Bosch Rexroth IndraDyn MAD100B Rexroth IndraDyn MAD100C, Project Planning Manual

Page: 233 / 276

9.14.2 Gearbox
Ingressing fluid may damage the motor!
NOTICE
Fluids (e.g., cooling lubricants, gear oil, etc.) may not be present at the output
shaft. When gears are attached, only gears with a closed (oil-tight) lubrication
system may be used.
9.14.3 Couplings
Couplings are attached to transmit torques of two separate shaft ends. Usual‐
ly, shaft offset, phase-angle errors or axial distances have to be compensa‐
ted. If the couplings attached are too stiff, a circumferential radial load (= con‐
stantly changing the angular position) can therefore be generated on the out‐
put side. This circumferential radial load may result in an inadmissible high
load of the bearing seat and therefore to a significantly reduced service life of
the bearing.
Rexroth offers bearing variant "A" for attaching couplings to
MAD/MAF motors.
By selecting bearing "A", increased circumferential radial forces can be ab‐
sorbed without limiting the speed of the motor. In addition, there is no signifi‐
cant thermally induced change in length in the vicinity of the connection of the
motor output shaft.
Motor frame size
MAD/MAF...
Allowed circumferential radial forces F
radial_max
in N
Bearing A Bearing N / H / V
100B 1000 25
100C 1000 25
100D 1000 30
130B 1200 40
130C 1200 50
130D 1200 55
160B 1500 65
160C 1500 65
180C 1800 95
180D 1800 100
225C Not available 120
Tab. 9-21: Allowed circumferential radial forces
Recommended couplings In connection with bearing A, Rexroth recommends axially compensating
couplings, such as
●
Spring disk couplings with two sets of springs (double gimbal),
● Metal bellows couplings.
These coupling variants are free from play and have a high torsional strength
with low radial spring stiffness.
If the recommended coupling types cannot be used, it is absolute‐
ly necessary that consult Bosch Rexroth be consulted.
For example, recommended manufacturers of the aforementioned couplings
are:
MAD / MAF Asynchronous Housing Motors 223/265
Application notes
R911295781_Edition 11 Bosch Rexroth AG