513289 PUBLICATION DATE 07/04 INSTALLATION AND MAINTENANCE MANUAL 21
5.7. TIGHTENING MOMENTS
WARNING !
REGULARLY, EVERY THREE MONTHS OR EVERY 500 WORKING HOURS (WHICH EVER COMES
FIRST) INSPECT THE TIGHTNESS OF THE BOLTS !
If any of the bolts has been damaged, exchange it with the bolt of the same strength value marked on its
head. The best way is to order the original part from manufacturer.
WARNING !
REPLACE THE DAMAGED BOLT WITH ONE OF THE SAME STRENGTH VALUE MARKED ON ITS
HEAD! IGNORING THE BOLT QUALITY AND MECHANICAL STRENGTH CAN CAUSE SERIOUS
BODILY INJURIES !
Tighten the loosened bolts using the torque value stated in the following table:
TIGHTENING MOMENTS VALUES OF BOLTS AND NUTS
BOLT (NUT) DIMENSION
NUMBER
OF PCS.
TIGHTENING
MOMENTS
(Nm)
TIGHTENING
MOMENTS
(lbf.ft)
NUT :
BEARING HOUSING
M20 4 + 4 220 162
BOLT :
TIGHTENING SLEEVE /
DRUM V-PULLEY
5/8“ x 1 3/4“ 3 170 125
Tab.5.7.
5.8. LUBRICATION
WARNING !
DO THE LUBRICATION WORK ONLY WHEN THE MAIN SWITCH IS OFF AND ALL COMPONENTS
HAVE BEEN STOPPED !
(IF NOT STATED OTHERWISE IN FOLLOWING INSTRUCTION).
Every time you use a grease gun especially for greasing bearings and seals, do it slowly - not faster than 5
strokes in 1 minute. The grease gun can create a high pressure which would cause the seal deformation
and consequent leakage. Never operate the grease gun faster even if the grease contain air gaps.
Over-lubrication can cause the same damage as an insufficient lubrication.
Always make sure that your grease gun is in perfect condition.
If you substitute the lubricant by another type make sure that these two kinds are compatible, otherwise
there is a risk of a bearing failure. For example lithium lubricants are compatible with calcareous lubricants
but not with sodium ones.
NEVER MIX PETROLEUM LUBRICANTS WITH SILICONE LUBRICANTS!
LUBRICATION POINTS, QUANTITY AND LUBRICATION PERIODS
LUBRICANT:
Use a multipurpose lithium lubricant containing high-pressure additives of consistency NLGI 2.
SKF - LGEP 2
ESSO - BEACON EP 2
LUBRICATORS:
Lubricators of main bearings and sealing are located on the bearing bodies, fig. 5.8. Lubrication point (2) is
intended for lubricating the bearing, lubrication point (3) is intended for lubricating the sealing. Put the machine
to spinning for approximately 10 min, so that an old grease in bearings warms up. Before you start lubrication
of bearings, remove the covers (1) from lubricating plugs. Press the lubricant in slowly and rotate with the
drum (it is necessary to brake off mechanically). Remove the surplus extruding grease. Be careful during
this activity, so that extruding grease from the rear bearing would not get to the pulley and the breaking disc.
After you finish lubrication, put the covers (1) back on lubricating plugs. After lubricating the sealing, extruding
grease can get to outer drum space. You will remove extruding grease by putting the machine in operation of
boiling without linen - the grease will be rinsed out.
!
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