Bosch Rexroth MAD Project Planning Manual page 226

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Application notes
Maximum allowed radial force
Allowed radial force
Permitted axial force
Mean speed
Bosch Rexroth AG R911295781_Edition 11
x
F
radial
F
axial
Fig. 9-15: Example shaft load diagram
The maximum allowed radial force F
● Force action point x
● Shaft design (smooth or with keyway)
The allowed radial force F
● Arithmetically averaged speed (n
● Force action point x
● Bearing service life
Only low axial shaft loads are allowed for MAD/MAF motors.
MAD/MAF...
Admissible axial load F [N]
axial
Tab. 9-20: Axial load
The admissible axial load is applicable to all installation positions. For this
reason, IndraDyn A motors are not suitable for machine elements which gen‐
erate axial motor loads (e.g., helical driving pinions).
NOTICE
Do not strike the shaft end and do not exceed the allowed
axial and radial forces of the motor.
When installing the motor vertically, also observe the guidelines in
9.6.3 "Vertical installation positions" on page
The run-up and braking times can be ignored in the calculation, if the time in
which the drive is operated at a constant speed is significantly greater than
the acceleration and braking time. If the mean speed is calculated according
to the following equation, the acceleration and deceleration times are taken
into account.
MAD / MAF Asynchronous Housing Motors
x/mm
depends on the following factors:
radial_max
depends on the following factors:
radial
)
mean
100 130 ... 180
30
Motor damage due to strikes onto the motor
shaft
195.
F
radial_max
Welle glatt
Shaft plain
Welle mit Passfeder
Shaft with keyway
n min-1
mittel
n min-1
average
225
50 100
chapter