Torque limiter: technical notes
1
2
3
4
5
6
7
8
9
10
LOCK NUT
SPACER
FLANGE
FLANGE
FLANGE
ROLLER
DOWEL PIN
SPRING
ORING
ORING
11
12
13
14
15
16
17
18
19
20
ORING
BEARING
BEARING
BEARING
RING
DOWEL PIN
GRAIN
PAD
BEARING DISC
BEARING DISC
Used springs types:
SPRING DI13550-DIM (circular section – black) for IT 55
SRPING COD. 094 26X76 VICTORIA (square section – brown) for ITV
2
Torque limiter opening.
1
Release lock nut (1) by a proper
tool. During this operation,
springs (8) are pushing/lifting the
flange (5), which is drived by the
dowel pins (7).
5
8
Remove lock nut (1), bearing (13)
bearing disc (19) and the
flange (5).
4
7
13
1
19
5
Opening operation of the torque limiter must be provided by expert and trained people
only.
3
Calibration.
Coupling calibration it depends from number and type of selected springs.
The insertion position is not the main issue, but it is important their uniformity around 360° in order
to maintain the flanges parallelism(4) and (5).
The diagram shows calibration values based on type and number of springs.
4
Calibration
300
Square section
color brown
Calibration couple (daNm)
250
Square section
color yellow
200
150
Circular section
color black
100
50
0
6
8
10
12
14
16
18
20
number of springs
5