35
P
o w e r
T
r a n s m i s s i o n
CAUTION
Motor keying must be effected at the bench with coupling axis placed
horizontally. Before fitting the hydromechanic coupling on the machine, it
is necessary to observe the following steps:
- Stop the motor and wait for the rotating components to stop.
- Cut out the power supply and apply a safety padlock.
- Wait for the cooling, if needed (max 40°C).
4.2.1
Accurately clean the motor shaft surfaces and the seat of the hydromechanic
coupling
NOTE
The seats of the coupling are manufactured with tolerance H7 or G7,
that may result in an interference fit connection. A good connection between
shaftand seat must not show any interferences or too much backlash. Comply
with the values reported in the table.
4.2.2
Measure with a suitable micrometric tool the real dimension of the drive shaft
or the machine and the hydromechanic coupling.
CAUTION
The bore-shaft connection of the hydromechanic coupling must not
be a force fit and no flames or heaters must be used. DANGER OF SEAL
DAMAGING AND/OR IMPOSSIBLE DISASSEMBLING OF THE COUPLING.
4.2.3
In case of interference in the connection, it is necessary to make backlash
adjustments all along the drive shaft or machine using an abrasive cloth.
MOTOR
BACKLASH ON DIAMETER /HOLE/ SHAFT FOR ROTOMEC COUPLING
SPEED
H7
H7
H7
H7
G7
G7
G7
G7
G7
G7
G7
G7
G7
G7
G7
G7
G7
G7
14
19
24
28
38
42
48
55
60
65
70
75
80
90
100
110
125
140
UP TO 1500 rpm
MAX BACKLASH
(hundredths)
1.5
1.5
2
2
2
2.5
2.5
3
3
3
3
3
3
4
4
4
4
4
OVER 1500 rpm
MAX BACKLASH
(hundredths)
1
1
1
1
1.5
1.5
1.5
2
2
2
2
2
2
3
3
3
3
3
4.2.1
4.2.2
P
art
4 - i
nStallation
a
nd
c
oMMiSSioning
ROTOMEC
U
Se
and
M
aintenance
h
andbook