WEG M line Series, Installation, Operation And Maintenance Manual

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Installation, operation and maintenance manual – Squirrel cage motor – M line – Vertical 11371757
7.9.1.5 Alternative greases
If it is not possible to use the original grease, the
alternative greases listed in Table 7.2 can be used, under
the following conditions:
1.
The motor speed must not exceed the limit speed of
the grease, according to the type of rolling bearing, as
informed in Table 7.3;
2. The lubrication interval must be corrected by
multiplying the interval informed on the bearing
nameplate by the multiplication factor informed in
Table 7.2;
3. Use the correct procedure to change the grease,
according to section 1.1.1.1 of this manual.
Table 7.2: Options and characteristics of the alternative
greases for regular applications
Manufacturer Grease
Constant
operating
temperature
(°C)
Multiplication
factor
Exxon Mobil
UNIREX N3
(Lithium Complex
Soap)
(-30 to +150) 0.90
Shell
ALVANIA RL3
(Lithium Soap)
(-30 to +120) 0.85
Petrobras
LUBRAX
INDUSTRIAL GMA-2
(Lithium Soap)
(0 to +130) 0.85
Shell
STAMINA RL2
(Diurea Soap)
(-20 to +180) 0.94
SKF
LGHP 2
(Polyurea Soap)
(-40 to +150) 0.94
Table 7.3 shows the most common rolling bearings used in vertical motors, the quantity of grease and the speed limit for
using alternative greases.
Table 7.3: Application of alternative greases
Rolling
bearing
Grease
quantity
(g)
Limit speed of the grease [rpm]
Vertical motors
Shell STAMINA
RL2
SKF LGHP 2 Esso UNIREX N3
Shell ALVANIA
RL3
Petrobras
LUBRAX Industrial
GMA-2
6215 15 3600 3600 3600 3000 3000
6217 20 1800 1800 1800 1800 1800
6220 30 1800 1800 1800 1800 1800
6222 40 1800 1800 1800 1800 1800
6224 45 1800 1800 1800 1800 1800
6228 55 1800 1800 1800 1800 1500
6232 70 1800 1800 1800 1500 1200
6236 85 1800 1800 1500 1500 1200
6240 105 1800 1800 1200 1200 1000
6048 100 1500 1500 1200 1200 1000
6052 130 1500 1500 1200 1000 900
6064 290 1200 1200 1000 900 750
7216 20 3600 3600 3600 3000 1800
7218 25 1800 1800 1800 1800 1800
7222 40 1800 1800 1800 1800 1800
7224 45 1800 1800 1800 1800 1800
7228 55 1800 1800 1800 1800 1500
7322 60 1800 1800 1800 1800 1500
7324 70 1800 1800 1800 1800 1500
7326 80 1800 1800 1800 1500 1200
7328 95 1800 1800 1800 1500 1200
7330 105 1800 1800 1500 1500 1200
7332 115 1800 1800 1500 1200 1200
7332 DT 230 1800 1800 1500 1200 1200
7334 DT 260 1800 1800 1500 1200 1000
7338 DT 310 1500 1500 1200 1200 1000