www.sitspa.com
TRASCO
®
- User and Maintenance Manual
114.02 - Rev. 2 - 2
nd
March 2020
Approved by: SIT S.p.A.
10
2.1.4 GRS series hubs
The GRS series hubs are intermediate elements that increase the ability of the coupling to compensate for axial, radial and angular
misalignments.
The presence of two elastic spiders allows a high damping effect of the vibrations, with consequent reduction of the transmission noise
and a reduced wear of the connected components, such as bearings.
Figure 2-3 - TRASCO
®
GRS series
Table 2.6 - TRASCO
®
GRS Dimensions
SIZE
Fa
Fb
H
V
C
M
S
N
L
E
A
B
G
ΔKr
ΔKw
24/32
9 - 24
11 - 32
30
16
52
18
2
14
112
55
40
55
27
0,89
1°30’
28/38
9 - 28
11 - 38
35
18
58
20
2,5
15
128
65
48
65
30
1
1°30’
38/45
11 - 38
13 - 45
45
20
68
24
3
18
158
80
66
80
38
1,15
1°30’
42/55
11 - 42
13 - 55
50
22
74
26
3
20
174
95
75
95
46
1,26
1°30’
48/60
13 - 48
13 - 60
56
24
80
28
3,5
21
192
105
85
105
51
1,36
1°30’
55/70
16 - 55
16 - 70
65
28
88
30
4
22
218
120
98
120
60
1,52
1°30’
65/75
16 - 65
16 - 75
75
32
102
35
4,5
26
252
135
115
135
68
1,75
1°30’
75/90
16 - 75
16 - 90
85
36
116
40
5
30
286
160
135
160
80
2
1°30’
90/100
21 - 90
21 - 100
100
40
130
45
5,5
34
330
200
160
180
100
2,5
1°30’
Ø
Fa
S S
M
V
M
Ø
Fb
Ø
G
L
Ø
A
Ø
E
S
N
N
S
I
I
H
C
H
Ø
B
GRS
GRMP...B
GRMP...A
AR
AR
* measures in mm
