permissible axial
forces (IMV1)
Force downwards
20000 h 40000 h
F ax [N] F ax [N] F ax [N]
205 210 170
275 300 240
280 290 220
380 410 310
315 310 235
385 440 330
460 430 325
620 620 465
475 400 300
630 600 450
845 610 460
1095 930 700
835 580 435
1080 890 670
975 500 395
1245 830 640
980 460 365
1245 790 610
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