COMINTEC
14
β
=
180
•
C
mot
π
•
R
TOT
R
TOT
=
1
+
2
R
T
s
L
t
R
T
rel
(
)
K = [ L
tot
-
(2
•
N) - P ]
•
Tg
α
α
α
α
K
α
K
α
α
α
2
α
α
2
α
α
x
x
Δ
x
TOT
=2x
x
x
2x
GTR/DBSE - torsionally rigid coupling with spacer: addi
Ɵ
onal informa
Ɵ
on
It is also possible to determine the
posi
Ɵ
oning error through the torsion
angle according to the formula:
The total torsional rigidity of the GTR/
DBSE coupling is expressed by the
formula:
The maximum speed of the coupling is in
fl
uenced by several factors:
• Peripheral speed of the coupling;
• Weight of the coupling;
• Length of the spacer;
• Rigidity of the coupling;
• Quality of balance.
In general, for most applica
Ɵ
ons that require the GTR/DBSE model,
dynamic balancing is NOT required. In other cases there need to
evaluate in reference to the graphic 4 in func
Ɵ
on of the speed and the
length of the extension custom.
Where:
β
= Torsion angle
[ ° ]
C
mot
= Max torque motor side
[Nm]
R
TOT
= Total torsional rigidity of coupling
[Nm/rad]
Dove:
R
TOT
= Total torsional rigidity of coupling GTR/DBSE
[Nm/rad]
R
T
s
= Torsional rigidity of coupling GTR/S
[Nm/rad]
R
T
rel
= Rela
Ɵ
ve rigidity of spacer
[Nm/rad]
L
t
= Spacer length
(=DBSE-2P)
[m]
Lunghezza dell’allunga
[mm]
Speed
[Rpm]
Balancing not required
Balancing not required
Balancing depend by applica
Ɵ
on
Balancing depend by applica
Ɵ
on
Dynamic balancing required
Dynamic balancing required
4. Balancing ra
Ɵ
o in func
Ɵ
on of DBSE (GTR/DBSE)
The model with spacer "GTR/DBSE", in
addi
Ɵ
on to being essen
Ɵ
al for connec
Ɵ
ng
elements of transmissions situated apart ,
it is able (unlike the classic model GTR/S) to
recover, as needed, up to twice the angular
misalignment (
fi
gure 2) and axial (
fi
gure 3) or
a high radial misalignment (
fi
gure 1) according
to the formula:
Where:
K
= Radial misalignment
[mm]
L
tot
= Total length GTR/DBSE coupling
[mm]
N
= Useful length of an half-hub
[mm]
P
= Useful part of elastic element
[mm]
α
= Angular misalignment GTR/S
[ ° ]
1. Radial misalignment
2. Angular misalignment
3. Axial misalignment
0
500
1000
1500
2000
2500
3000
3000
2500
2000
1500
1000
500
0