CHIARAVALLI
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FRICTION
TORQUE LIMITERS
CHOICE OF THE TORQUE LIMITER:
Tkw = Power in kW
n = revolutions per minut
Mt = torque (Nm)
The torque is given by the relation:
Mt
=
9550 • Tkw
n
Example:
To use an electrical motor with the following features:
Power 4 kW e n = 1.550 g/1’
Mt
=
9550 • 4
= 24.64 Nm
1550
So we will choose a limiter with a torque equal
to or higher than 24,64 Nm
Scheme of the Belleville springs DIN 2093
LC
TORQUE
100% Nm
50
0
RISE mm
Δ F
Δ M
TORQUE
100% Nm
50
0
FLEXION mm
Δ M
Δ F
LC
1 spring
2
springs
49
12
