COMINTEC
6
C
nom
≥
9550
•
f
•
P
n
FLEXIBLE COUPLINGS - RIGID COUPLINGS
(BACKLASH FREE)
: introduc
Ɵ
on
For correct dimensioning of the chosen coupling, it is necessary to determine the correct torque to be transmi
Ʃ
ed, taking into considera
Ɵ
on
the type of applica
Ɵ
on and determining the service factor "f". In the table below, this value is indicated referring to some common
applica
Ɵ
ons according to norma
Ɵ
ve Agma 514.02.
The generic formula for calcula
Ɵ
ng the value of the rated torque must ensure that the coupling is as follows:
Where:
C
nom
= coupling's nominal torque [Nm]
f
= service factor
n
= speed
[Rpm]
P
= power applied
[Kw]
GUIDE TO CHOOSING
Sector
Type of machines
Service factor
Combus
Ɵ
on engines
Electric motors
Gas / Vapor turbine
Water
turbine
1÷3 Cylinders
4÷12 Cylinders
Machines for
food industries
Bo
Ʃ
lers, Mixer, Crushers
3,8
3,0
2,0
2,5
Centrifuges
3,0
2,5
1,5
2
Furnaces, mulini a pale, Driers
5,5
4,5
3,0
3,5
Machines for
chemical industries
agitators for viscous liquids, mixers, Heavy centrifuges,
cooling drums, Rota
Ɵ
ng
fi
lters
3,8
3,0
2,0
2,5
Agitators for liquids, Light centrifuges
3
2,5
1,5
2,0
Drum washers
5,5
4,5
3,0
3,5
Machines for building industries
Elevators, earth-moving machines
5,5
4,5
2,0
2,5
Machines for
extrac
Ɵ
on industries
Pump of process
3,8
3,0
2,0
2,5
Drilling installa
Ɵ
ons
5,5
4,5
3,0
3,5
Machines for rubber
processing industries
Bending machines
3,8
3,0
2,0
2,5
Extruders, Mixers, Crushers
5,5
4,5
3,0
3,5
Machines for
metalworking industries
Driving gears
3,5
3,0
1,5
2,0
Machine tools, Shears, Bending machines
3,8
3,0
2,0
2,5
Presses, punches, straighteners
5,5
4,5
3,0
3,5
Machines for tex
Ɵ
le industries
Prin
Ɵ
ng apparatus, Lap machines, Pickers, Frames
3,5
3,0
2,0
2,5
Packaging machines
Conveyors, Welders
3,8
3,0
2,0
2,5
Case packers, Burnishing machines, Forming, Palle
Ɵ
zers
5,5
4,5
3,0
3,5
Fans
Centrifuges
3,8
3,0
2,0
2,5
large blade
5,5
4,5
3,0
3,5
Conveyors
Chain, Screw, Plate conveyors,
Elevators
3,8
3,0
2,0
2,5
Inclined elevators, Extrac
Ɵ
on systems,
Belt conveyors
5,5
4,5
3,0
3,5
Machines for
paper industries
Bending machines
3,8
3,0
2,0
2,5
Paper pressers, Paper rolls, Cylinder dryers
5,5
4,5
3,0
3,5
Machines for
mining industries
Rail vehicles, Sump pumps, Winches to maneuver
3,8
3,0
2,0
2,5
Tracked vehicles, Wheeled loaders, Excavators cup
5,5
4,5
3,0
3,5
Compressors
Axial, Centrifugal, Radial
3,0
2,5
1,5
2,0
Mul
Ɵ
stage centrifugal blowers
3,8
3,0
2,0
2,5
Alternates
5,5
4,5
3,0
3,5
Machines for
plas
Ɵ
c processing
industries
Calenders, Crushers, Mixers
3,8
3,0
2,0
2,5
Machines for woodworking
processing industries
Generic woodworking
3,0
2,5
1,5
2,0
Planning machines
3,8
3,0
2,0
2,5
Bark-peelers, Saws
5,5
4,5
3,0
3,5
Machines for lamina
Ɵ
ng
industries
Light roller ways, Cooling beds
3,8
3,0
2,0
2,5
Cold rolling mills, pipe welders, ingot conveyors
cu
ƫ
ng-o
ff
machines, Sheet cu
ƫ
ng
5,5
4,5
3,0
3,5
Pumps
Centrifuges
3,0
2,5
1,5
2,0
Centrifuges for viscous liquids
3,8
3,0
2,0
2,5
Alterna
Ɵ
ves, Pressure pumps
5,5
4,5
3,0
3,5
Cranes
Slewing cranes, Li
Ō
ing cranes
3,8
3,0
2,0
2,5
Cranes traverse
3,0
2,5
1,5
2,0