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4.4 ASSEMBLY AND ALIGNMENT OF SERIES AB ELASTIC COUPLING
4.4.1
Fit the hydromechanic coupling on the motor.
4.4.2
Fit the hub of the flexible coupling on the shaft of the machine to operate.
4.4.3
Then position the driven machine so that the shaft is coaxial to the hydromechanic
coupling
NOTE
To confirm coaxiality, it is necessary to verify with a ruler in at least 4
equidistant points, that the machined edges of the hub and the flange with guide
pins are levelled. To confirm the angle alignment, verify at least in 4 equidistant
points with a thickness gauge that the distance between the opposite faces
of both the hub and the flange with guide pins is uniform (see table, B1-B2
dimension).
4.4.4
Now the driven machine and the motor can be definitively fixed, providing for a
space equal to the “V” dimension between the hub and the fixing face rubber
sleeve of the flange with guide pins.
4.4.5
in the relevant housings, providing for a distance equal to the “V” dimension
shown in the table and fix the hub with proper setscrews.
AXIAL ERROR
ANGULAR ERROR
RADIAL ERROR
ROTOMEC
ELASTIC COUPLING
SIZE IN MM
PIN
SPARE PARTS
Size
Type
Ø O
Rated
torque
Nm
A
B1-B2 max
C
V
Thread Ø
Tightening
torque
Nm
Rubber
sleeve
Pin
Quantity
55
AB-5
186
950
0,18
1
2
4
M10
50
30
12
8
65
AB-6
224
2200
0,22
1,2
2
4
M14
138
40
18
8
75
AB-8/7
330
6500
0,35
1,7
3
6
M18
291
60
25
8
85
AB-8M
400
12000
0,35
2
3
6
M18
291
60
25
12
C
V
A
B2
B1
PIN
RUBBER
SLEEVE
FLANGE
HUB
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4.2.8
Start to install the hydromechanic coupling ROTOMEC,considering the type of
coupling at disposal (ALFA or BETA):
4.2.8a - ALFA COUPLINGS
To install the ALFA in-line hydromechanic couplings, it is necessary to assemble
the accessories (rubber element, hub, etc.) according to the instructions dealt
with in section 4.3 FITTING AND ALIGNMENT OF ROTOFLEXI FLEXIBLE
COUPLINGS or 4.4 FITTING AND ALIGNMENT OF AB series FLEXIBLE
COUPLINGS.
4.2.8b - BETA COUPLINGS
To install BETA hydromechanic couplings for belt drive, it is necessary to assemble
and tension the belts according to the instructions of the belt manufacturer.
CAUTION
Too loose belts may originate vibrations, while too stiff tensioning or
wrong alignment may cause excessive axial load and damage the seats of
the roller bearings of the coupling, motor or machine.
The assembly of the hydromechanic coupling on the hollow shaft side has
thus ended.
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4.3 ASSEMBLY AND ALIGNMENT OF THE ROTOFLEXI ELASTIC COUPLING
The ROTOFLEXI flexible coupling is an accessory of the ROTOMEC ALFA cou-
plings and it is anchored on the external coupling side for keying it on the reduc-
tion gear. To install it correctly, please observe the following steps:
4.3.1
Disassemble the hub and the rubber element of the ROTOFLEXI flexible
coupling.
4.3.2
Fit the hydromechanic coupling or reduction gear.
4.3.3
Fit the hub of the flexible coupling on the motor shaft.
4.3.4
Alligne driving a driven shaft. Now the machine and the motor may be secured
definitively, providing for a space (B) between the hub and the flange fixing
face, which must be equal or wider than the thickness of the rubber element as
reported in the tables.
NOTE
Coaxiality is guaranteed, when it is possible to fix the hub to the hydrome-
chanic coupling flange with the screws.
4.3.1
4.3.2
4.3.4
4.3.3
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4.2.8a
4.2.8b
ALFA COUPLINGS
BETA COUPLINGS
BETA X
BETA H
BETA J
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