Siemens SIMOTICS GP Compact Operating Instructions page 107

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