www.sitspa.com
TRASCO
®
- User and Maintenance Manual
114.02 - Rev. 2 - 2
nd
March 2020
Approved by: SIT S.p.A.
17
2.3 Coupling misalignments
3 Storage
shows the misalignment values based on the different coupling sizes that can accomodated.
In order to guarantee a long life of the coupling, it is necessary to pay close attention to the alignment.
The couplings must be stored in covered and dry places.
It is important that the storage areas are protected against light sources, ultraviolet lamps, mercury vapour and high electrical voltage
sources.
The moisture percentage must be maintained below 65%.
In good storage conditions the characteristics of the spiders can remain unchanged for up to 6 years.
Axial misalignment
Axial misalignment
Axial misalignment
Figure 2-9 - TRASCO
®
: misalignments
SIZE
Axial mis. ΔKa
[mm]
Angular mis. ΔKw
[°]
Radial mis. ΔKr
[mm]
19/24
1,2
1°30’
0,20
24/32
1,4
1°30’
0,22
28/38
1,5
1°30’
0,25
38/45
1,8
1°30’
0,28
42/55
2,0
1°30’
0,32
48/60
2,1
1°30’
0,36
55/70
2,2
1°30’
0,38
65/75
2,6
1°30’
0,42
75/90
3,0
1°30’
0,48
90/100
3,4
1°30’
0,50
100/110
3,8
1°30’
0,52
110/125
4,2
1°30’
0,55
125/145
4,6
1°30’
0,60
140/160
5,0
1°30’
0,62
160/185
5,7
1°30’
0,64
180/200
6,4
1°30’
0,68
Table 2.11 - TRASCO
®
: misalignments
Note: Values valid in room temperature conditions of 20 °C and for speeds up to 1500 rpm. For other conditions, contact our Technical Department.
PRECAUTION!
In case of use in potentially explosive areas of group II with II 2GD and
Group I M2 marking, only half of the above indicated misalignments is
allowed. If these values are not complied with, the coupling is considered
as deliberately damaged.
