MANUFACTURING FEATURES
• Gearboxes provides with trains of gears
at 2 or 3 stages of reduction.
• In the PL and PD gearboxes, the first and
second stages of reduction are performed
with helical toothed cylindrical
gears with accurately corrected profiles.
The third reduction stage is achieved by
adding a further reduction stage upstream
( gearbox input) consisting of two
cylindrical gears with corrected
toothing.
• They are manufactured in 5 sizes: 63 –
80 – 100 – 125 – 160 ( the number relevant
to gearbox size means the centerto-
center distance of the final reduction
stage according to the Renard series
R10) .
• The rated transmissible torques are included
in the range from 100 Nm. to 4015
Nm.
• Load capacities of toothing comply with
DIN 3990, UNI 8862, AGMA 2001 B88
norms and the ISO 6336 draft proposal,
both with the surface pitting resistance
and the tooth root bending strength calculation,
in view of an accurately balances
and extremely high nominal life.
• All gears are made in case-hardening
steel ( 20 Mn Cr 5 or materials of equivalent
strength and hardenability) and are
submitted to case-hardening, quenching
and stress-relieving, to give high resistance
to static and dynamic stresses and
to wear.
• Hollow output shafts ( standard solution)
are manufactured in nodular cast iron
GS-400.
• The solid output shafts, with single or
double extension ( optional solution) are
made in hardening and tempering steel
42 Cr Mo 4, or materials of similar properties.
• Housings are made in cast iron G 25
according to UNI 5007 specification