20
of compression, the phenomena consequential to the peak load may
trigger lateral loads and instability.
e) Asynchromism: if several screw jacks are connected through
transmission shafts the verification of their perfect alignment, in
order to avoid overloads on the worm screws is suggested.
The use of joints capable of absorbing alignment errors, without
losing the torsion rigidity necessary to ensure the synchronization of
the transmission is also recommended.
f) Corrosion: it is necessary to verify the corrosion resistance of the
constituent components depending on the work environment.
1.3.3 Risks due to falling or ejected objects
If appropriate measures are not taken, the mobile elements, spindle
(6) and nut (7), respectively for TP and TPR models, can come off of
the transmission fixed part.
1.3.4 Risks due to surfaces, edges or angles
The screw jacks have sharp edges that, even if blunted, can present
both blunt and sharp residual risks.
1.3.7 Risks related to moving parts
Some constituent components are not in the casing; for this reason
they can present residual risks regarding their movement. The
following is a non-exhaustive list of moving parts.
Summary of Contents for TP
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