5.1.3 - Shaft mounting
Mount the torque
arm
with bolts
of
at least class 8.8 tightened to a torque of 70% of their failure stress. Clean
and
degrease both the internal coupling surface of the gear unit shaft
and
the external coupling surface of
the machine's driven shaft.
Mount the shrink disk to the gear unit's shaft atter lightly lubricating its entire
outer surface. Snug down a
first set of 3 bolts located at the corners of
an
equilateral triangle (for example: bolts
in
pos. 1-5-9
of
the dia-
gram below). Fit the gear unit to the driven shaft.
Tighten down the bolts (foliowing the triangular pattern)
in
a circular direction, repeating the operation seve-
ral
times until
all
bolts are tightened to the torque specified in chart
2,
in
accordance with the type of
disk/gear unit.
N.B.: Do not tighten down diametrically opposed bolts
in
sequence.
300
...
321
Rt516
µm
~[ ~l
I I J
R;,
600 N/mm
2
:
Do
not
use molybdenum bisulphide
or
any
other
grease, which could reduce the friction
of
the mating surfaces and affect the performance
of
the shrink disk.
300
...
321
Shrink
disk
mounting bolts
Bolt
M6 M6
MS MS MS
M10
M10
M16
M16
M16
M16 M20 M20 M20
M20 M20 M20 M24
Quantity s
10 12 12 12 9 12 s
s
10 10 12
12
15
1S
21
24
21
Class
10.9 10.9 10.9 10.9 10.9 10.9 10.9 10.9 10.9 10.9 10.9 10.9
10.9
10.9
10.9
10.9
10.9 10.9
Tightening
12
12
30 30 30
5S
5S
250
250 250 250 490 490 490
490 490 490
S40
torque
Nm
1S
@ Bonfiglioli
Trosmitol
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