Installation and Operational Instructions for EAS
®
-compact
®
Ratchetting clutch, Type 49_._ _0._
Size 4
Synchronous clutch, Type 49_._ _5._
Size 4
(B.4.14.4.EN)
17/03/2021 TK/GC/NU
Chr. Mayr GmbH + Co. KG
Eichenstraße 1, D-87665 Mauerstetten, Germany
Phone: +49 8341 804-0, Fax: +49 8341 804-421
Page 15 of 22
Clutch Dimensioning for
ROBA
®
-DS Mounted Couplings
Definition of terms:
T
KN
[Nm]
Coupling nominal torque
T
KS
[Nm]
Coupling peak torque
T
B
[Nm]
Operating torque
T
S
[Nm]
Operating peak torque
P [kW]
Drive machine nominal power
f
B
[-]
Service factor according to Table 15
f
t
[-]
Temperature factor according to Fig. 15
n [rpm]
Drive machine nominal speed
Table 15
Service Factor f
B
Work Machine
Load Class
I
II
III
D
ri
v
e
m
a
c
hi
ne
Electromotor,
turbine,
hydraulic motor
1.1
1.4
1.9
Piston machine
with more
than 3 cylinders
1.4
1.7
2.2
Piston machine
with up to
3 cylinders
1.7
2.0
2.5
If the operating torque is known, the coupling nominal torque
must be higher than the maximum occurring operating torque
T
KN
> T
B
(T
KN
acc. Table 11). Please also observe the height and
type of start-up impacts or sporadic load impacts.
As individual events, these may not exceed the stated clutch peak
torque T
KS
> T
S
(T
KS
acc. Table 11). The max. number of impact
occurrences over the entire coupling lifetime must not exceed
pulsating 1 x 10e5 or alternating 1 x 10e4 .
Fig. 15
Table 16
Classification of Work Machines
into Load Classes
Construction machinery
- Concrete blenders
- Chain conveyors
- Chain carriages
- Crushers
II
III
III
III
Chemical industry
- Mixers (thick fluids)
- Mixers (thin fluids)
- Centrifuges
- Blenders
II
I
II
II
Fans / vents
II
Generators / convertors
- Frequency converters
- Generators
I
II
Foodstuffs machines
- Kneading machines
- Mills
- Packaging machines
II
III
II
Paper machines
III
Compressors
II
Conveyor systems
- Conveyor belts
- Sloping elevators
- Goods elevators
- Passenger elevators
II
III
II
II
Wood / plastic processing
- Planing machines
- Reciprocating saws
- Extruders
- Blenders
II
III
II
II
Crane systems
II
Metal processing
- Punching / pressing
- Machine tools
III
II
Pumps
- Centrifugal pump (thin fluids)
- Centrifugal pump (thick fluids)
- Pistons / plunger pumps
I
II
III
Textile machines
II
Washing machines
II
T
KN
≥
9550 × P × f
B
×
f
t
n
Temperature [°C]
T
e
m
pe
ratu
re f
ac
tor f
t
[
-]