USE AND MAINTENANCE MANUAL
2-Speed Gearboxes Series CE
M
.CE.GEN.ENG.DOCX
Issued
2018
Rev.03
Page 18 / 59
3.1.3 Matching motor - gearbox balancing
➢
If the motor shaft is straight (no key)
, there is no balancing problem because both the motor
shaft and the gearbox pinion are balanced: the gearbox can be fitted directly to the motor by
means of the clamping unit provided, see chapters 3.2.2/3.3.2.
➢
If the motor shaft has a key
, according to the balancing option, here are the possible
situations:
•
Motor and gearbox balanced with half key:
•
Pinion with 1 key-slot
: simply fit the key into the motor shaft slot and assemble the
gearbox with the motor following the instructions on chapters 3.2-3.3.
•
Pinion with 2 key-slots
: fit the driving key into the motor shaft slot, insert the
balancing key in the second pinion slot (opposite the first one) and assemble the gearbox
with the motor following the instructions on chapters 3.2-3.3.
•
Motor and gearbox balanced with full key:
•
In this case, the gearbox pinion has always two slots: simply fit the key into the motor
shaft slot and assemble the gearbox with the motor following the instructions on
chapters 3.2-3.3. No angular orientation is requested, any of the pinion slots can be used
as driving slot.
3.1.4 Screws tightening torque
All screws used on gearboxes are 12.9 class and must always
be tightened to the torques indicated in the chart.
Screws (12.9)
Tightening
Torque (Nm)
M5
10
M6
17
M8
40
M10
80
M12
140
M16
340
M20
660
Driving key
Balancing key
