D
G1
ISO 4762
d
1
d
2
I
L
±2
K
H
C
1
D
1
L
d
1
;d
2
min-max
d
1k
;d
2k
min-max
C
1
D
1
H I K
mm mm mm mm mm mm mm mm
18 63 8 - 26 8 - 26 19,2 45 48 6 18
30 65 10 - 30 10 - 30 24,1 55 56 8 20
60 78 12 - 35 12 - 35 28,6 64 67 10 24
80 90 14 - 42 14 - 42 32,4 80 84 12 28
150 90 14 - 42 14 - 42 32,4 80 84 12 28
200 99 22 - 46 22 - 46 36,9 90 93 13 31
300 104 24 - 60 24 - 60 36,9 110 110 13 39
500 111 35 - 64 35 - 64 40,4 119 122 15 43
T n
max
C
r
C
a
C
Tdyn
ΔK
a
ΔK
w
ΔK
r
J D
G1
T
A1
Gw
Nm 1/min N/mm N/mm 10
3
Nm/rad mm mm 10
-3
kgm
2
mm Nm kg
18 22 12700 200 50 8 0,5 1,5 0,2 0,05 1 x M5 6 0,133
30 36 10200 720 50 35 0,4 1,0 0,1 0,11 1 x M6 12 0,245
60 75 8600 1100 90 75 0,4 1,0 0,1 0,29 1 x M8 30 0,406
80 95 6800 1200 80 130 0,4 1,0 0,2 0,87 1 x M10 60 0,742
150 180 6800 2000 150 150 0,4 1,0 0,2 0,87 1 x M10 85 0,742
200 240 6300 2500 150 170 0,4 1,0 0,2 1,44 1 x M12 100 1,054
300 360 5900 6300 280 500 0,4 1,0 0,2 3,00 1 x M12 120 1,434
500 600 4900 8800 100 680 0,5 1,0 0,2 4,70 1 x M14 190 1,949
Tech Paper
Partner for Performance
EN
08.2019
www.ringfeder.com
1
Sectional view
Metal Bellows Couplings
RINGFEDER
®
GWB AKN
Metal bellows coupling with
clamping hubs, short length and higher torsional stiffness
Transmission of the couplings transmissible torque T can not longer be guaranteed for
certain with borings < dmin. Types with borings < dmin, however, can be supplied.
Moment of inertia and weight (mass) are calculated with reference to the largest bore
size.
To continue see next page
degree
Size
Size
Tech Paper
Partner for Performance
EN
08.2019
www.ringfeder.com
2
Disclaimer of liability
All technical details and notes are non-binding and cannot be used as a basis for legal claims. The user is obligated
to determine whether the represented products meet his requirements. We reserve the right carry out modifications
at any time in the interests of technical progress.
Metal Bellows Couplings RINGFEDER
®
GWB AKN
Transmissible torque T [Nm]
L = Total length
d
1
;d
2min
= Min. bore diameter d
1
/d
2
d
1
;d
2max
= Max. bore diameter d
1
/d
2
d
1k
;d
2kmin
= Min. bore diameter d
1
/d
2
with keyway
acc. to DIN 6885-1
d
1k
;d
2kmax
= Max. bore diameter d
1
/d
2
with
keyway acc. to DIN 6885-1
C
1
= Guided length in hub bore
D
1
= Outer diameter
H = Clearance diameter
I = Distance between center screw hole and
hub end
K = Distance shaft axis - clamping screw axis
T = Transmissible torque at given T
A
n
max
= Max. rotation speed
C
r
= Radial spring stiffness
C
a
= Axial spring stiffness
C
Tdyn
= Dynamic torsional stiffness
ΔK
a
= Max. permissible axial misalignment
ΔK
w
= Max. permissible angular misalignment
ΔK
r
= Max. permissible radial misalignment
J = Total moment of inertia
n
Sc1
= Quantity of screws D
G1
D
G1
= Thread
T
A1
= Tightened torque of clamping screw
D
G1
Gw = Weight
Series/Size Bore diameter d
1
Bore diameter d
2
Further details
AKN 150 30 35 *
More information about
RINGFEDER
®
GWB AKN
on www.ringfeder.com
Explanation
Ordering example
Size Ø8 Ø9 Ø10 Ø11 Ø12 Ø13 Ø15 Ø16 Ø18 Ø20 Ø22 Ø25 Ø28 Ø30 Ø35 Ø40 Ø45 Ø50 Ø55 Ø60 Ø64
18 18 20 22 22 22 22 22 22 22 22 22 22 --- --- --- --- --- --- --- --- ---
30 --- --- 36 36 36 36 36 36 36 36 36 36 36 36 --- --- --- --- --- --- ---
60 --- --- --- --- 75 75 75 75 75 75 75 75 75 75 75 --- --- --- --- --- ---
80 --- --- --- --- --- --- ,95 95 95 95 95 95 95 95 95 95 --- --- --- --- ---
150 --- --- --- --- --- --- 180 180 180 180 180 180 180 180 180 180 --- --- --- --- ---
200 --- --- --- --- --- --- --- --- --- --- 240 240 240 240 240 240 240 --- --- --- ---
300 --- --- --- --- --- --- --- --- --- --- --- 360 360 360 360 360 360 360 360 360 ---
500 --- --- --- --- --- --- --- --- --- --- --- --- --- --- 600 600 600 600 600 600 600
* Keyway or stainless steel