Motors With Regreasable Bearings; Lubrication Intervals And Amounts - ABB MT Serie Manual De Instalación, Funcionamiento, Mantenimiento Y Seguridad

Duty hours for permanently greased bearings at ambient
temperatures of 25 and 40° C are:
Lubrication intervals according to L
Frame size Poles
56-63 2-8
71 2
71 4-8
80-90 2
80-90 4-8
100-112 2
100-112 4-8
132 2
132 4-8
160 2
160 4-8
180 2
180 4-8
200 2
200 4-8
225 2
225 4-8
250 2
250 4-8
Data valid at 50 Hz, for 60 Hz reduce values for 20 %.
These values are valid for permitted load values given in
the product catalog. Depending on application and load
conditions, see the applicable product catalog or contact
ABB.
Operation hours for vertical motors are half of the above
values.

6.2.2 Motors with regreasable bearings

Lubrication information plate and general lubrication
advice
If the machine is equipped with a lubrication information
plate, follow the given values.
On the lubrication information plate, greasing intervals
regarding mounting, ambient temperature and rotational
speed are defined.
During the first start or after a bearing lubrication a
temporary temperature rise may appear, approximately 10
to 20 hours.
Some motors may be equipped with a collector for old
grease. Follow the special instructions given for the
equipment.
A. Manual lubrication
Regreasing while the motor is running
– Remove grease outlet plug or open closing valve if fitted.
– Be sure that the lubrication channel is open
– Inject the specified amount of grease into the bearing.
principle
10
Duty hours Duty hours
at 25° C at 40° C
40 000 40 000
40 000 40 000
40 000 40 000
40 000 40 000
40 000 40 000
40 000 32 000
40 000 40 000
40 000 27 000
40 000 40 000
40 000 36 000
40 000 40 000
38 000 38 000
40 000 40 000
27 000 27 000
40 000 40 000
23 000 18 000
40 000 40 000
16 000 13 000
40 000 39 000
– Let the motor run for 1-2 hours to ensure that all excess
grease is forced out of the bearing. Close the grease
outlet plug or closing valve if fitted.
Regreasing while the motor is at a standstill
If it is not possible to regrease the bearings while the
motors are running, lubrication can be carried out while the
machine is at a standstill.
– In this case use only half the quantity of grease and then
run the motor for a few minutes at full speed.
– When the motor has stopped, apply the rest of the
specified amount of grease to the bearing.
– After 1-2 running hours close the grease outlet plug or
closing valve if fitted.
B. Automatic lubrication
The grease outlet plug must be removed permanently with
automatic lubrication or open closing valve if fitted.
ABB recommends only the use of electromechanical
systems.
The amount of grease per lubrication interval stated in the
table should be multiplied by four if an automatic regreasing
system is used.
When 2-pole motors are automatically regreased, the note
concerning lubricant recommendations for 2-pole motors in
the Lubricants chapter should be followed.

6.2.3 Lubrication intervals and amounts

As a guide, adequate lubrication for motors with
regreasable bearings can be achieved for the following
duration, according to L
temperatures please contact ABB. The formula to change
the L values roughly to L
1
Lubrication intervals for vertical machines are half of the
values shown in the table below.
The lubrication intervals are based on an ambient
temperature +25°C. An increase in the ambient
temperature raises the temperature of the bearings
correspondingly. The values should be halved for a 15°C
increase and may be doubled for a 15°C decrease.
In variable speed operation (i.e. frequency converter supply)
it is necessary to measure the bearing temperature for
the whole duty range and if exceeds 80°C, the lubrication
intervals should be halved for a 15°C increase in bearing
temperature. If the motor is operated at high speeds, it is
also possible to utilize so called high speed greases, see
chapter 6.2.4.
WARNING
The maximum operating temperature of the grease
and bearings, +110°C, must not be exceeded.
The designed maximum speed of the motor must
not be exceeded.
Low voltage motor manual 01-2009 | ABB Motors and Generators EN-15
. For duties with higher ambient
1
values: L = 2.7 x L .
10 10 1