ComInTec Coupling catalogue English

ComInTec Coupling catalogue English
ELASTOMERIC COUPLINGS - RIGID COUPLINGS
(backlash free)
ELASTOMERIC COUPLINGS - RIGID COUPLINGS (BACKLASH FREE): introduction
The aim of the flexible coupling is to transfer motion between two shafts on the same axis whilst accounting for possible misalignments.
We have various styles of flexible couplings suitable for a wide range of applications.
The quality of the materials used, the careful design and the precision in manufacturing ensure long lasting high performance, safety and
reliability for even the most complex applications.
Strengths of our Models ...
Available in fully turned steel.
Good reliability.
Different customization possibilities.
Wide selection.
Highly accurate manufacturing.
Optimum protection against environmental conditions.
Competitive pricing without sacrificing quality.
"Made in Italy" with certified quality.
Our main product ranges ...
“RIGID COUPLINGS (BACKLASH FREE)”: for connections when high precision and high transmission torques are required.
“ELASTOMERIC COUPLINGS”: for connection between misaligned shafts with the need to absorb vibrations.
BELLOW COUPLING "GSF"
Bellow coupling in aluminium with high
torsional rigidity.
Backlash free, low inertia and high
reliability.
Max. torque 30000 Nm – max. bore ø 140 mm.
Max. torque 450 Nm – max. bore ø 50 mm.
Max. torque 300 Nm – max. bore ø 45 mm.
BACKLASH FREE JAW COUPLING "GAS/SG"
12
Rigid coupling, in steel, suitable for shaft
connections with good alignment.
6
Torsionally rigid disc coupling with angular
backlash free transfer of motion.
Transmission and maximum flexibility in
operation.
JAW COUPLING "GAS"
COMPACT ELASTIC COUPLING "GEC"
Max. torque 2080 Nm – max. bore ø 80 mm.
Max. torque 9000 Nm – max. bore ø 110 mm.
Max. torque 35000 Nm – max. bore ø 180 mm.
Gear coupling without wear due to the
polyamide sleeve, suitable for high axial
misalignments.
Max. torque 5000 Nm – max. bore ø 125 mm.
CHAIN COUPLING "GC"
Highly flexible coupling with compact
dimensions, suited for applications where high
shaft misalignments are present. Maintenance
without the need to move the shafts.
Max. torque 5100 Nm – max. bore ø 85 mm.
Simple, economic and easy to assemble
chain coupling. Suitable for dry and dusty
environments.
Max. torque 8000 Nm – max. bore ø 110 mm.
32
HIGHLY FLEXIBLE COUPLING "GF"
30
GEAR COUPLING "GD"
26
Elastomeric coupling, compact and
protected from environmental conditions.
Fast maintenance possible without the
need to move the shafts.
20
Elastomeric jaw coupling, good vibration
dampening properties. Available with a
range of elastomeric elements depending
on the application requirements.
16
Backlash free jaw coupling.
Available with a range of hub connections
and elastomeric elements.
28
2
RIGID COUPLING "GRI"
14
DISC COUPLING "GTR"
ELASTOMERIC COUPLINGS - RIGID COUPLINGS (BACKLASH FREE): introduction
GC
page 32
GFI
page 31
GF
page 30
GD
page 28
page 26
GEC
page 18
GAS
page 16
GAS/SG
page 14
GSF
page 12
page 6
GRI
CHARACTERISTICS
GTR
SELECTION GUIDE
Manufactured in turned steel
Manufactured in aluminium
Elastomeric
Medium torsional rigidity
High torsional rigidity
Completely rigid
Jaw connection
Compact dimensions
Modular system
Reduced inertia
Statically balanced
Electric insulation between parts
Available with customized spacers
Assembly possible with ComInTec TORQUE LIMITERS
ADVANTAGES AND BENEFITS
High transmittable torque
Maintenance free
Economic solution
Suitable for frequent reversal of drive
Suitable for high temperatures (>150°C)
Maintenance possible without the need to move the shafts
Silent transmission
Vibration dampening
Suitable for high speeds
Simple and fast assembly
Conformity to ATEX (on request)
High compensation of misalignments
Average compensation of misalignments
Low compensation of misalignments
APPLICATIONS
CNC and precision machines
Servomotors, linear guides, transducers
Food and chemical sectors
Textile and printing machines
Pumps, compressors, turbines
Conveyor belts
Solar trackers
Tachos, encoders
Packing machines
Extruders, mixers and agitators
Farm machines, earth-moving equipment
Printing, laminating
Test benches
Motion control
3
ELASTOMERIC COUPLINGS - RIGID COUPLINGS (BACKLASH FREE): introduction
APPLICATION EXAMPLES
Locking with screw and washer, useful for
fixing the coupling on the shafts where
threaded hole is available.
Locking with grubscrew on the keyway.
Standard solution on the hubs shown in the
catalogue.
Suitable for horizontal assembling.
Single split clamp hub with or without
keyway. Reduction of angular backlash without
change to the standard dimensions.
Clamp connection with locking assembly built
into the hub (CCE/version), advised on high
speeds and without change to standard
dimensions.
4
Clamp connection with external locking
assembly (shrink disk), suitable to transmit high
torque while maintaining compact axial
dimensions.
Clamp connection with internal locking
assembly. Reduction of angular backlash and
reduced axial dimensions without compromising
the transmittable torque of the coupling.
Clamp connection via a two section hub bored H7 allowing easy extraction.
Extreme ease in assembling, disassembling and maintenance without disconnecting the shafts but simply extracting the coupling radially.
Fully modular, the coupling can be supplied with spacers made to length with surface treatments suitable for even the most aggressive
environments.
ELASTOMERIC COUPLINGS - RIGID COUPLINGS (BACKLASH FREE): introduction
SELECTION OF THE SERVICE FACTOR AND TORQUE CALCULATION
For correct dimensioning of the chosen coupling, it is necessary to determine the correct torque to be transmitted, taking into
consideration the type of application and determining the service factor "f". In the table below, this value is indicated referring to some
common applications. The formula to calculate the torque value is the following:
Dove:
9550 • f • P
Cnom =
n
Cnom = coupling's nominal torque [Nm]
= service factor
f
n = speed [Rpm]
P
= power applied [kW]
If the calculated torque to be transmitted is included between two couplings' sizes, always choose the one that offers the highest torque.
Service factor ( f )
Sector
Machines for
food industries
Machines for
chemical industries
Machines for building industries
Machines for
extraction industries
Machines for rubber
processing industries
Machines for
metalworking industries
Machines for textile industries
Fans
Conveyors
Machines for paper industries
Machines for mining industries
Compressors
Machines for plastic
processing industries
Machines for woodworking
industries
Machines for laminating
industries
Pumps
Cranes
Type of machine
Combustion engines
water turbines
1,5
2,0
3,0
Electric engines
Gas and steam turbines
2,0
2,6
3,5
2,0
2,6
2,0
2,0
3,0
2,0
3,0
1,0
2,0
3,0
2,0
1,5
2,6
2,6
3,5
2,6
3,5
1,5
2,6
3,5
2,6
2,0
2,0
2,6
3,0
3,5
2,0
3,0
2,0
3,0
1,0
2,0
3,0
2,6
3,5
2,6
3,5
1,5
2,6
3,5
Calendars, crushers, mixers
2,0
2,6
Generic woodworking
Planning machines
Bark-peelers, saws
Light roller ways
Cold rolling mills, pipe welders, ingot conveyors
cutting-off machines
Centrifuges
Centrifuges for viscous liquids
Alternative, pressure
Hoisting, translation
Rotating
1,0
2,0
3,0
2,0
1,5
2,6
3,5
2,6
3,0
3,5
1,0
2,0
3,0
1,0
2,0
1,5
2,6
3,5
1,5
2,6
Bottlers
Centrifuges, mixers, crushers
Sugar cane mills
Agitators, mixers, heavy centrifuges,
cooling drums
Elevators, earth-moving machines
Pumps for pipelines
Drilling installations
Calendars
Extruders, mixers, mills and rolls
Gears
Machine tools, shears, bending machines
Presses, punches, straighteners
Printing apparatus, lap machines, pickers, frames
Large-blade centrifuges
Chain, screw, plate conveyors
elevators
Inclined elevators, extraction systems,
belt conveyors
Calendars
Paper pressers, paper rolls
Suction pumps, control winches
Blade wheels, bucket excavators
Axial, centrifugal, radial
Turbocompressors
Alternative
5
GTR – torsionally rigid coupling: introduction
Made in steel fully turned with standard treatment of phosphating.
Disc pack in stainless steel.
High torsional rigidity.
Maintenance and wear free.
Version with double disc pack and spacer made to length.
High torque possible.
ON REQUEST
Use in applications with high operation temperatures (> 150 °C) possible.
Specific treatments or version in full stainless steel possible.
Customized versions for specific needs.
Connection to ComInTec TORQUE LIMITERS range possible.
Designed to suit applications where high reliability, precision and an optimum weight/power ratio is required; ideally suited for applications
with high speeds and power, also offering low overhung loads when using spacer version.
This coupling is composed of three main items: the two fully turned hubs, made in steel UNI EN10083/98 and the disc pack, in stainless
steel AISI 304 C with connection screws in steel class 10.9. In the “double” version, GTR/D, there is also a spacer made to length, also built
in steel UNI EN10083/98, fixed between the hubs and the two disc packs.
All the components of GTR couplings, except the spacer, are made and balanced into class DIN ISO 1940-1:2003 Q 6.3, before the machining
of the keyway.
In accordance to the specific need of the application, it is possible to make static or dynamic balancing on each separate component or on
the coupling, fully assembled to customer requirements.
DESCRIPTION OF DISCS
6
The fundamental elements of this torsionally rigid coupling are the disc packs, built from a series of stainless steel discs type AISI 304-C,
connected by steel bushes. This disc pack is connected in an alternate way to the hub flange or the eventual spacer, by using screws in steel
class 10.9 and the relevant self-locking nuts.
With reference to the configuration, the disc packs can be:
Unique discs with continuous ring (coupling sizes 1-7)
Disc sections (coupling sizes 8-12)
Continuous ring disc pack
(sizes 1-7)
Sectional disc pack
(sizes 8-12)
Assembly example with internal and external locking bushes
GTR – torsionally rigid coupling: introduction
MANUFACTURING
Version with spacer supplied, made to length,
according to the application needs.
Manufacturing with internal hubs in order to
reduce the axial dimensions.
Manufacturing in addition to the /SG torque
limiters range, with simple and/or double disc
pack.
7
Solution with adaptors both in simple and
double version, for easy substitution of disc
packs without moving the hubs (in accordance
with directive API610).
Solution for vertical mounting, where the spacer
has to be supported to avoid the weight preloading the disc pack.
GTR – torsionally rigid coupling: technical data
GTR-S
GTR-D
DIMENSIONS
8
Size
GTR-S code
GTR-D code
A
D
0
1
2
3
4
5
6
7
8
9
10
11
12
200965000000
200825000000
200835000000
200845000000
200855000000
200865000000
200875000000
200885000000
200895000000
200925000000
200935000000
200945000000
200955000000
200819000000
200829000000
200839000000
200849000000
200859000000
200869000000
200879000000
200889000000
200899000000
200929000000
200939000000
200949000000
200959000000
78
80
92
112
136
162
182
206
226
252
296
318
320
45
45
53
64
76
92
112
130
135
155
170
195
200
E H7
max
32
32
38
45
52
65
80
90
95
110
120
138
140
E4 H7
max
25
25
30
35
45
55
70
80
80
-
N
P
29
36
42
46
56
66
80
92
100
110
120
140
150
7,5
8
8
10
12
13
14
15
22
25
28
32
32
Q Std
*
50
50
50
59
75
95
102
101
136
130
144
136
156
R
R1
U
V
65,5
80
92
102
124
145
174
199
222
245
268
312
332
123
138
150
171
211
253
290
315
380
400
440
480
520
10
10
10
15
15
20
20
20
20
25
25
30
30
M5
M5
M5
M8
M8
M8
M8
M10
M10
M12
M12
M16
M16
Clamp locking (on request)
TORQUE PERMISSIBLE WITH CLAMP LOCKING (GTR-S & GTR-D)
Size
0
1
2
3
4
5
6
7
8
10 11 12 14
18 19 19 20
18 19 19 20
41 42
15
20
20
43
16
21
21
44
18
22
22
45
90
19
22
22
45
91
20
22
22
46
92
95
Torque transmitted [Nm] relevant to the ø finished bore [mm]
22 24 25 28 30 32 35 38 40 42 45 48 50 55 60 65 70 75 80
23 24 25
23 24 25
47 49 49 51 53
95 97 98 102 104 107 110
97 99 101 104 106 108 111 115 117 119 123
260 267 272 276 284 291 296 301 308 316 321 333
494 501 508 519 530 537 555 573 591 609
539 549 560 567 585 603 621 639 657 676
1097 1117 1131 1166 1201 1236 1271 1306 1342
GTR – torsionally rigid coupling: technical data
GTR-S TECHNICAL CHARACTERISTICS
Size
0
1
2
3
4
5
6
7
8
9
10
11
12
Torque
[Nm]
Nom
Max
60
100
150
300
700
1100
1700
2600
4000
7000
9000
12000
15000
120
200
300
600
1400
2200
3400
5200
8000
14000
18000
24000
30000
Weight
[Kg]
Inertia
[Kgm2]
Max
speed
[Rpm]
Axial
load
[Kg]
Tightening
torque disc pack
screws
[Nm]
1,6
1,3
2,4
3,9
6,3
10,4
15,6
24,8
33,0
42,0
67,0
94,0
114,0
0,00058
0,00067
0,00193
0,00386
0,00869
0,01009
0,03648
0,07735
0,13403
0,25445
0,45019
0,71654
1,06933
27500
25000
22000
20000
16000
14000
12000
10000
8000
7500
6000
5500
5500
10
14
19
26
34
53
70
79
104
115
138
279
358
12
12
13
22
39
85
95
127
260
480
760
780
800
Misalignment
angular
a [°]
1°
0° 45'
0° 45'
0° 45'
0° 45'
0° 45'
0° 45'
0° 45'
0° 45'
0° 45'
0° 45'
0° 45'
0° 45'
axial
X [mm]
1,40
0,80
0,95
1,25
1,45
1,65
2,00
2,25
2,45
2,55
2,65
2,95
3,05
radial
K [mm]
-
Rigidity
3
[Nm/rad•10 ]
80
117
156
415
970
1846
2242
3511
8991
11941
14154
15521
16409
GTR-D TECHNICAL CHARACTERISTICS
Size
0
1
2
3
4
5
6
7
8
9
10
11
12
Torque
[Nm]
Weight Inertia
Nom
Max
[Kg]
[Kgm2]
Max
speed
[Rpm]
60
100
150
300
700
1100
1700
2600
4000
7000
9000
12000
15000
120
200
300
600
1400
2200
3400
5200
8000
14000
18000
24000
30000
1,7
1,8
3,5
5,8
9,4
15,2
23
34
47
61
96
132
166
0,00083
0,00092
0,00286
0,00740
0,01660
0,02850
0,06358
0,12816
0,22927
0,44598
0,79995
1,22823
1,85186
25000
25000
22000
20000
16000
14000
12000
10000
8000
7500
6000
5500
5500
Axial
load
[Kg]
12
14
19
26
34
53
70
79
104
115
138
279
358
Tightening
torque disc pack
screws
[Nm]
12
13
13
22
39
85
95
127
260
480
760
780
800
Misalignments
angular
a [°]
1° 30'
1° 30'
1° 30'
1° 30'
1° 30'
1° 30'
1° 30'
1° 30'
1° 30'
1° 30'
1° 30'
1° 30'
1° 30'
axial
X [mm]
1,40
1,60
1,90
2,50
2,90
3,30
4,00
4,50
4,90
5,10
5,30
5,90
6,10
Rigidity
radial
K [mm]
0,70
0,79
0,79
0,95
1,18
1,45
1,56
1,57
2,16
2,16
2,40
2,40
2,64
RT [Nm/rad•103]
42
51
71
184
422
803
1019
1596
3996
5192
6024
6748
7293
NOTES
Ä
Ä
Ä
Ä
Code: the 7th, 8th, 9th digits of the code indicate the finished bore diameter of a half-hub in mm (000 = Pilot Bore).
Code: the 10th, 11th, 12th digits of the code indicate the finished bore diameter of the second half-hub in mm (000 = Pilot Bore).
Q std (*): different dimensions available on request.
Technical characteristics: the weights refer to the coupling with pilot bore; inertias refer to the coupling with maximum bore.
9
GTR – torsionally rigid coupling: additional information
DIMENSIONING
For pre-selection of the coupling's size you can use the generic formula indicated on page 5.
The GTR coupling will accomodate momentary peak torque "C.C." of 2,5 times than nominal torque.
If the C.C. is higher than 2,5 times than the nominal torque, it is necessary to choose the coupling using the following formula:
C.C.
2,5
C'nom =
Where:
C'nom = theoretic nominal torque of the coupling [Nm]
Cnom = effective nominal torque of the coupling [Nm]
C.C. = peak torque [Nm]
Cnom ³ C'nom
The nominal torque indicated on the catalogue for GTR coupling refers to the static torque 2 times lower than the nominal torque, with
service factor f=1.5. On the contrary, if the static torque of the motor is two times higer then the nominal one, it is possible using the
following formula:
C'nom =
Cspunto
1,5
Where:
C'nom = theoretic nominal torque of the coupling [Nm]
Cnom = effective nominal torque of the coupling [Nm]
Cspunto = static torque [Nm]
Cnom ³ C'nom
Having calculated the theoretical nominal torque (C'nom), so that the coupling can be sized correctly it is necessary, to compare the
effective technical characteristics of GTR (pages 8-9) and to choose the size able to transmit an effective nominal torque (Cnom) higher or
equal to the one found by the described formulae above.
Having established the size of the coupling to be used, it is possible to make other checks considering further parameters:
Where:
Cnom >
Cnom >
9550 • P
n
•
Cnom = nominal torque of the coupling [Nm]
= service factor (pag.5)
f
fT = thermic factor (grafico 1)
f • f T • fD
9550 • P • • •
f K f T fD
n
fD
= direction factor
fK
= load factor
n
= speed [Rpm]
P
= applied power [kW]
It is important to consider that misalignments, axial, angular and parallel, must be considered paired together, as inversely proportional (one
reduces when the other increases). If all types of misalignments occur, it is necessary that the sum in percentage with respect to the maximum
value doesn't exceed 100%, according to “graphic 2”.
graphic 1
Direction factor (fD)
1
one-sense rotation
1,2
alternate rotation
ta
20
35
40
60
80
Axial misalignment X [%]
Where:
180 • Cmot
π • RT
]
0
Moreover it is also possible to determine positioning error in accordance to the formula:
β=
[%
250
en
100
150
200
Operating temperature [°C]
nm
0
50
ig
al
is
20
75
Radial misalignment K [%]
rm
la
gu
40
50
1,00
25
1,05
60
0
1,10
80
An
1,20
1,15
Load factor (fK)
1,5
continuous load
2
discontinuous load
1,5÷2
machine tools
2,5 ÷ 4
shock load
graphic 2
100
1,25
Thermic factor fT
10
Cmot = maximum torque motor side [Nm]
RT
= torsional rigidity of the coupling [Nm/rad]
β
= rotation angle [ ° ]
100
GTR – torsionally rigid coupling: additional information
FITTING
1) Achieve radial and axial alignment as precisely as possible to permit the maximum absorption of possible misalignments and life of the
coupling (picture 1 and 2).
2) Make sure that the shafts are assembled so that its extremity is square with the surface of the half-coupling (the length of the spacer
including two disc packs should be equal to the distance between the two shafts) (picture 3).
3) Tightening the screws with a torque wrench in a cross sequence, continuously until you obtain the tightening torque indicated in the
catalogue. It is recommended to rotate only the nut/bolt not in contact with the disk pack to prevent twisting of the laminations.
4) Finally it is necessary to check and ensure the disc packs are perfectly perpendicular to the shaft axis. It may be necessary to release and
tighten some screws again.
Axial thrust (%)
100
75
50
25
25
0
50
75 100
Axial misalignments (%)
picture 1
picture 2
graphic 3
The rated outputs on the catalogue refer to normal use without shocks and with shafts well-aligned with the environmental temperature
-20 °C + 250 °C (pictures 1 and 2).
With the coupling GTR-D (double flexing version) with spacer it is possible to achieve double the angular misalignment (picture 5) compared
to the single flexing version. Otherwise it's possible to accept radial misalignment (pictures 4).
The value of axial thrust (+- 20%) is relevant to the axial movement according to "graphic 3".
a
K
a
K
a
a
picture 4
DBSE
a
2a
a
a
a
2a
a
picture 5
picture 3
In the coupling with spacer, the central part of the couplings (spacing bar) can be considered as a weight suspended between two springs
(lamellar pack), and it will have a natural frequency which, if excited, can produce some oscillations of the spacer causing damage to packs.
It is recommended to increase the distance between the flanges of the hubs compared to the nominal dimentions “DBSE” (see picture 3) by
1,5 – 2 mm to decrease the natural axial frequency. In this way the lamellar packs are kept under tension and the possibility of spacer
oscillation reduces.
11
5
GRI - rigid coupling: introduction
Made in steel fully turned with phosphating treatment.
Extremely rigid connection.
High torque possible.
Wear and maintenance free.
Compact dimensions.
Finished bore with ISO H8 tolerance and low roughness.
ON REQUEST
Finished bore with keyway.
Different customized bores.
Two section design.
Anti-corrosive surface treatments for specific needs possible.
GRI rigid couplings have been designed and manufactured to connect two shafts of the same diameter but without allowing any relevant
misalignment.
The coupling is manufactured in one element for the single split version. A two piece unit is available on request allowing simple and fast
mounting and dismounting.
DIMENSIONING
The nominal torque of the coupling must be higher than the maximum torque of the motor's side, according to the generic formula on page 5.
The indicated torque values have been calculated based on a friction coefficient for shaft-coupling of 0.15 μm.
12
FITTING
It is advised to machine the connection's shafts with:
Surface finish with Ra=1.6 μm.
Nominal tolerance h6.
Be sure that the shafts are perfectly aligned.
Tighten the locking screws in steel class 8.8 with a torque wrench, in accordance to the tightening torque indicated in the catalogue.
APPLICATION EXAMPLE
GRI - rigid coupling: technical data
1 section
coupling
2 section
coupling
DIMENSIONS
Size
Code
2 sections coupling
514378200P00
514378400P00
D
Dk
E H8
R
10
15
1 section coupling
514178200P00
514178400P00
32
40
33
-
10
15
45
50
20
25
30
35
40
45
50
514178500P00
514178600P00
514178700P00
514178800P00
514178900P00
514179000P00
514179100P00
514378500P00
514378600P00
514378700P00
514378800P00
514378900P00
514379000P00
514379100P00
45
50
55
65
70
80
90
47
52
57
70
74
83
95
20
25
30
35
40
45
50
65
70
75
85
90
100
110
TECHNICAL CHARACTERISTICS
Size
Torque
[Nm]
Weight
[Kg]
Inertia
[Kgm2]
Max
speed
[Rpm]
Screws
Tightening
torque screws
[Nm]
10
15
20
25
30
35
40
45
50
18
40
70
85
95
205
225
250
450
0,25
0,42
0,65
0,87
1,11
1,75
2,13
2,96
4,31
0,000028
0,000080
0,000172
0,000305
0,000503
0,001098
0,001615
0,002896
0,005284
5500
4200
3800
3500
3200
2700
2500
2200
1900
n°4 x M4
n°4 x M5
n°4 x M6
n°4 x M6
n°4 x M6
n°4 x M8
n°4 x M8
n°4 x M8
n°4 x M10
3,1
6,2
10,5
10,5
10,5
25
25
25
50
13
GSF - bellow coupling: introduction
Hubs made in aluminum fully turned and bellow in stainless steel.
Suitable for applications with high temperatures (> 300 °C).
High torsional rigidity and low inertia.
Wear and maintenance free.
Backlash free for precision and high speeds.
Finished bore with ISO H8 tolerance and low roughness.
ON REQUEST
Finished bore with keyway.
Connection to the ComInTec backlash free torque limiter's range possible.
Customized manufacturing for specific requirements.
The GSF bellow couplings have been designed and manufactured for all applications requiring excellent dynamic characteristics, necessary for
high speeds, fast reversing and, at the same time, torsional rigidity with low inertia without compromising the high reliability.
The coupling is made in three different and modular elements, in order to obtain high flexibility in assembling and availability. The two shafts are
connected to the bellow exploiting a simple mechanic system, easy and safe, by properly sized radial screws and without using bonding agents.
In this way the coupling is able to operate and withstand high temperatures, up to 300 °C.
The coupling allows the compensation of all possible misalignments between the two shafts, to be connected in accordance to the values
indicated in the table, assuring an infinite number of working cycles.
DIMENSIONING
The coupling's nominal torque must be higher than the maximum torque of the motor shaft, according to the generic formula on page 5.
For further checks it is useful to verify: inertia on acceleration / deceleration, incorrect positioning in case of application when high precision is
required, the natural frequency of the application (simplified system with two masses) according to formulas:
Where:
14
Cnom > Cad • K •
β=
Juti
Jmot + Juti
180 • Cmot
π • RT
Cnom = nominal torque of the coupling [Nm]
Cad = max value between acceleration
torque on the motor side and
deceleration torque on the user side [Nm]
Cmot = maximum torque on the motor side [Nm]
fe
= system frequency with two masses [Hz]
Load factor (K)
1,5
continuous load
2
discontinuous load
2÷3
machine tools
2,5 ÷ 4
shock load
fmot = frequency on the motor side [Hz]
2
Jmot = inertia on the motor side [Kgm ]
2
Juti = inertia on the user side [Kgm ]
1
fe= 2π
J +J
RT • Juti • J mot > 2 • fmot
uti mot
K
= load factor
RT
= torsional rigidity of the coupling [Nm/rad]
β
= rotation angle [ ° ]
GSF
User
Servomotor
Jmot
RT
Juti
Simplified system with two masses
FITTING
It is advised to machine the connection's shafts with:
Surface finish with Ra=1.6 μm.
Coaxial precision 0.01 mm.
Nominal tolerance h6.
At first, assemble the coupling by inserting the bellow into the relevant hubs and tighten the screws in sequence, respecting a cross
sequence, continuously until you obtain the tightening torque indicated in the catalogue. Insert one hub on the first shaft along the N
length and tighten the clamp locking screw with a torque wrench, respecting the tightening torque indicated on the catalogue. Leave the
second shaft slides on the opposite hub along the whole N length and tighten the clamp locking screw with a torque wrench, respecting the
tightening torque indicated on the catalogue.
It is important to consider that misalignments, axial, angular and parallel, must be considered paired together, as inversely proportional (one
reduces when the other increases). If all types of misalignments occur, it is necessary that the sum in percentage respect to the maximum value
doesn't exceed 100%.
If the metallic bellow is damaged, the whole coupling becomes unusable, so it is advised to be very careful in assembling and disassembling
the individual components.
GSF - bellow coupling: technical data
S1
S2
DIMENSIONS
Size
Code
D
Dk
1
2
3
4
5
2AA971nnnuuu
2AA972nnnuuu
2AA973nnnuuu
2AA974nnnuuu
2AA975nnnuuu
34
40
55
65
83
36
44
58
73
89
E H7
Min
5
8
10
14
14
Max
16
20
30
38
45
N
P
R
U
17
20,5
22,5
26
31
16,5
21
27
32
41
50,5
62
72
84
103
4,5
5,5
6,5
8
9,5
TECHNICAL CHARACTERISTICS
Size
Torque
[Nm]
Nom Max
1
2
3
4
5
5
10
15 30
35
70
65 130
150 300
Weight Inertia
[Kg] [Kgm2]
0,07
0,14
0,29
0,45
0,93
Max
speed Grubscrew screw
[Rpm]
S2
S1
0,000014 14000
0,000032 12000
0,000136 8500
0,000302 7000
0,001049 5500
M3
M3
M4
M4
M4
M4
M5
M6
M8
M10
Tightening
torque [Nm]
grubscrew screw
S2
S1
2,9
0,8
6
0,8
10
2
25
2
49
2
Misalignments
angular
a[ ° ]
axial
X [mm]
1° 30'
1° 30'
2°
2°
2°
±0,5
±0,6
±0,8
±0,8
±1,0
Rigidity
radial
torsional
axial
K [mm] RT [Nm/rad •103] RA [N/mm]
0,20
0,20
0,25
0,25
0,30
3,050
7,000
16,300
33,000
64,100
30
45
69
74
87
radial
RR [N/mm]
92
129
160
227
480
TORQUE PERMISSIBLE WITH CLAMP LOCKING
Size
1
2
3
4
5
5
5
6
6
7
7
8
8
13
9
9
14
10
10
16
Torque transmitted [Nm] according to the ø finished bore [mm]
11 12 14 15 16 18 19 20 24 25 28 30 32 35 38 40 42 45
11 12 14 15 16
18 19 22 24 25 29 30 32
25 27 32 34 36 41 43 45 54 57 63 68
75 79 83 100 104 116 124 133 145 158
132 158 165 183 198 211 231 248 263 277 295
APPLICATION EXAMPLE
Servomotor
Slide
GSF model
Recirculating ball-screw
GSF application + DSS/SG torque limiter
NOTES
Ä
Code: Item available only with finished bore. When ordering, please indicate on position “nnn” the finished bore of one hub, and on position
“uuu” the finished bore of the second hub. Example: GSF size 1 finished bore ø10-16 ® 2AA971010016.
Ä
Technical characteristics: the weights refer to the coupling with minimum bore; inertias refer to the coupling with maximum bore.
15
GAS/SG - backlash free jaw coupling: introduction
Made in steel fully turned with standard phosphating treatment.
Several elastomer hardnesses available.
High torsional ridigity.
Electric insulation between the parts.
Statically balanced.
Version with integrated locking assemblies (GAS/SG/CCE).
ON REQUEST
Conformity to Directive ATEX possible.
Specific surface treatments or version fully in stainless steel, aluminium, possible.
Manufacturing made to length and customizations for specific needs.
Connection to ComInTec TORQUE LIMITERS range possible.
The coupling GAS/SG is an elastomeric coupling with compact dimensions composed of two hubs made in steel UNI EN10083/98, fully turned
and one elastomeric element.
The hub's tooth profile is designed to allow the elastomeric element to work only by compression and not in shear, allowing for long life of the
coupling in high reversal or load applications.
The presence of the elastomer assures:
- the possibility to absorb collisions and vibrations;
- to compensate for unavoidable misalignments between the shafts;
- silence during transmission;
DESCRIPTION OF THE ELASTOMERIC ELEMENT
16
The fundamental item of this coupling is the elastomeric element or elastomer, made in polyurethane and available in several hardness grades,
for different uses and applications. The elastomer is manufactured to resist ageing, scoring, fatigue, hydrolysis and UV radiations, promoting
long life operation. Also resisting main chemical agents, like ozone, oils, grease and hydrocarbons.
The elastomeric element becomes prestressed during the assembly between the relevant hub's teeth, in order to be able to transmit the motion
without backlash, so torsionally rigid inside the prestressing load. The prestressed elastomer's surface is sufficiently wide to induce a low
contact pressure on the tooth of the same elastomer, reducing the permanent deformations, promoting a long life.
ATEX CONFORMITY
The GAS/SG coupling can be supplied in accordance to Directive 94/9/CE ATEX, which is relevant to
protection apparatus and systems for use in potentially explosive spaces.
The dimensions of this coupling's version are not different from the standard version.
A mark relevant to the coupling's performances is printed on the hubs. It is necessary to consider planned
tests, like described in the use and maintenance manual supplied together with each ATEX coupling.
The elastomeric elements used can be:
red elastic element in polyurethane, 98 Shore-A : II 2 G D c T6 -20≤Ta≤+60°C X U
yellow elastic element in polyurethane, 92 Shore-A : II 2 G D c T5 -20≤Ta≤+80°C X U
GAS/SG : backlash free jaw coupling: introduction
Elastomeric element SG
92 Sh-A
Elastomeric element SG
98 Sh-A
Elastomeric element SG
64 Sh-D
SG ELASTIC ELEMENT: TECHNICAL CHARACTERISTICS
Hardness
[Shore]
Material
Color
Permitted temperature [°C]
Working
For short period
92 Sh-A
Polyurethane
Yellow
-40 ÷ +90
-50 ÷ +120
98 Sh-A
Polyurethane
Red
-30 ÷ +90
-40 ÷ +120
64 Sh-D
Polyurethane
Green
-20 ÷ +110
-30 ÷ +120
Uses
- low and medium power
- measurement and control system
- common electric motors
- high transmission torque
- actuators, screwjacks
- servomotors, right angle gearboxes
- high torsional rigidity
- tool machines
- internal combustion motors
SG ELASTOMERIC ELEMENT: PERFORMANCE CHARACTERISTICS
Size
01
(14/16)
00
(19/24)
0
(24/28)
1
(28/38)
2
(38/45)
3
(42/55)
4
(48/60)
5
(55/70)
6
(65/75)
Hardness
[Sh]
Torque
[Nm]
Misalignments
Nom
Max
angular
a[ ° ]
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
7,5
12,5
16
10
17
21
35
60
75
95
160
200
190
325
405
265
450
560
310
525
655
15
25
32
20
34
42
70
120
150
190
320
400
380
650
810
530
900
1120
620
1050
1310
1°
0° 54'
0° 48'
1°
0° 54'
0° 48'
1°
0° 54'
0° 48'
1°
0° 54'
0° 48'
1°
0° 54'
0° 48'
1°
0° 54'
0° 48'
1°
0° 54'
0° 48'
98 Sh-A
685
1370
0° 54'
98 Sh-A
1040
2080
0° 54'
axial
X [mm]
Rigidity
radial
K [mm]
torsional
RT [Nm/rad •103]
axial
RA [N/mm]
radial
RR [N/mm]
0,14
0,09
0,06
0,10
0,06
0,04
0,14
0,10
0,07
0,15
0,11
0,08
0,16
0,12
0,09
0,18
0,15
0,10
0,22
0,16
0,11
115
170
235
680
980
1400
1600
2350
3050
2410
3620
4500
5250
7850
9920
6800
18600
26400
7800
20400
32400
340
510
700
1900
2300
4280
4410
6300
9600
7060
10900
14500
11950
21850
33600
14700
47500
71300
18000
50600
96250
330
650
855
1200
2000
2900
1560
2620
3710
2020
3490
4500
2400
4650
6380
2450
5760
7570
2850
6400
8900
2,2
0,17
24200
61500
7150
2,6
0,18
38000
96500
6450
1
1,2
1,4
1,5
1,8
2
2,1
17
GAS/SG - backlash free jaw coupling: technical data
Clamp locking
(on request)
DIMENSIONS
A
D1
D2
01 (14/16)
00 (19/24)
0 (24/28)
1 (28/38)
2 (38/45)
3 (42/55)
4 (48/60)
5 (55/70)
6 (65/75)
30
40
55
65
80
95
105
120
135
30
40
53
63
78
93
103
118
133
32
40
48
66
75
85
98
115
E H7
max
16
25
35
40
48
55
62
74
80
E4 H7
max
15
20
30
35
45
50
60
65
70
M
N
P
Q
R
T
U
V
N1
R1
R2
54
62
77
86
95
108
124
11
25
30
35
45
50
56
65
75
12
16
18
20
24
26
28
30
35
16,5
18,5
24
33
38
45
49
61
35
66
78
90
114
126
140
160
185
10
18
27
30
38
46
51
60
68
5
10
10
15
15
20
20
20
20
M4
M5
M5
M8
M8
M8
M8
M10
M10
18,5
37
50
60
70
75
80
90
100
42,5
78
98
115
139
151
164
185
210
50
90
118
140
164
176
188
210
235
TECHNICAL CHARACTERISTICS
Size
01 (14/16)
00 (19/24)
0 (24/28)
1 (28/38)
2 (38/45)
3 (42/55)
4 (48/60)
5 (55/70)
6 (65/75)
Torque
[Nm]
See page 17
18
Size
Weight
[Kg]
Inertia
2
[Kgm ]
M1
M2
Element
M1
0,06
0,2
0,4
0,7
1,3
1,9
2,8
4,0
5,9
0,2
0,3
0,5
1,1
1,8
2,4
3,8
4,6
0,005
0,009
0,020
0,030
0,060
0,980
0,105
0,150
0,200
0,00001
0,00005
0,00020
0,00042
0,00131
0,00292
0,00483
0,00825
0,01682
M2
Element
0,0000005
0,00003 0,000003
0,00010 0,00001
0,00022 0,00002
0,00089 0,00005
0,00232 0,00010
0,00383 0,00020
0,00740 0,00030
0,01087 0,00050
Clamp locking
Max
speed
[Rpm]
Screw
25000
19000
13500
11800
9500
8000
7100
6300
5600
M4
M5
M6
M8
M8
M10
M12
M12
M12
Tightening torque
[Nm]
3,1
6,2
10,5
25
25
69
120
120
120
TORQUE PERMISSIBLE WITH CLAMP LOCKING
Torque transmitted [Nm] according to the ø finished bore [mm]
6 8 10 11 12 14 15 16 18 19 20 22 24 25 28 30 32 35 38 40 42 45 48
01 (14/16) 6 7 8 8 9 10 10
00 (19/24)
21 21 22 22 23 23 24 25 25
0 (24/28)
43 44 44 45 46 47 47 49 50 51 53 54
1 (28/38)
90 91 92 95 97 98 102 104 107 110
2 (38/45)
109 111 113 114 118 120 123 126 130 133 135 139
3 (42/55)
260 267 272 276 284 291 296 301 308 316
4 (48/60)
449 456 463 474 484
5 (55/70)
508 519 530
6 (65/75)
564 575
Size
50
60
65
70
321
491 509 528
537 555 573 591
582 600 618 636 654
NOTE
Ä
55
Technical characteristics: the weights refer to the coupling with pilot bore; inertias refer to the coupling with maximum bore.
GAS/SG/CCE - backlash free jaw coupling with external locking assembly: technical data
DIMENSIONS
Size
01 (14/16)
00 (19/24)
0 (24/28)
1 (28/38)
2 (38/45)
3 (42/55)
4 (48/60)
5 (55/70)
6 (65/75)
Code
A
2QQ797nnnuuu
2QQ807nnnuuu
2QQ817nnnuuu
2QQ827nnnuuu
2QQ837nnnuuu
2QQ847nnnuuu
2QQ857nnnuuu
2QQ867nnnuuu
2QQ877nnnuuu
30
40
55
65
80
95
105
120
135
E H7
D
min
6
10
15
19
20
28
35
35
40
30
40
55
65
80
95
105
120
135
max
16
20
28
38
48
55
62
70
75
N
P
R
T
11
25
30
35
45
50
56
65
75
13
16
18
20
24
26
28
30
35
35
66
78
90
114
126
140
160
185
10
18
27
30
38
46
51
60
68
TECHNICAL CHARACTERISTICS
Weight
[Kg]
Size
01 (14/16)
00 (19/24)
0 (24/28)
1 (28/38)
2 (38/45)
3 (42/55)
4 (48/60)
5 (55/70)
6 (65/75)
M1
0,06
0,2
0,4
0,7
1,3
1,9
2,8
4,0
5,9
Inertia
[Kgm2]
Element
0,005
0,009
0,020
0,030
0,060
0,980
0,105
0,150
0,200
M1
0,00001
0,00005
0,00020
0,00042
0,00131
0,00292
0,00483
0,00825
0,01682
Element
0,0000005
0,000003
0,00001
0,00002
0,00005
0,00010
0,00020
0,00030
0,00050
Max
speed
[Rpm]
25000
19000
13500
11800
9500
8000
7100
6300
5600
Screw
UNI 5931
n°4 x M2,5
n°6 x M4
n°4 x M5
n°8 x M5
n°8 x M6
n°4 x M8
n°4 x M8
n°4 x M10
n°4 x M12
Tightening
screw torque
[Nm]
0,75
3
6
6
10
35
35
69
120
TORQUE PERMISSIBLE WITH EXTERNAL LOCKING ASSEMBLIES
Grand.
6 10 11 14 15
01 (14/16) 7 12 13 17 18
00 (19/24)
48 53 67 72
0 (24/28)
77
1 (28/38)
2 (38/45)
3 (42/55)
4 (48/60)
5 (55/70)
6 (65/75)
Torque transmitted [Nm] according to the ø finished bore [mm]
16 17 18 19 20 22 24 25 28 30 32 35 38 40 42 45 48 50 55 60 65 70 75
20
77 81 86 91 96
82 88 93 98 103 113 124 129 144
186 196 206 227 247 258 289 309 330 361 392
291 320 349 364 408 437 466 510 553 582 612 655 699
345 584 623 681 740 779 818 876 934 973 1071
681 740 779 818 876 934 973 1071 1168
1091 1184 1247 1309 1402 1496 1558 1714 1870 2026 2182
1852 1944 2083 2222 2315 2546 2778 3009 3241 3472
NOTES
Ä
Code: Item available only with finished bore. When ordering, please indicate on position “nnn” the finished bore of one hub, and on position
“uuu” the finished bore of the second hub. Example: GAS/SG/CCE size 1 finished bore ø28-36 ® 2QQ827028036.
Ä
Technical characteristics: the weights refer to the coupling with minimum bore; inertias refer to the coupling with maximum bore.
19
5
GAS - jaw coupling: introduction
Made in steel fully turned with standard phosphating treatment.
Several elastomer hardnesses available.
High compensation of misalignments.
Vibration dampening.
Statically balanced.
Modularity of the components, with different assembly versions.
ON REQUEST
Conformity to directive ATEX possible.
Specific treatments or version fully in stainless steel, aluminium, possible.
Manufacturing made to length and customizations for specific needs.
Connection to ComInTec TORQUE LIMITERS range possible.
The coupling GAS/SG is an elastomeric coupling with compact dimensions composed of two hubs made in steel UNI EN10083/98, fully turned
with one elastomer.
The hub's tooth profile is designed to allow the elastomeric element to work only by compression and not in shear, allowing for long life of the
coupling in high reversal or load applications.
The GAS base series are available in several hub versions to allow an assembly to suit the application.
M1 hub base hub for any kind of connection
M1L extended hub to connect long shafts
M2 hub with reduced external diameter for assembly in compact spaces.
F flange for connection shaft-flange
Customized spacer for connection of distant shafts
20
M1
M1L
M2
F
SPACER MADE TO LENGTH
DESCRIPTION OF THE ELASTOMERIC ELEMENT
The fundamental item of this coupling is the elastomeric element, made in different grades of hardness for different needs and applications. The
elastomer is manufactured from elements to resist ageing, scoring, fatigue, hydrolysis and UV radiations, promoting long life operation,
resisting main chemical agents, like ozone, oils, greases and hydrocarbons.
GAS - jaw coupling: introduction
Elastomeric element
92 Sh-A
Elastomeric element
98 Sh-A
Elastomeric element
64 Sh-D
ELASTOMERIC ELEMENT: TECHNICAL CHARACTERISTICS
Hardness
[Shore]
Material
Color
Allowed temperature [°C]
Working
For short periods
92 Sh-A
Polyurethane
Yellow
-40 ÷ +90
-50 ÷ +120
98 Sh-A
Thermoplastic
Red
-40 ÷ +125
-50 ÷ +150
64 Sh-D
Polyurethane
Green
-20 ÷ +110
-30 ÷ +120
Uses
- low and medium power
- systems with frequent stop, starts
- high transmission torque
- high temperature range
- high torsional rigidity
- internal combustion motors
ELASTOMERIC ELEMENT: PERFORMANCE CHARACTERISTICS
Size
00
(19/24)
0
(24/28)
1
(28/38)
2
(38/45)
3
(42/55)
4
(48/60)
5
(55/70)
6
(65/75)
7
(75/90)
8
(90/100)
Hardness
[Sh]
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
92 Sh-A
98 Sh-A
64 Sh-D
Torque
[Nm]
Nom
Max
10
17
21
35
60
75
95
160
200
190
325
405
265
450
560
310
525
655
410
685
825
625
940
1175
975
1465
2410
2400
3600
4500
20
34
42
70
120
150
190
320
400
380
650
810
530
900
1120
620
1050
1310
820
1370
1650
1250
1880
2350
1950
2930
4820
4800
7200
9000
Rigidity
Misalignments
Alternate
motion
2,6
4,4
5,5
9
16
19,5
25
42
52
49
85
105
69
117
145
81
137
170
105
178
215
163
245
305
254
381
625
624
936
1170
RT
angular
a[ ° ]
axial
X [mm]
radial
K [mm]
1° 18'
1,0
0,4
1° 18'
1,0
0,8
1° 18'
1,2
1,0
1° 18'
1,4
1,0
1° 18'
1,6
1,0
1° 18'
1,7
1,4
1° 18'
1,8
1,4
1° 18'
2,0
1,4
1° 18'
2,5
1,8
1° 18'
2,8
1,8
[Nm/rad•10 3]
25%
nom torque
50%
nom torque
75%
nom torque
100%
nom torque
0,62
0,92
1,97
2,44
3,64
5,50
4,10
6,08
10,10
8,69
10,95
25,75
11,52
16,34
29,30
11,85
17,97
35,10
16,63
24,88
39,65
27,14
36,00
55,54
54,17
72,52
91,21
88,99
127,47
246,85
0,73
1,14
3,33
2,71
4,74
9,35
5,73
7,82
17,00
10,75
14,13
43,50
14,66
21,41
49,50
18,72
24,39
59,20
26,27
33,77
66,90
38,00
48,01
93,65
70,10
92,30
153,87
113,90
172,99
415,53
0,93
1,33
4,40
3,66
5,47
12,40
6,62
8,88
22,55
12,55
18,25
57,50
17,27
25,17
65,45
21,34
27,68
78,30
29,94
38,33
88,55
40,71
55,55
124,00
89,38
112,81
203,51
164,29
201,82
550,13
1,18
1,49
5,37
4,43
5,92
15,10
7,65
10,68
27,50
14,57
21,90
70,10
21,50
30,29
79,85
24,52
34,14
95,50
34,42
47,27
107,90
50,67
66,47
150,10
103,63
123,07
249,12
177,98
230,65
672,87
21
GAS - jaw coupling: technical data
Clamp locking
(on request)
DIMENSIONS
Size
A
00 (19/24)
0 (24/28)
1 (28/38)
2 (38/45)
3 (42/55)
4 (48/60)
5 (55/70)
6 (65/75)
7 (75/90)
8 (90/100)
40
55
65
80
95
105
120
135
160
200
D1 D2
40
53
63
78
93
103
118
133
158
180
32
40
48
66
75
85
98
115
135
160
E H7 E4 H7
max max
25
20
35
30
40
35
48
45
55
50
62
60
74
65
80
70
95
110
-
M
N P
Q
R
T
U
V
54
62
77
86
95
108
124
141
164
25 16
30 18
35 20
45 24
50 26
56 28
65 30
75 35
85 40
100 45
16,5
18,5
24
33
38
45
49
61
69
81
66
78
90
114
126
140
160
185
210
245
18
27
30
38
46
51
60
68
80
100
10
10
15
15
20
20
20
20
25
30
M5
M5
M8
M8
M8
M8
M10
M10
M10
M12
N1 R1 R2
37
50
60
70
75
80
90
100
110
125
78
98
115
139
151
164
185
210
235
270
90
118
140
164
176
188
210
235
260
295
C
50
65
80
95
115
125
145
160
185
225
F
H7
40
55
65
80
95
105
120
135
160
200
G
L
K
R4
R5
Z
R6
1,5
1,5
1,5
1,5
2
2
2
2
2,5
3
58
74
92
107
132
142
164
179
208
248
8
8
10
10
12
12
16
16
19
20
49
56
65
79
88
96
111
126
144
165
61
76
90
104
113
122
136
153
169
190
n°5 x ø4,5
n°5 x ø4,5
n°6 x ø6,6
n°6 x ø6,6
n°6 x ø9
n°8 x ø9
n°8 x ø11
n°10 x ø11
n°10 x ø14
n°12 x ø14
32
34
40
44
50
52
62
67
78
85
22
TECHNICAL CHARACTERISTICS
00 (19/24)
0 (24/28)
1 (28/38)
2 (38/45)
3 (42/55)
4 (48/60)
5 (55/70)
6 (65/75)
7 (75/90)
8 (90/100)
see page 21
Size
Torque
[Nm]
Weight
[Kg]
Inertia
[Kgm2]
M1
M2
F
Element
M1
M2
F
Element
Max
speed
[Rpm]
0,2
0,4
0,7
1,3
1,9
2,8
4,0
5,9
9,1
17,0
0,2
0,3
0,5
1,1
1,8
2,4
3,8
4,6
7,2
12,5
0,1
0,3
0,6
0,9
1,6
1,8
3,0
3,7
5,2
8,3
0,009
0,020
0,030
0,060
0,980
0,105
0,150
0,200
0,380
0,650
0,00005
0,00020
0,00042
0,00131
0,00292
0,00483
0,00825
0,01682
0,03933
0,10936
0,00003
0,00010
0,00022
0,00089
0,00232
0,00383
0,00740
0,01087
0,02333
0,06036
0,00007
0,00014
0,00044
0,00121
0,00246
0,00302
0,00603
0,00912
0,02110
0,07019
0,000003
0,00001
0,00002
0,00005
0,00010
0,00020
0,00030
0,00050
0,00200
0,00400
19000
13500
11800
9500
8000
7100
6300
5600
4750
3750
Clamp locking
Screw
M5
M6
M8
M8
M10
M12
M12
M12
-
Tightening torque
[Nm]
6,2
10,5
25
25
69
120
120
120
-
TORQUE PERMISSIBLE WITH CLAMP LOCKING
Torque transmitted [Nm] according to the ø finished bore [mm]
6 8 10 11 12 14 15 16 18 19 20 22 24 25 28 30 32 35 38 40 42 45 48
00 (19/24)
21 21 22 22 23 23 24 25 25
0 (24/28)
43 44 44 45 46 47 47 49 50 51 53 54
Size
1 (28/38)
2 (38/45)
3 (42/55)
4 (48/60)
5 (55/70)
6 (65/75)
50
55
60
65
70
90 91 92 95 97 98 102 104 107 110
109 111 113 114 118 120 123 126 130 133 135 139
260 267 272 276 284 291 296 301 308 316 321
449 456 463 474 484 491 509 528
508 519 530 537 555 573 591
564 575 582 600 618 636 654
GAS and GAS/SG - jaw coupling: additional information
MOTORS
Size
Shaft
1000 rpm
750 rpm
Electric motor
P
C
(Kw) (Nm)
112 M ø28x60
0,09
0,12
0,18
0,25
0,37
0,55
0,75
1,10
1,50
1,4
1,8
2,5
3,5
5,3
7,9
11
16
21
132 S
ø38x80
2,20
132 M ø38x80
GAS
P
C
(Kw) (Nm)
92 Sh-A 98 Sh-A 64 Sh-D
- 0,06
- 0,09
0,18
01
01
01
0,25
0,37
00
00
00
0,55
00
00
00 0,75
00
00
00 1,10
GAS
92 Sh-A 98 Sh-A 64 Sh-D
C
P
(Kw) (Nm)
GAS
92 Sh-A 98 Sh-A 64 Sh-D
0
0
0
1,50
15
0
0
0
0
0
0
2,20
22
0
0
0
30
1
1
1
3,00
30
1
1
1
5,50
36
1
1
1
3,00
40
1
1
1
4,00
5,50
40
55
1
1
1
7,50
49
1
1
1
4,00
5,50
160 L ø42x110 7,50
180 M ø48x110
180 L ø48x110 11,00
54
74
100
145
2
2
2
7,50
75
2
2
2
11,00 72
2
2
2
2
2
2
2
2
2
2
2
2
2
15,00 98
18,50 121
22 144
2
2
2
2
2
2
2
2
2
ø55x110 15,00 198
3
3
3
109
148
181
215
2
3
200 L
11,00
15,00
18,50
22,00
3
3
3
30
196
3
3
3
225 S
ø55x110
18,50 244
ø60x140
4
3
3
-
-
-
37
240
3
4
-
3
4
-
4
4
4
4
4
225 M
ø55x110
ø60x140
22
290
4
3
3
3
3
4
4
292
3
4
45
4
4
293
3
4
30
4
4
4
4
4
250 M
ø60x140
ø65x140
30
392
6
4
4
4
4
5
5
356
4
5
55
5
5
361
4
5
37
5
6
5
5
5
ø65x140
280 S
ø75x140
37
483
6
5
5
45
438
6
5
5
75
484
6
5
5
ø65x140
ø75x140
45
587
6
5
5
5
5
581
5
5
6
90
6
6
535
6
6
55
ø11x23
71
ø14x30
80
ø19x40
90 S
90 L
ø24x50
ø24x50
100 L
ø28x60
160 M ø42x110
280 M
ø65x140
315 S
ø80x170
ø65x140
315 M
ø80x170
315 L
315
355
400
55
75
712
7
6
7
6
7
75
90
727
873
01
01
01
01
01
01
00
00
00
00
0
00
0
00
0
6
6
6
7
6
5
7
6
6
7
6
5
7
6
6
0,88
1,30
1,80
2,50
3,70
5,10
7,50
10
15
20
27
3000 rpm
0,12
0,18
0,25
0,37
0,55
0,75
1,10
1,50
2,20
3,00
4,00
63
0,7
1,1
2,0
2,8
3,9
5,8
8,0
12
1500 rpm
110 707
971
8
ø65x140 90 1170
ø80x170 110 1420
ø85x170 132 1710
ø65x140 160 2070
ø85x170 200 2580
ø75x140
250
3220
ø95x170
315 4060
355
4570
ø80x170
ø110x210 400 5150
8
7
7
110 1070
8
7
7
160 1030
8
8
8
-
8
8
8
8
8
-
8
8
8
8
8
8
-
132
160
200
250
315
400
450
500
8
7
8
8
8
8
-
7
200
250
315
355
400
500
560
630
1280
1550
1930
2410
3040
3850
4330
4810
8
8
8
-
7
7
8
8
8
-
132 849
1290
1600
2020
2280
2570
3210
3580
4030
P
C
(Kw) (Nm)
01
01
01
01
01
01
00
00
00
00
00
00
00
00
00
0,18
0,25
0,37
0,55
0,75
1,10
1,50
2,20
0
0
0
0
0
0
6
6
6
7
6
5
7
6
6
7
6
6
8
7
7
-
-
-
8
8
7
-
8
8
8
-
8
8
8
8
8
0,62
0,86
1,30
1,90
2,50
3,70
5,00
7,40
GAS
92 Sh-A 98 Sh-A 64 Sh-D
01
01
01
01
01
01
00
00
00
00
00
00
00
00
00
3,00 9,80
0
0
0
4,00
5,50
7,50
11,00
15,00
18,50
22
30
37
13
18
25
35
49
60
71
97
120
0
0
0
1
1
1
-
-
-
2
2
2
2
2
-
2
2
-
2
2
-
3
3
3
-
-
-
-
-
45
145
3
3
3
3
4
4
55
177
4
4
4
4
5
5
5
5
5
5
5
5
75
241
90
289
5
6
6
5
5
5
5
6
6
6
5
5
6
6
6
160 513
6
5
5
200
250
315
355
400
500
560
630
7
7
8
8
8
8
6
6
7
7
7
8
6
6
6
7
7
7
8
8
7
110 353
132 423
641
802
1010
1140
1280
1600
1790
2020
23
GAS & GAS/SG - jaw coupling: additional information
DIMENSIONING
For pre-selection of the coupling's size you can use the generic formula indicated on page 5.
Having established the coupling's size to be used, it is possible to make other checks considering further parameters:
Where:
Cnom
Cmot
Cmax
CSU
CSM
fA
fR
fT
Jmot
Juti
K
Cnom > Cmot • fT • fR
Considering the static torque:
Juti • • •
K fT fA + Cmot • fT • fR
Cmax > CSM • J +J
uti
mot
Cmax > CSU
•
Jmot • • •
K fT fA + Cmot • fT • fR
Juti+Jmot
In case of alternate motion,
= theoretic nominal torque of the coupling [Nm]
= nominal torque motor side [Nm]
= maximum torque of the coupling [Nm]
= static torque user side [Nm]
= static torque motor side [Nm]
= starting frequency factor
= rigidity factor
= thermic factor
= inertia motor side [Kgm2]
= inertia user side [Kgm2]
= shock factor
Where:
Calt
Cnom
fF
fR
fT
M
1
Cnom > M • Calt • fF • fT • fR
= alternate system torque [Nm]
= theoretic nominal torque of the coupling [Nm]
= resonance factor
= rigidity factor
= thermic factor
= coefficient of material
24
Coefficient of material (M)
0,25
aluminium
0,35
steel
1
1,4
1,8
Shock factor (K)
light shock
medium shock
hard shock
1
Resonance factor (fF)
frequency < 10
f
10
1
1,2
1,4
1,8
frequency > 10
Thermic factor (fT)
-30 ÷ +30 °C
> +30 ÷ +40 °C
> +40 ÷ +60 °C
> +60 ÷ +80 °C
2÷5
3÷8
>10
Rigidity factor (fR)
positioning system
tool machines
turn indicators
Starting frequency factor (fA)
1
0 ÷ 100 starting each hour
1,2 > 100 ÷ 200 starting each hour
1,4 > 200 ÷ 400 starting each hour
1,6 > 400 ÷ 800 starting each hour
1,8 > 800 ÷ 1600 starting each hour
APPLICATION EXAMPLE
RECIRCULATING
BALL SCREW
SERVOMOTOR
SERVOMOTOR
GAS/SG
GAS/SG + DSS/SG torque limiter
GAS & GAS/SG - jaw coupling: additional information
Having completed and checked the coupling choice, in accordance to the torque to be transmitted, it is necessary now to take into consideration
the necessary flexibility comparing the misalignments allowed from the kind of coupling selected, with the real ones, seen by the shafts to be
connected.
It is important to consider that misalignments, axial, angular and parallel, must be considered paired together, as inversely proportional (one
reduces when the other increases). If all types of misalignments occur, it is necessary that the sum in percentage respect to the maximum value
doesn't exceed 100%, according to “graphic 1”.
K
K
a
a
a
ea
lin
al
is
D
80
0
en
m
60
a
to
re
la
go
an
25
40
a
50
[%
a
a
a
2a
]
20
75
Disallineamento radiale K [%]
a
graphic 1
100
0
0
20
35
40
60
80
100
Disallineamento assiale X [%]
2a
a
25
Dove:
K = [ Ltot - (2 N) - P ] Tg α
•
•
Ltot
K
N
P
α
= total length [mm]
= radial misalignment [mm]
= useful length of an half-hub [mm]
= useful space of the elastomeric element [mm]
= angular misalignment [ ° ]
FITTING
Particular procedures to assemble this coupling are not required. It can be assembled both vertically and horizontally.
1) Achieve radial and axial alignments as precisely as possible, to have maximum absorption of possible misalignments and life of the coupling.
2) Assemble the two half-hubs on the shafts. Check that the external parts of the two shafts do not exceed the relevant half-hub's surface (quote
“N”) and fix this one to the shaft with its relevant fixing system.
3) Assemble the elastomeric element on one half-hub and close the other inserting the relevant teeths into the elastomeric element, being
careful to respect the distance of the two half-hubs indicated on the catalogue, quote “P”.
In case of connection by clamp locking or locking assemblies, tighten the relevant screws progressively up to the tightening torque indicated in
the catalogue, using a cross sequence.
GEC - compact elastic coupling: introduction
Made in steel fully turned with standard treatment of phosphating.
Maintenance possible without moving hubs.
Suitable for high operating temperature.
Statically balanced and vibration dampening
Maximum grade of protection.
Optimum ratio of torque / dimensions.
ON REQUEST
Two different elastomeric elements types for different temperatures.
Specific surface treatments or in aluminium fully turned version possible.
Customized manufacturing for specific needs, hub-flange or flange-flange.
Connection to ComInTec TORQUE LIMITERS range possible.
The GEC coupling is composed of two hubs in steel UNI EN10083/98 fully turned. These two hubs are connected by radial pins, made in steel with
high resistanceand seated within the elastomeric elements.
These pins, with their relevant elastomeric elements, are protected by an external band, allowing the coupling a high grade of protection.
This construction feature allows the user to be able to perform maintenance, by substituting the elastic elements, without the need to move the
two transmission hubs/shafts, reducing maintenance times and optimizing the plant productivity.
Particularly suitable to connect Pelton turbines, for the coupling between engines and worm compressors and in general for transmission where
safety is highly required without compromising the quality and effectiveness of the same transmission.
DESCRIPTION OF THE ELASTOMERIC ELEMENT
Two different kind of elastomeric element are available, distinguished by the colour. The main features are:
Good resistance to all common lubricants and hydraulic fluids.
Optimum mechanical properties.
Green element suitable to operate for short periods up to 170 °C.
26
DIMENSIONING
For pre-selection of the coupling's size you can use the generic formula indicated on page 5.
Alternatively it is possible to determine the coupling's nominal torque using several correction factors:
1
1,2
1,4
1,6
Thermic factor (fT)
-36 ÷ 60 °C
> 80 °C
> 100 °C
> 120 °C
1,2
1,5
1,8
Shock factor (K)
light shock
medium shock
hard shock
Where:
Cnom > Cmot • f • K • fT • fA
Cnom
Cmot
f
fA
fT
K
= theoretic nominal torqueof the coupling [Nm]
= nominal torque motor side [Nm]
= service factor (vedi pagina 5)
= starting frequency factor
= thermic factor
= shock factor
Having completed and checked the coupling's choice, in accordance to the torque to be transmitted, it is
necessary now, to take into consideration, the necessary flexibility comparing the misalignments allowed
from the kind of coupling selected, with the real ones, seen by the shafts to be connected.
It is important to consider that misalignments, axial, angular and parallel, must be considered paired
together, as inversely proportional (one reduces when the other increases). If all types of misalignments
occur, it is necessary that the sum in percentage respect to the maximum value doesn't exceed 100%.
Starting frequency factor (fA)
1
0 ÷ 120 starting each hour
1,2 > 120 ÷ 240 starting each hour
1,4 > 240 ÷ 400 starting each hour
1,6 > 400 ÷ 800 starting each hour
FITTING
Specific procedures to assemble this coupling are not required.
1) Achieve radial and axial alignment as precisely as possible for maximum absorption of possible misalignments and the maximal duration of
the coupling.
2) Having the coupling pre-assembled, insert the external half-hub on one shaft. Check that the external parts of the two shafts don't exceed the
relevant half-hub's surface (quote “N”) and fix this one to the shaft with its relevant fixing system.
3) Close the second shaft inserting it into the internal half-hub for a quantity not higher than the length of the bore (quote “N”). If the insertion
should be difficult, due to an accentuated misalignment, it is opportune to release all the connection pins, obtaining in this way a higher
flexibility between the two half-hubs.
4) After having inserted and fixed the hubs, take away each connection pin, damp them with loctite threadlocker, and reassemble and tighten
them carefully in progressive way following a cross sequence.
5) Cover the pins with the protection band, making the holes of the band coincide with the relevant locking spheres.
GEC - compact elastic coupling: technical data:
DIMENSIONS
Code
Size
00
0
1
2
3
4
5
6
7
Coupling with
BLACK element
200650000000
200660000000
200670000000
200680000000
200690000000
200700000000
200710000000
-
E H7
Coupling with
GREEN element
200655000000
200665000000
200675000000
200685000000
200695000000
200705000000
200715000000
200725000000
200735000000
A
D
63
78
108
130
161
206
239
315
364
42
50
70
80
100
120
135
215
240
F H7
pilot
max
pilot
max
5
10
12
15
15
20
30
40
40
20
28
38
45
60
70
80
150
180
5
10
12
15
15
20
30
40
40
20
28
38
45
60
70
80
110
140
G
M
42
50
70
80
100
120
135
175
210
52
63.5
89
111
140
168
201
260
310
N
P
Q
R
25 3.5 18 61,5
32 3.5 28 67,5
49 4 44 102
65 4 59 134
85 4 77 174
105 4 97 214
130 4 120 264
165 5 150 335
205 5 185 415
U
V
8
10
12
15
15
20
20
25
25
M4
M5
M6
M8
M8
M10
M10
M12
M12
TECHNICAL CHARACTERISTICS
Torque [Nm]
Size
Weight Inertia
Nom Max [Kg] [Kgm2]
Max
speed
[Rpm]
00
0
1
2
3
4
5
6
7
35
50
70
110
280 420
570 860
980 1500
2340 3600
3880 5800
15000 20000
30000 35000
6000
5500
5000
4500
4000
3100
2800
2000
1500
0,8
1,5
4,2
7,7
14,2
22,6
36,0
78,1
128,4
0,00045
0,00124
0,00633
0,01592
0,04666
0,12546
0,26035
0,88951
1,77108
Max temperature [°C]
BLACK
elastic
element
100 ±10
-
GREEN
elastic
element
170 ±10
Elastic
element
hardness
[Sh-A]
80
angular
a[°]
Misalignments
axial
X [mm]
radial
K [mm]
continuous
intermittent
continuous
intermittent
continuous
intermittent
1°
1°
0° 48'
0° 36'
0° 30'
0°24'
0°24'
0°24'
0°24'
1° 30'
1° 30'
1°
0° 48'
0° 42'
0° 30'
0° 30'
0° 30'
0° 30'
±0,7
±0,7
±0,7
±0,7
±0,8
±0,8
±0,8
±0,8
±0,8
±1,5
±1,5
±1,5
±1,5
±1,6
±1,6
±1,6
±1,6
±1,6
0,5
0,5
0,5
0,6
0,6
0,6
0,6
0,6
0,6
0,7
0,7
0,7
0,7
0,8
0,8
0,8
0,8
0,8
NOTES
Ä
Ä
Ä
Code: the 7th, 8th, 9th digits of the code indicate the Finished Bore diameter of an EXTERNAL half-hub in mm (000 = pilot bore).
Code: the 10th, 11th,12th digits of the code indicate the Finished bore diameter of an INTERNAL half-hub in mm (000 = pilot bore).
Technical characteristics: the weights refer to the coupling with pilot bore; inertias refer to the coupling with maximum bore.
27
GD - gear coupling: introduction
Hubs made in steel fully turned with standard treatment of phosphating.
Polyamide sleeve.
Statically balanced.
Maintenance and lubrication free.
Compact and simple to be assembled.
Vibrations dampening.
ON REQUEST
Longer hubs possible.
Version with sleeve in steel, circlip and seals.
Version with sleeve directly integrated in one hub.
Specific surface treatments possible.
The GD coupling is composed of two hubs in steel UNI EN 10083/98 fully turned, externally toothed with rounded profile and assembled only
with a sleeve in polyamide stabilized resin, toothed internally.
Due to the tooth profile with which the hubs and the sleeve are connected, you can obtain a high contact surface also in presence of
misalignments, in order to reduce the contact pressures, promoting a longer life.
The connection polyamide/steel assures a silent and reliable functioning, in absence of maintenance and lubrication.
This kind of coupling represents a reliable and economic kind of connection, for medium and big power industrial purposes.
DESCRIPTION OF THE SLEEVE
The standard sleeve is made in polyamide 6.6 stabilized resin, and its properties are the following:
Resistant to all common lubricants and hydraulic fluids
Suitable to operate in a continuous way on temperatures from -25°C up to 90°C and for short periods up to 125°C
Optimum sliding properties
High insulating capacities
Optimum mechanical properties
28
DIMENSIONING
For pre-selection of the coupling's size you can use the generic formula indicated on page 5.
Having established the coupling's size to be used, it is possible to make other checks considering further parameters:
Cnom > Cmot • fT
Considering the starting torque:
Juti • • •
K fT fA + Cmot • fT
Cmax > CSM • J +J
uti
mot
Cmax > CSU
•
Jmot • • •
K fT fA + Cmot • fT
Juti+Jmot
Where
Cnom
Cmot
Cmax
CSU
CSM
fA
fT
Jmot
Juti
K
= nominal torque of the coupling [Nm]
= nominal torque motor side [Nm]
= maximum torque of the coupling [Nm]
= starting torque user side [Nm]
= starting torque motor side [Nm]
= starting frequency factor
= thermic factor
= inertia motor side [Kgm2]
= inertia user side [Kgm2]
= shock factor
1
1,2
1,4
1,6
1,8
Thermic factor (fT)
-40 ÷ +60 °C
> +60 ÷ +70 °C
> +70 ÷ +80 °C
> +80 ÷ +90 °C
> +90 ÷ +100 °C
1
1,5
1,8
Shock factor (K)
slight impact
medium impact
strong impact
Starting frequency factor (fA)
1
0 ÷ 100 starting each hour
1,2 > 100 ÷ 200 starting each hour
1,4 > 200 ÷ 400 starting each hour
1,6 > 400 ÷ 800 starting each hour
It is important to consider that misalignments, axial, angular and parallel, must be considered paired together, as inversely proportional (one
reduces when the other increases). If all types of misalignments occur, it is necessary that the sum in percentage respect to the maximum value
doesn't exceed 100%.
FITTING
Specific procedures to assemble this coupling are not required.
1) Achieve radial and axial alignment as precisely as possible to have the maximum absorption of possible misalignments and the maximal
duration of the coupling.
2) Having pre-assembled the coupling, insert the external half-hub on one shaft. Check that the external parts of the two shafts don't exceed the
relevant half-hub's surface (quote “N”) and fix this one to the shaft with its relevant fixing system.
3) Insert the sleeve on the two half-hubs being careful to respect the distance of the same half-hubs, quote “P” on the catalogue.
4) Before starting transmission be sure that the sleeve can move axially free.
GD - gear coupling: technical data
DIMENSIONS
Size
Codie
1 (14)
2 (19)
3 (24)
4 (28)
5 (32)
6 (38)
7 (42)
8 (48)
9 (55)
10 (65)
11 (80)
12 (100)
13 (125)
200911000000
200912000000
200913000000
200914000000
200915000000
200916000000
200917000000
200918000000
200919000000
200920000000
200921000000
200922000000
200923000000
A
D
40
24
48
30
52
36
66
44
75
50
82
58
92
65
100 67
120 82
140 95
175 124
210 152
270 192
E H7
pilot
max
25
35
45
14
19
24
28
32
38
42
48
55
65
80
100
125
N
P
Q
23
25
26
40
40
40
42
50
60
70
90
110
140
4
4
4
4
4
4
4
4
4
4
6
8
10
6,5
8,5
7,5
19
18
18
19
27
29,5
36
46,5
63
78
R
S
50
37
54
37
56
41
84
46
84
48
84
48
88
50
104 50
124 65
144 72
186 93
228 102
290 134
U
V
6
6
6
10
10
10
10
10
20
20
20
30
40
M5
M5
M5
M8
M8
M8
M8
M8
M10
M10
M10
M12
M16
Long hub - GD-2ML (on request)
N1
R1
40
40
50
60
60
80
110
110
110
140
-
84
84
104
124
124
164
224
224
224
284
-
29
TECHNICAL CHARACTERISTICS
Size
1 (14)
2 (19)
3 (24)
4 (28)
5 (32)
6 (38)
7 (42)
8 (48)
9 (55)
10 (65)
11 (80)
12 (100)
13 (125)
Torque
[Nm]
Nom
11,5
18,5
23
51,5
69
88
110
154
285
420
700
1200
2500
Std
Max hub
23
0,10
36,5 0,18
46
0,23
103,5 0,54
138 0,66
176 0,93
220
1,10
308
1,50
570
2,63
840
4,02
1400 8,40
2400 15,37
5000 31,19
Weight [Kg]
Long
hub
Sleeve
0,13
0,28
0,42
0,79
0,97
1,83
2,76
3,21
5,12
7,92
-
0,022
0,028
0,037
0,086
0,104
0,131
0,187
0,198
0,357
0,595
1,130
1,780
3,880
Inertia [Kgm2]
GD
0,000027
0,000050
0,000092
0,000311
0,000530
0,000959
0,001306
0,001815
0,004944
0,010634
0,037055
0,096122
0,328750
GD-2ML
0,000034
0,000078
0,000173
0,000455
0,000795
0,001918
0,003420
0,003993
0,009064
0,021268
-
Max
speed
[Rpm]
14000
11800
10600
8500
7500
6700
6000
5600
4800
4000
3150
3000
2120
Operating
temperature
[°C]
-25 ÷ +80
Misalignments
angular
a[ ° ]
axial
X [mm]
radial
K [mm]
±1°
±1°
±1°
±1°
±1°
±1°
±1°
±1°
±1°
±1°
±1°
±1°
±1°
±1
±1
±1
±1
±1
±1
±1
±1
±1
±1
±1
±1
±1
±0,3
±0,3
±0,4
±0,4
±0,4
±0,4
±0,4
±0,4
±0,4
±0,6
±0,7
±0,8
±1,1
NOTES
Ä
Ä
Ä
Code: the 7th, 8th, 9th digits of the code indicate the Finished Bore diameter of a half-hub in mm (000 = pilot bore).
Code: the 10th, 11th,12th digits of the code indicate the Finished bore diameter of the second half-hub in mm (000 = pilot bore).
Technical characteristics: the weights refer to the coupling with pilot bore; inertias refer to the coupling with maximum bore.
GF - highly flexible coupling: technical data
Made in steel fully turned with standard treatment of phosphating.
Simple manufacturing.
High angular misalignments possible.
Elastic element with an internal nylon weave for high reliability.
Maintenance without moving the hubs axially possible.
Finished bore and keyway with ISO H7 tolerance and low roughness.
ON REQUEST
Different fixing systems on the hubs possible.
Specific surface treatments possible.
Connection to ComInTec TORQUE LIMITERS range possible.
The GF coupling, even if being built simply, assures a high elastic reliability which allows the recovery of high angular misalignments (up to 5°),
absolutely reducing the drive irregularities.
It is composed of two hubs in steel UNI EN10083/98 fully turned and by an elastomeric central ring connected with screws and bolts in alternate
way in respect to the two hubs.
30
DIMENSIONS
Size
X0
X1
X2
X3
X4
X5
Code
A
200820000000 98
200830000000 128
200840000000 162
200850000000 178
200860000000 198
200870000000 235
B
C
D
100
130
165
185
205
240
78
100
125
140
160
195
48
70
90
105
125
155
E H7
pilot
max
10
28
14
38
19
48
19
55
28
65
30
85
N
P
Q
R
U
V
45
55
72
76
84
100
17
24
29
36
44
50
34
44
56
60
68
80
107
134
173
188
212
250
8
12
12
15
15
15
M4
M6
M6
M8
M8
M8
"W" model (on request)
Code
B
P
200822000000 100 22
200832000000 125 28
200842000000 155 34
200852000000 172 38
200862000000 193 42
200872000000 233 48
R
112
138
178
190
210
248
TECHNICAL CHARACTERISTICS
3.4
6.0
8.2
12.7
16.9
22.2
0.00256 5000
0.00826 4500
0.02654 3600
0.04268 3500
0.07775 2800
0.19375 2500
radial
K [mm]
3°
4°
4°
4°
4°
4°
1.5
2
2.5
3
3
3.5
1
1
1.5
1.5
1.5
1.5
[Nm]
Nom
W 0 75
W 1 150
W 2 250
W 3 450
W 4 850
W 5 1850
Max
-
2.5
4.6
8.0
12.4
17.2
27.4
Max speed
[rpm]
axial
X [mm]
Size
angular
a[°]
Torque
Inertia [Kgm2]
"W" model
Misalignments
Weight [Kg]
Nom Max
X 0 75 225
X 1 230 690
X 2 470 1410
X 3 750 2250
X 4 1125 3375
X 5 1700 5100
Max speed
[rpm]
[Nm]
Inertia [Kgm2]
Size
Torque
Weight [Kg]
"X" model
0.00256 5000
0.00826 4500
0.02654 4000
0.04268 3600
0.07775 3200
0.19375 2500
Elastomeric
element
Misalignments
angular
a[°]
axial
X [mm]
radial
K [mm]
5°
5°
5°
5°
5°
5°
3.5
3.5
4.5
4.5
4.5
5
1
1
1.5
1.5
1.5
1.5
Hardness Operating
temp.
[Sh-A]
[°C]
70±5
60±5
NOTES
Ä
Ä
Ä
Code: the 7th, 8th, 9th digits of the code indicate the Finished Bore diameter of a half-hub in mm (000 = pilot bore).
Code: the 10th, 11th,12th digits of the code indicate the Finished bore diameter of the second half-hub in mm (000 = pilot bore).
Technical characteristics: the weights refer to the coupling with pilot bore; inertias refer to the coupling with maximum bore.
-25
÷
+70
Max
temp.
[°C]
+130
GFI - pin flexible coupling: technical data
Made in aluminium.
Simple manufacturing and assembly.
Low inertia.
Plug connection.
Suitable for low transmission power.
Finished bore and keyway with ISO H7 tolerance and low roughness.
ON REQUEST
Different fixing systems on the hubs possible.
Specific surface treatments possible.
Customized manufacturing for specific needs.
The GFI coupling is constructed with two aluminium hubs and one rubber elastic element hardness 79 Shore-A.
The hubs connection is a simple plug in style to allow fast assembly and/or eventual maintenance.
31
DIMENSIONS
Size
Code
A
B
D
00.22
00.28
00.35
00.45
200836000000
200806000000
200816000000
200826000000
22,5
30
35,5
48
22,5
28
35
45
12
16
20
25
E H7
max
6
9
11
15
M
N
P
Q
R
22,5
25
30,5
38
12,5
15
18,5
22,5
6
6
7,5
8,5
8,5
11
14,5
17
31
36
45
55
TECHNICAL CHARACTERISTICS
Torque
[Nm]
Size
00.22
00.28
00.35
00.45
Nom
0,8
1,0
1,9
3,5
Max
1,5
2,2
3,4
6,3
Weight
[Kg]
Inertia
[Kgm2]
Max
speed
[Rpm]
0,02
0,04
0,07
0,13
0,00007
0,00009
0,00018
0,00055
18000
17000
16500
13000
Elastomeric element
Tearing
[N/mm 2]
> 45
Misalignments
Hardness
[Sh-A]
angular
a[°]
axial
X [mm]
radial
K [mm]
79 ±3
1°
1°
1°
1°
0,1
0,1
0,1
0,1
0,1
0,1
0,1
0,1
NOTES
Ä
Ä
Ä
Code: the 7th, 8th, 9th digits of the code indicate the Finished Bore diameter of a half-hub in mm (000 = pilot bore).
Code: the 10th, 11th,12th digits of the code indicate the Finished bore diameter of the second half-hub in mm (000 = pilot bore).
Technical characteristics: the weights refer to the coupling with pilot bore; inertias refer to the coupling with maximum bore.
GC - chain coupling: technical data
Made in steel fully turned with standard treatment of phosphating.
Negligible power loss, absorbed by the coupling.
Simple manufacturing.
Hardening of hub teeth.
Optimum quality / price ratio.
Maintenance without moving the hubs axially.
ON REQUEST
Different fixing systems on the hubs possible.
Specific surface treatments possible.
Connection to ComInTec TORQUE LIMITERS range possible.
DIMENSIONS
32
Size
Code
A
D
01
00
0
1
2
3
4
5
6
7
200808000000
200818000000
200828000000
200838000000
200848000000
200858000000
200868000000
200878000000
200888000000
200898000000
45
58
75
101
126
159
183
215
291
312
25
37
50
70
89
112
130
130
150
170
E H7
pilot
8
10
12
16
20
20
28
30
40
50
max
12
20
28
38
55
70
80
80
90
110
N
P
R
U
V
9
20
19
29
38
56
59
88
103
124
13
21
23,5
29
32
35,5
38,5
40
46
46
31
61
61,5
87
108
147,5
156,5
216
252
294
4
5
8
8
12
12
15
15
25
25
M3
M3
M4
M4
M6
M6
M8
M8
M10
M10
TECHNICAL CHARACTERISTICS and NOTES
Size
01
00
0
1
2
3
4
5
6
7
Max
Torque
[Nm]
Pitch
(double chain)
ISO-R 606
Weight
[Kg]
Inertia
[Kgm2 ]
Max
speed
[Rpm]
angular
a[°]
Misalignments
axial
X [mm]
radial
K [mm]
140
3/8"x7/32" Z12
0,2
0,00002
6000
2°
1,50
0,20
190
3/8"x7/32" Z16
0,6
0,00009
5000
2°
1,50
0,20
600
3/8"x7/32" Z22
1,0
0,00030
3800
2°
1,50
0,20
700
1/2"x5/16" Z22
2,7
0,00148
2800
2°
2,40
0,25
1400
3/4"x7/16" Z18
5,4
0,00497
2200
2°
3,20
0,30
2500
1"x17,02 Z17
11,8
0,01817
1800
2°
4,50
0,35
3200
1"x17,02 Z20
16,9
0,03530
1500
2°
4,80
0,40
4000
1"x17.02 Z24
19,5
0,05333
1300
2°
4,80
0,40
7000
1"1/4x3/4" Z26
42,5
0,19027
1000
2°
6,30
0,50
8000
1"1/4x3/4" Z28
58,6
0,28643
900
2°
6,30
0,50
NOTES
Ä
Ä
Ä
Code: the 7th, 8th, 9th digits of the code indicate the Finished Bore diameter of a half-hub in mm (000 = pilot bore).
Code: the 10th, 11th, 12th digits of the code indicate the Finished bore diameter of the second half-hub in mm (000 = pilot bore).
Technical characteristics: the weights refer to the coupling with pilot bore; inertias refer to the coupling with maximum bore.
ComInTec® IDENTIFICATION
LABEL
ComInTec, as identification batch for each group, uses a plastic label on all the elements assisting traceability of the item and of the
production.
This is also necessary for eventual spare parts, repeat orders, or to ask for information regarding a specific product.
Following is an explanation of the label:
Cod. 200835025035: product identification code
2025: progressive C.o. number
Example
V9: year of manufacture (2009)
C.o.: confirmation order number ...
Cod. 200835025035
www.comintec.it
C.o. V92025
Mod. GIUNTO GTR/6-S GR. 2
D25/35
Nm
150 - 300
150 - 300: Torque Nom (150) - Max (300)
Nm: torque measurement unit
D25/35: finished bore 1° (25) and 2° (35) half-hub)
Mod. GIUNTO GTR/6-S GR.2: model (GTR), size (2)
MARKING
33
Example:
R
R
c
ec
T
In
om
C
Co
m
In
Te
ComInTec® CERTIFICATIONS
Maximum attention to market
requests for conformity with
94/9/CE (ATEX) for use in potentially
explosive environments.
Certified company since
February 1996 according to
UNI EN ISO 9008:2008
Company and production
"Made in Italy".
PATENTED
Continuous product research and
development, some of them with
Italian and European patent
RoHS
2002/95/CE
Internal and external environment
protection complying with directive
2002/95/CE (RoHS), that forbids the use
of harmful substances during the
production progress or in the end product,
and complying with D.Lgs. 626/94 for
security and health at work.
European Power Transmission
Distributors Association (EPTDA).
The largest organisation of distributors and
manufacturers of power transmission and
motion control products in Europe.
PROJECT REQUEST
Your needs are our priorities.
If you need help for a product design, contact ComInTec experts for assistance and advice. It helps to fill in this
form. Your request will be handled in the shortest time possible.
General information:
34
Company name:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
City / State:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Name / Surname:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Title:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Phone:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
E-mail / website:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Quantity:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Planned yearly quantities:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Target price:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Use:
OEM name / website:
__________________________________________________
Application field / type of machine:
__________________________________________________
Where it is applied:
__________________________________________________
Model currently used:
__________________________________________________
Nominal torque (Nm):
__________________________________________________
Speed (Rpm):
__________________________________________________
Workplace:
Clean
Dusty
Humid / Wet
Other
Type of coupling:
Driving shaft diameter (mm):
___________________________________________________
___________________________________________________
____________________________________________
Driving shaft connection type:
Keyway
Locking assembly
Other _______________________________________________________________
PROJECT REQUEST
Driven shaft diameter (mm):
____________________________________________
Driven shaft connection type:
Keyway
Locking assembly
Other _______________________________________________________________
Notes:
_____________________________________________________________________________
_______________________________________________________________________________________
_______________________________________________________________________________________
IF REQUIRED WITH ComInTec TORQUE LIMITER
What it protects:
_______________________________________________________________
Re-engagement position:
Equidistant
360°
Not important
Other _______________________________________________________________
Electric signal of overload required:
Yes
No
Note:
_____________________________________________________________________________
_______________________________________________________________________________________
_______________________________________________________________________________________
Signature
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
PLEASE ALSO SEND, IF AVAILABLE, A DRAWING OR PHOTOGRAPH. IT CAN ASSIST US
ENORMOUSLY IN HELPING TO FULLY UNDERSTAND YOUR APPLICATION.
Send to [email protected] or by fax +39 051 782256 (Att. Technical Department)
35
PRODUCTION PROGRAMME
CLUTCHES
ELASTOMERIC COUPLINGS - RIGID COUPLINGS
LOCKING RINGS
VARIABLE SPEED PULLEYS - MOTOR SLIDE BASES
ComInTec srl - Via Dell'Artigiano, 9 - 40055 Villanova di Castenaso - BOLOGNA - Tel. +39 051 780216 - Fax +39 051 782256 - [email protected] - www.comintec.it
Edition 05/2010
TORQUE LIMITERS
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