33
ROSSI
GEARMOTORS
UT.D 123 rev. 3
11b. Table of tightening torques for axial fastening bolts and shrink disc
2)
Worm gear
32 40 50 — 63, — 80, 100 125, 160 161 — 200 — 250 — — — — — — — —
—
reducer size
64
,
81
,
126
,
Parallel and right
40 50 — 63 64 80 81 100 125 140 — 160 180 200 225 250 280 320, 360 400, 450, 500, 560, 630,
angle
shaft size
321
,
401
,
451
,
501
,
561
,
631
,
M
[daN m]
for rings or bush
2,9 3,5 4,3 4,3 4,3 5,1 5,3 9,2 17 21 21 34 43 66 83 135 166 257 315 — — — —
—
Bolts for axial fastening
UNI 5737-88
M8
1)
M8
1)
M10
1)
M10 M10 M10 M10 M12 M14 M16 M16 M20 M20 M24 M24 M30 M30 M36 M36 M30 M30 M36 M36 M36
class 10.9
M
[daN m]
for shrink disc
— 0,4 — 1,2 1,2 1,2 — 3
,0
3 3 — 6 6 10 10 25 25 25 25 49 49 49 49
84
Bolts for shrink disc
UNI 5737-88
— M5 — M6 M6 M6 — M8 M8 M8 — M10 M10 M12 M12 M16 M16 M16 M16 M20 M20 M20 M20 M24
class 10.9
1) For worm gear reducers UNI 5931-84.
2) The bolts of shrink disc must be gradually and uniformly tightened, with continuous sequence (not diagonally!) and in several phases up to the reaching of maximum tightening torque.
10. Painting table
Degree of preparation of surfaces: sandblasting Sa 2 1/2
Colour Blue RAL 5010
Series
Size
Internal painting
External painting
Notes
(final colour always
blue RAL 5010)
Specifications
Worm
32 ... 81
Parallel and
right angle
40 ... 81
Epoxy powder
(prepainted)
Dual-compound
epoxy primer
(prepainted)
Water-soluble
single-compound
alkyd basis primer
(prepainted)
Epoxy powder
(prepainted)
Total thickness
40
m
Dual-compound
epoxy primer
(prepainted)
+
Water-soluble paint
Total thickness
80
m
Resistant to atmospheric
and aggressive agents.
Suitable for further painting
only after degreasing and
sanding.
Good resistance to atmo-
spheric and aggressive
agents.
Not resistant to solvents.
Suitable for further coats of
single-compound synthetic
paints (normally also dual.
compound).
Machined parts remain
unpainted; they are protec-
ted with an easily removable
antirust oil (before painting
remove the protective oil).
Machined parts painted with
water-soluble paint.
Thickness
40
m
Water-soluble single
compound
alkyd basis primer
(prepainted)
+
Water-soluble enamel
Total thickness
80
m
Worm
100 ... 250
Coaxial
50 ... 81
Parallel and
right angle 100 ... 631
Coaxial
100 ... 180
11a. Table of tightening torques fastening bolts
(foot and flange)
M
(daN m)
Bolt
UNI 5737-88
class 8.8
class 10.9
M5
0
00
0,6
000
0,85
M6
0
00
1,1
000
1,5
0
M8
0
00
2,5
000
3,5
5
M10
00
5
,6
000
7,1
5
M12
00
8,5
00
12
,85
M14
0
13,5
00
19
,85
M16
0
20,5
00
29
,85
M18
0
28
,5
00
40
,8
M20
0
40
,5
56
M22
0
55
,5
00
77
,00
M24
0
71
,5
0
100
,00
M27
100
,5
0
140
,00
M30
138
,5
0
195
,00
M33
200
,5
0
280
,00
M36
250
,5
0
355
,00
M39
295
,5
0
420
,00
M42
410
,5
0
580
,00
M45
500
,5
0
710
,00
M48
610
,5
0
860
,00
M56
980
,5
1380
Note
- Class 8.8 is usually sufficient.
- Before tightening the bolt be sure that the eventual centering of flanges are inserted properly
- The bolts are to be diagonally tightened with the maximum tightening torque.