REXROTH GTE Series, Project Planning Manual

Page: 30 / 86

● Output shaft with keyway according to DIN 6885-1:1968-08
For a form-fitting shaft-hub connection.
This connection mode is suitable for absorbtion of direction-constant speed at
low demand. It makes an additional axial safety of the hub necessary. There‐
fore, the frontal of the gearbox output shaft is provided with a centering hole
with a thread (see dimension sheet).
Shaft load To check the shaft load, the axial and radial shaft load have to be checked
separately:
The radial shaft load radial shaft load with subject to
●
the point of application of force and
● the middle speed
take from the diagrams of chapter 6.2 ”Permittable Shaft Load”. For the rated
bearing lifetime were 30,000 operation hours taken as basis (bearing calcula‐
tion according to DIN ISO 281:1993-01).
The axial shaft load is also described in the chapter 6.2 ”Permittable Shaft
Load”.
Assembly of output elements The output shaft of the GTE-gearboxes is fitted with a massive shaft shoul‐
der, which is well-suited for the support of axial forces, especially at key con‐
nections.
The according tightening torque (T
A
), resp. preliminary-tension forces (F
V
), for
mounting the output unit have to be taken from the following table.
Size (one-stage & two-stage)
GTE040 GTE060 GTE080 GTE120 GTE160
Thread M3 M5 M6 M10 M16
T
A
[Nm] 1.2 5.5 9.5 46 195
F
V*
[kN] 2.1 6.5 9.0 25 70
Tab.5-6: Tightening torque, resp. preload at mounting the drive units
TA Tightening torque
FV Preload
Fig.5-7: Output Shaft
Bosch Rexroth AG DOK-GEAR**-GTE********-PR08-EN-P
Rexroth GTE Planetary Gearboxes
28/83
Application Notes