Installation, operation and maintenance instructions
High voltage flameproof motors for explosive atmosphere
AMD Rg 355-400-450-500
Rolling bearing maintenance plan
Issued by: MOLM
Sheet No
3AAM101042 E
Rev. B
Page 1 of 1
01.2023
Part of machine
Sheet No.
Maintenance or inspection work
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Rolling bearings
Measure and record temperature at measuring points
provided, by hand checks or by thermometer if fitted.
1)3)
3)
Measure machine vibration using either the vibration
sensor provided or a portable instrument on:
horizontal machines: on bearing housing,
horizontal/vertical. Vertical machines: on end-shield,
horizontal in two directions.
3)
Measure and record condition of bearings using the
shock-pulse-method (e.g. SPM) and using record sheets
from e.g. SPM.
4)
Relubricate the bearings, only when the machine Is
running.
1)5) 1)5) 1)5)
Check bearing seals for oil leakage and clean if dirty.
3)
Replace worn parts (bearings, sliding or rubbing seals
etc.)
**)
Wash out bearings (rolling bearings) and repack with
grease.
1)
Check for rust.
6)
1) Applicable for grease lubricated rolling bearings.
3) Compare with earlier measurements and observations.
4) Always take measurements at same speed and operating conditions.
5) Consult relubrication intervals on maintenance instruction plates on the machine or refer to Outline drawing.
If bearing temperatures exceed 70°C and/or with dusty environment the relubrication and used grease removal intervals must
be shortened.
Machines which are often stationary must be relubricated after 1 year at the latest. This is necessary because of grease
ageing, possible condensation in the bearing housings etc.
6) Remove possible rust by using a fine oil stone. Where painting is not possible, coat bare surfaces with an anti-corrosion
covering.
**) At each complete overhaul or
immediately
when this appears necessary because of temperature, vibration or bearing
condition measurements. Experience has shown that failure of rolling bearings is not so much caused by material fatigue as
by wear. Wear is dependent upon the operating conditions.
