Instructions for use and maintenance
Electric gearmotors 24-400 V AC
Page
13
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16
Replacement of shaft ring gasket
Reaching the end of the useful life, the veil of oil at the sealing lip increases and slowly a
measurable loss is formed with oil dripping. It is therefore necessary to replace the ring gasket.
The area between the sealing lip and the protective lip should be filled with approximately 50
% grease during assembly (recommended grease type: PETAMO GHY 133N). After mounting,
the new ring gasket shall not be in the trace of the previous gasket.
Re-lubrication of bearings
Completely replace the grease in rolling bearings that do not have oil lubrication and in the holes
of the latter up to above the oil level (recommended grease type: PETAMO GHY 133N).
General review
For this operation it is necessary to completely disassemble the gearbox. Perform the following
operations:
–
clean all the components of the gearbox,
–
check that all the components of the gearbox do not present any damage,
–
replace all damaged components,
–
replace all rolling bearings,
–
replace the anti-meter devices, if any,
–
replace all gaskets and seals,
–
replace the plastic and elastomer parts of the motor coupling.
The general audit shall be carried out at a qualified workshop with appropriate equipment and
by qualified personnel in accordance with national rules and regulations.
