Instructions for use and maintenance
Electric gearmotors 24-400 V AC
Page
9
of
16
7.5
Gearbox Installation
Damage from overheating of the gearbox:
In the case of gear motors, ensure that the motor cooling air reaches the
gearbox unhindered.
For mounting, use ring eyebolts screwed to the reducer. No additional loads shall be attached
to the gearbox.
In the case of gearmotors, use also any eyebolt applied to the motor. Avoid pulling diagonally
from the eyebolts. Observe the safety signs.
The base or flange to which the gearbox is attached shall be resistant to oscillation, torsion and
level. The flatness of the crankcase or flange coupling surfaces shall be achieved according to
the tolerance class K of DIN ISO 2768-2. Care must be taken to remove any dirt on the coupling
surfaces of the gearbox, crankcase or flange.
The gearbox carcass must always be grounded. In the case of gear motors, grounding shall be
ensured by the connection of the motor.
The gearbox must be precisely aligned with the shaft of the machine to be operated to prevent
additional forces from being induced in the gearbox due to defective tightening.
Welding work on the gearbox is not permitted. The gearbox should not be used as a earth point
for welding operations, otherwise the bearings and gears could be damaged.
The reducer shall be installed in the correct position. Changing the mounting position after
delivery requires a correction of the amount of oil and often other measurements, such as the
mounting of encapsulated rolling bearings. Failure to respect the specified mounting position
may cause damage.
Use all gearbox fixing feet on one side or all flange screws. Use at least 8.8 quality screws. The
screws shall be tightened with the corresponding tightening torque. In particular, in the case of
gearboxes with feet and flange, screw without excessively tightening.
Oil control and discharge screws and venting screws shall be accessible.
7.6
Mounting hubs on gearbox shafts
Damage to the gearbox caused by axial forces.
Do not induce harmful axial forces in the reducer. Do not tap the hub with a
hammer
Mounting of motorcycle drive elements, such as coupling hubs and sprocket hubs on the inlet
shaft and on the outlet shaft of the gearbox, shall be carried out with suitable shrink disks that
do not induce harmful axial forces in the gearbox.
For shrinking use the front threading of the shafts. To facilitate assembly, apply the lubricant
before the hub.
