6.2
Maximum Transferable Output Torque
At M
out, nenn
, Bosch Rexroth`s planetary gearboxes are designed for high-cycle
operation, in other words, if the application torques are always less than the
nominal torque, no recalculation is necessary. However, it is possible to transfer
higher application torques in the case of short torque peaks or long periods of
intermittent duty. The following figure serves as guideline:
multiplier
in dependence of turns of the output shaft
0,8
0,9
1
1,1
1,2
1,3
1,4
1,5
1,6
1,7
10000
100000
1000000
10000000
100000000
1000000000
rotations of the output shaft
multiplier
30.000
15.000.000
fatigue resistance
time fatigue resistance
static
T
2N
T
2max
Fig.6-2:
Increase factor depending on the number of rotations of the output shaft
The maximum application torque must not exceed 1.6 x M
out, nenn
. The number
of rotations of the output shaft at the max. torque has to be calculated. If the
number of rotations is larger than 15.000.000, the gearbox may only be sub‐
jected to the nominal torque of the gearbox. If the number of rotations is smaller
than 15.000.000, the increase factor can be calculated by means of the follow‐
ing formula:
If f > 1.6, f is set to 1.6
If f > 1.0, f is set to 1.0
The maximum transferable moment M
out, max
of the gearbox is then calculated
by means of M
out, max
= f · M
out, nenn
.
the maximum application torque must not exceed the calculated maximum out‐
put torque of the gearbox.
M
out, max
≤ M
application
DOK-GEAR**-GTE********-PR06-EN-P
Rexroth GTE Planetary Gearboxes
Bosch Rexroth AG
35/85
Technical Data
LSA Control S.L. www.lsa-control.com [email protected] (+34) 960 62 43 01