Bosch Rexroth GTM Series, Project Planning Manual

Page: 71 / 90

Planetary Gearboxes Assembly
10-7
DOK-GEAR**-GTM********-PR01-EN-P
10.3 Gearbox mounting
Remove the protective cap from the gearbox shaft and thoroughly clean
the pilot diameter, the contact surface and the output shaft.
Mounting of the gearbox to machine (or robot, etc.) is to be made via the
output pilot diameter of the gearbox and with four through holes on the
gearbox housing.
We recommend using ISO 12.9-grade bolts with the proper tightening
torques. We also recommend securing the bolts with Loc-Tite.
Gearbox
type Pilot diameter Bolt size-ISO
grade Tightening
torque
[mm] [Nm]
GTM060
60 M5-12.9 9,5
GTM075
70 M6-12.9 16
GTM100
90 M8-12.9 40
GTM140 130 M10-12-9 79
GTM180 160 M12-12.9 135
GTM240 200 M16-12.9 330
Fig. 10-10: Flange-mounting data for installing the gearbox on the machine
Assure a nondistorted mount when installing the gearbox. Attached parts,
i.e. gears or pulleys have to be mounted on the output shaft without force.
In no case should they be mounted by using a hammer. Use only
appropriate tools or fixtures.
The maximum-allowable mounting forces are shown in the table below
(see Fig. 10-11). Permanent damage of the output bearings can occur
when using higher mounting forces.
Gearbox type Maximum static axial force
[N]
GTM060 9000
GTM075 11000
GTM100 19000
GTM140
32000
GTM180
50000
GTM240
90000
Fig. 10-11: Maximum static axial force allowed on the output shaft
CAUTION
Make sure that an unhindered circulation of air is
available, to avoid an over-temperature situation in
the drive-system (g motor).