Specifications

Asynchronous Motors Ver. 0002 AM - 29
AM.13 MAINTENANCE INTERVALS
First inspection: in normal cases and after about 500 hours of operation, at any rate within a
year from start-up date. Check that the plate data are followed and there are no vibrations,
noises, high temperatures or structural damages to the motor and accessories.
Re-lubing of bearings:
Fagor recomends the lube oil from KLUBER (ISOFLEX LDS 18 SPECIAL A).
Depending on the type of bearing, dimensions, average speed and operating and temperature
conditions. From a minimum of about 1000 hours to a maximum of 8000 hours. At any rate
within 3 years.
a) Re-lube the bearings by putting in new grease of the same type or compatible with the
existing one.
b) Do not exceed the quantity of grease which could cause high temperatures and
contamination of the motor windings. The following formula can be used to establish the
quantity of grease to be put in:
Gp = D * B * 0,005
Gp = quantity of grease to be put in [gr]
D = external bearing diameter [mm]
B = bearing height [mm]
Replacement of the bearings: at the most, after 20000 hours of operation
a) Replace the bearings following the instructions indicated in the next paragraph.
b) The type and name of the bearing is indicated in the manual.
AM.13.1 BEARING REPLACEMENT
1) Extract the rotor from the stator paying the utmost attention not to damage the windings.
2) Position the rotor on a stable support and block it in order to prevent its rotation or
accidental fall.
3) Extract the bearing using a specific extractor inserting a copper or aluminum plate
between the shaft and the extractor’s pin in order not to damage the shaft or the thread, if
any.
4) Do not exert any pressure on the encoder/resolver shaft. Use a bushing if necessary.
5) Replace the bearing with others of the same type and dimension (pay attention to the
complete denomination indicated on the bearing).
6) In order to assemble the new bearings, use the specific tool or assemble it by warming it
up (max 100 ºC).
7) The use of a hammer is specifically forbidden.
8) Lube the non shielded bearings and proceed with the motor assembly. (For the grease
quantity to be put in and the type, please see the bearing manufacturer catalog).
9) At the end of the operation proceed to the break-in of the bearings, if necessary.