LENZE
2
Drive dimensioning
Dimensioning
2-2
L-force gearboxes en 06/2011
Load capacity c
Rated value for the load capacity.
˘
c is the ratio of the permissible rated torque of the
gearbox to the rated torque supplied by the drive
component (e.g. the built-in Lenze motor).
Application factor k
(according to DIN 3990)
Takes into account the influence of temporally variable
loads which are actually present during the anticipated
operating time of gearboxes and geared motors.
k is determined by:
˘
The value of c must always be greater than the value of
the application factor k calculated for the application.
M
2, perm
c =
> k
M
1N
· i ·
±
gearbox
˘
The type of load
˘
The load intensity
˘
Temporal influences
Duty class
Type of load
I
Smooth running, minor or negligible shocks
II
Irregular running, average shocks
III
Irregular running, major shocks and/or
alternating load
8 h
16 h
24 h
Betriebsfaktor k
III
II
I
100
200
300
400
500
600
700
800
900
1000
1200
1500 1/h
0
0.8
0.9
1.0
1.0
1.1
1.1
1.2
1.2
1.2
1.3
1.3
1.3
1.4
1.4
1.4
1.5
1.5
1.5
1.6
1.6
1.6
1.7
1.7
1.8
Operating time/day
Application factor k
Switching operations/hour S
h