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

Duty hours for permanently greased bearings at ambient
temperatures of 25 °C and 40 °C are:
Frame size Poles
56 2
56 4-8
63 2
63 4-8
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 is valid up to 60 Hz.

7.2.2 Motors with regreasable bearings

Lubrication information plate and general lubrication
advice
If the motor is equipped with a lubrication information plate,
follow the given values.
Greasing intervals regarding mounting, ambient
temperature and rotational speed are defined on the
lubrication information plate.
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.
Standard_Manual_LV_Motors_ML_revF_Book.indb 15
Duty hours Duty hours
at 25° C at 40° C
52 000 33 000
65 000 41 000
49 000 31 000
63 000 40 000
67 000 42 000
100 000 56 000
100 000 65 000
100 000 96 000
89 000 56 000
100 000 89 000
67 000 42 000
100 000 77 000
60 000 38 000
100 000 74 000
55 000 34 000
100 000 70 000
41 000 25 000
95 000 60 000
36 000 23 000
88 000 56 000
31 000 20 000
80 000 50 000
Low voltage motors manual, 3GZF500730-85 Rev F 02-2015 | ABB Motors and Generators 15
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
motor is at a standstill.
– In this case, use only half the amount 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
lubrication. The automatic lubrication system deliverer and
the grease manufacturer's recommendations should check.
Calculation example of amount of grease for
automatic lubrication system
Central lubrication system: Motor IEC M3_P 315_ 4-pole in
50 Hz network, re-lubrication interval according to Table 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/7600*3*24 = 038 g/day
Calculation example of amount of grease for single
automation lubrication unit (cartridge)
(DE) RLI = 55 g/7600h*24 = 0,17 g/day
(NDE) RLI = 40 g/7600*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 motors 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
ambient temperatures please contact ABB. The informative
formula to change the L values roughly to L
1
= 2.0 x L , with manual lubrication.
1
The lubrication intervals are based on a bearing operating
temperature of 80 °C (ambient temperature +25 °C).
. For duties with higher
1
values is L
10 10
6/2/2015 6:44:25 PM