CHIARAVALLI
COUPLING SIZE SELECTION INSTRUCTIONS
30
CHIARAVALLI GROUP
BRAND
GIFLEX
®
COUPLING SIZE SELECTION INSTRUCTIONS
TEST BASED ON THE ROTATING SPEED
TEST BASED ON THE REQUIRED USEFUL WORKING LIFE
The maximum rotating speed indicated for each coupling represents an operating limit calculated for an angular misali-
gnment that does not exceed 1/12 of a degree.
Both the nominal torque and the permitted rotating speed are reduced
for greater angular misalignments. Adopt a coefficient equal to 1.12 to increase the service factor and select the cou-
pling as described previously when both the misalignment and the operating speed are less than the suggested refe-
rence values, but are close to these values. Contact our Technical Services for operating conditions with misalignments
and operating speeds that exceed the suggested reference values.
Nominal operating conditions (torque, misalignment and rotating speed). Operating lifespans that exceed the standard
duration cause the nominal torque to decrease.
The service factor must be multiplied by a lifespan coefficient defined as follows if a given operating lifespan, which
exceeds the standard working lifespan, is required.
OPERATING LIFESPAN IN HOURS
3800
4000
6000
8000
12000
20000
LIFESPAN COEFFICIENT
1
1,06
1,17
1,26
1,39
1,58
The nominal torque verified for the lifespan must be further decreased in the fairly improbable circumstance in which
the actual operating speed is greater than the maximum permitted operating speed for the misalignment conditions of
the coupling when in operation.
COMPONENT PARTS OF THE “GIFLEX
®
” GFA COUPLING
POS. 1
POS.2
POS.3
POS.4
POS.5
description
N°
description
N°
Seal ring
N°
Flexible ring
N°
Flat
N°
Allen
N°
COUPLING
of
of
Corteco NBR
of
for bores
of
dowel
of
wrench
of
TYPE
pieces
pieces
DIN 3760 A
pieces
DIN 472
pieces
UNI 5923
pieces
pieces
GFA 25
sleeve
1
HUB
2
BA 42x56x7
2
56 I
2
M 6x8
2
D.3
1
GFA 32
sleeve
1
HUB
2
BA 56x72x8
2
72 I
2
M 6x8
2
D.3
1
GFA 40
sleeve
1
HUB
2
BA 64x80x8
2
80 I
2
M 6x8
2
D.3
1
GFA 56
sleeve
1
HUB
2
BA 80x100x10
2
100 I
2
M 6x8
2
D.3
1
GFA 63
sleeve
1
HUB
2
BA 100x125x12
2
125 I
2
M 6x8
2
D.3
1
GFA 80
sleeve
1
HUB
2
BA 125x160x12
2
160 I
2
M 6x8
2
D.3
1
GFA 100
sleeve
1
HUB
2
SMIM 150x180x12
2
180 I
2
M 6x8
2
D.3
1
GFA 125
sleeve
1
HUB
2
SM 190x220x15
2
220 I
2
M 6x8
2
D.3
1
GFA 155
sleeve
1
HUB
2
SMIM 240x280x15
2
280 I
2
M 6x8
2
D.3
1
COMPONENT PARTS OF THE “GIFLEX®” GFA COUPLING
POS. 1
POS.2
POS.3
POS.4
POS.5
description
N°
description
N°
Seal ring
N°
Flexible ring
N°
Flat
N°
Allen
N°
COUPLING
of
of
Serie UM Gaco
of
for bores
of
dowel
of
wrench
of
TYPE
pieces
pieces
NBR
pieces
DIN 471
pieces
UNI 5923
pieces
pieces
GFAS 25
sleeve
1
HUB
1
UM 60x40x10
1
40 E
1
M 6x8
2
D.3
1
GFAS 32
sleeve
1
HUB
1
UM 75x55x10
1
55 E
1
M 6x8
2
D.3
1
GFAS 40
sleeve
1
HUB
1
UM 85x65x10
1
65 E
1
M 6x8
2
D.3
1
GFAS 56
sleeve
1
HUB
1
UM 100x80x10
1
80 E
1
M 6x8
2
D.3
1
GFAS 63
sleeve
1
HUB
1
UM 120x100x10
1
100 E
1
M 6x8
2
D.3
1
GFAS 80
sleeve
1
HUB
1
UM 155x125x15
1
125 E
1
M 6x8
2
D.3
1
GFAS
100
sleeve
1
HUB
1
UM 180x150x15
1
150 E
1
M 6x8
2
D.3
1