42 – EN ABB Motors and Generators | 3GZF500730-70 rev. C RU-EN 01-2016
Duty hours for permanently greased bearings at ambient
temperatures of 25 °C and 40 °C are:
Frame size Poles
Duty hours
at 25 °C
Duty hours
at 40 °C
71 2 67 000 42 000
71 4
–
8 100 000 56 000
80-90 2 100 000 65 000
80-90 4
–
8 100 000 96 000
100-112 2 89 000 56 000
100-112 4
–
8 100 000 89 000
132 2 67 000 42 000
132 4
–
8 100 000 77 000
160 2 60 000 38 000
160 4
–
8 100 000 74 000
180 2 55 000 34 000
180 4
–
8 100 000 70 000
200 2 41 000 25 000
200 4
–
8 95 000 60 000
225 2 36 000 23 000
225 4
–
8 88 000 56 000
250 2 31 000 20 000
250 4
–
8 80 000 50 000
Data is valid up to 60 Hz.
7.2.2 Motors with re-greasable bearings
Lubrication information plate and general lubrication
advice
If the machine is equipped with a lubrication information
plate, follow the given values.
Greasing intervals regarding mounting, ambient tempera-
ture and rotational speed are defined on the lubrication
information plate.
During the first start or after a bearing lubrication, a tem-
porary 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.
After re-greasing a Ex t motor, clean the motor end shields
so they are free of any dust layer.
A. Manual lubrication
Re-greasing 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 re-grease 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 three if a central lubrication
system is used. When using a smaller automatic re-grease
unit (one or two cartridges per motor) the normal amount
of grease can be used.
When 2-pole motors are automatically re-greased, the
note concerning lubricant recommendations for 2-pole
motors in the Lubricants chapter should be followed.
The used grease should be suitable for automatic lubrica-
tion. The automatic lubrication system deliverer and the
grease manufacturer’s recommendations should be
checked.
Calculation example of amount of grease for auto-
matic lubrication system
Central lubrication system: Motor IEC M3_P 315_ 4-pole
in 50 Hz network, re-lubrication interval according to table
below is 7600 h/55 g (DE) and 7600 h/40g (NDE):
(DE) RLI = 55 g/7600h*3*24 = 0,52 g/day
(NDE) RLI = 40 g/7600h*3*24 = 0,38 g/day
Calculation example of amount of grease for single
automation lubrication unit (cartridge)
(DE) RLI = 55 g/7600 h
*
24 = 0,17 g/day
(NDE) RLI = 40 g/7600 h
*
24 = 0,13 g/day
RLI = Re-lubricaion interval, DE = Drive end, NDE = Non drive end
7.2.3 Lubrication intervals and amounts
Lubrication intervals for vertical machines are half of the
values shown in the table below.
As a guide, adequate lubrication can be achieved for the
following duration, according to L
1
. For duties with higher
ambient temperatures please contact ABB. The informa-
tive formula to change the L
1
values roughly to L
10
values
is: L
10
= 2.0 x L
1
with manual lubrication
The lubrication intervals are based on a bearing operating
temperature of 80 °C (ambient temperature +25 °C).
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