Motors With Regreasable Bearings; Lubrication Intervals And Amounts - ABB Low Voltage Motors Manuel D'installation, D'exploitation Et De Maintenance

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.
– 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.
ABB/Manual for Low Voltage Motors 01-2009
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 . For duties with higher ambient
1
temperatures please contact ABB. The formula to change
the L values roughly to L
1 10
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.
values: L = 2.7 x L .
10 1
EN-15