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Manual of Electric Motors
102
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For lubrication, use only manual grease gun.
Table 8.4
- Lubrication intervals for cylindrical roller bearings - HGF line
Frame
Poles
Bearing
designation
Amount of
grease (g)
Lubrication intervals (hours)
IEC
NEMA
50 Hz
60 Hz
315L/A/B and
315C/D/E
5006/7/8 and
5009/10/11
4
NU320
50
4300
2900
6 - 8
4500
4500
355L/A/B and
355C/D/E
5807/8/9 and
5810/11/12
4
NU322
60
3500
2200
6 - 8
4500
4500
400L/A/B and
400C/D/E
6806/7/8 and
6809/10/11
4
NU324
72
2900
1800
6 - 8
4500
4500
450
7006/10
4
NU328
93
2000
1400
6
4500
3200
8
4500
4500
500
8006/10
4
NU330
104
1700
1000
6
4100
2900
8
4500
4500
560
8806/10
4
NU228 + 6228
75
2600
1600
6 - 8
106
4500
4500
630
9606/10
4
NU232 + 6232
92
1800
1000
6
120
4300
3100
8
140
4500
4500
For each increment of 15 ºC above the bearing temperature, the relubrication intervals given in the Table must
be halved. The relubrication interval of motors designed by the manufacturer for mounting in horizontal position,
but installed in vertical position (with WEG authorization), must be halved.
For special applications, such as: high and low temperatures, aggressive environments, driven by frequency
inverter (VFD - frequency inverter), etc., please contact WEG about the required amount of grease and the
relubrication intervals.
If Motors are provided with a spring device for grease removal, the grease excess must be removed by pulling
the rod and cleaning the spring until the spring does not remove more grease.
8.2.1.1. Motor without grease fitting
Motors without grease fittings must be lubricated in accordance with the existing Maintenance Plan. Motor
disassembly must be carried out as specified in Item 8.3. If motors are fitted with shielded bearings (for
example, ZZ, DDU, 2RS, VV), these bearings must be replaced at the end of the grease service life.
8.2.1.2. Motor with grease fitting
To lubricate the bearings with the motor stopped, proceed as follows:
g
Before lubricating, clean the grease nipple and immediate vicinity thoroughly;
g
Lift grease inlet protection;
g
Remove the grease outlet plug;
g
Pump in approximately half of the total grease indicated on the motor nameplate and run the motor for about
1 (one) minute at rated speed;
g
Switch-off the motor and pump in the remaining grease;
g
Lower again the grease inlet protection and reinstall the grease outlet protection.
To grease the motor while running, proceed as follows:
g
Before lubricating, clean the grease nipple and immediate vicinity thoroughly;
g
Pump the total grease indicated on the motor nameplate;
g
Lower again the grease inlet protection.
8.2.1.3. Compatibility of the Mobil Polyrex EM grease with other greases
The Mobil Polyrex EM grease has a polyurea thickener and a mineral oil thus being compatible with greases
that contain:
g
Lithium based thickener, lithium-based complex thickener, polyurea thickener and refined mineral oil;
g
The used grease must have in its formulation corrosion and oxidation inhibitors.
In general terms, greases with the same type of soap are compatible to each other. However, depending on the
proportion of the mixture there may be incompatibility. In such a case, it is not recommended to mix different
types of greases without contacting the supplier or WEG beforehand.
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Страница 13: ...TAB 1 DEVICE DATA SHEETS ...
Страница 18: ...TAB 2 APPROVED SUBMITTAL ...
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Страница 26: ...Your advantages our pumps ...
Страница 45: ...ADV 2 13E And what can we get flowing for you Your nearest contact Or visit www seepex com ...
Страница 117: ...TAB 3 INSTALLATION OPERATIONS AND MAINTENANCE ...
Страница 133: ...Page 37 ...
Страница 233: ...www weg net Manual of Electric Motors 64 ENGLISH Figure 2 1 IEC motor nameplate Page 135 ...
Страница 234: ...www weg net Manual of Electric Motors 65 ENGLISH Figure 2 2 NEMA motor nameplate Page 136 ...
Страница 306: ...TAB 4 AS BUILTS AND SUPPLEMENTAL INFORMATION ...
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