WEG W22Xdb - Page 42

42 | Flameproof motors
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Table 8-9 - Ball bearings lubrication intervals horizontal
mounting
BALL BEARING
Bearing
Poles
Operating Hours (h)
Grease
Quantity
(g)
50Hz
60Hz
6314
2
2300
1600
26
6316
2
1800
1100
33
4
4500
4200
6
4500
8
6318
2
1400
1000
41
6319
4
4300
3300
45
6
4500
4500
8
6322
4
3400
2500
60
6
4500
4300
8
4500
6324
4
3000
2100
72
6
4500
3900
8
4500
6326
4
2600
1800
81
6
4100
3500
8
4500
4500
6328
4
2300
1600
93
6
3800
3200
8
4500
4100
As an option, horizontal motors can be equipped
with roller bearings. Lubrication intervals for
horizontal mounted ribbed cooled and tube cooled
motors (50Hz and 60Hz) operating at an ambient
temperature range -20ºC up to +55ºC are present
in the Table 8-10:
Table 8-10 - Roller bearings lubrication intervals
horizontal mounting
ROLLER BEARING
Bearing
Poles
Operating Hours (h)
Grease
Quantity
(g)
50Hz
60Hz
NU218
2
1000
1000
24
NU220
2
1000
-
31
NU319
4
1700
1200
45
6
2800
2300
8
3500
3100
NU322
4
1200
1000
60
6
2200
1700
8
2900
2500
NU324
4
1000
1000
72
6
1900
1500
8
2600
2200
NU326
4
1000
1000
81
6
1700
1300
8
2400
2000
NU328
4
1000
1000
93
6
1500
1100
8
2200
1700
Lubrication intervals for horizontal mounted ribbed
cooled and tube cooled motors (50Hz and 60Hz)
with special mounting of two (2) bearings (one (1)
roller bearing and one (1) ball bearing) operating at
an ambient temperature range -20ºC up to +55ºC
are present in the Table 8-11:
Table 8-11 – Roller and Ball bearings lubrication
intervals horizontal mounting
ROLLER BEARING + BALL BEARING
Bearing
Poles
Operating Hours (h)
Grease
Quantity
(g)
50Hz
60Hz
NU220+
6020
2
1000
-
31+18
NU234+
6034
4
1000
1000
81+55
6
1300
1000
8
1900
1500
NU238+
6038
4
1000
1000
94+68
6
8
1600
1200
NU328+
6328
4
1000
1000
93+93
6
1500
1100
8
2200
1700
Lubrication intervals for vertical mounted ribbed
cooled motors (50Hz and 60Hz) operating at an
ambient temperature range -20ºC up to +55ºC are
present in the Table 8-12 and Table 8-13:
Table 8-12 - Angular bearings lubrication intervals
vertical mounting rib cooled motors
ANGULAR CONTACT BALL BEARING
Bearing
Poles
Operating Hours (h)
Grease
Quantity
(g)
50Hz
60Hz
7316
2
1000
1000
33
7318
2
1000
1000
41
7319
4
2100
1600
45
6
2800
2600
8
3100
3000
7324
4
1500
1000
72
6
2200
1900
8
2600
2400
7326
4
1300
1000
81
6
2000
1700
8
2500
2200
7328
4
1100
1000
93
6
1900
1600
8
2300
2000