REXROTH EcoDrive Cs Project Planning Manual page 154

8-32
Motors
L
L/2
P
Motor
radial force
MSM020B
MSM030B;
MSM030C
MSM040B
Maximum permissible radial
force F
radial_max
Permissible radial force F
Permissible axial force F
Bearings and Shaft Load
During operation, both radial and axial forces act upon the motor shaft
and the motor bearings. The construction of the machine and the
attachment of driving elements on the shaft side must be adjusted to one
another to ensure that the load limits specified are not exceeded.
wellenbelastung_radial.fh7
L: shaft length
P: point of action of the radial force
A, B: directions of the axial force
The following table shows the allowed shaft load of the individual motors.
During assembly
axial force
direction A
147 88.2
392 147
686 294
all data in N
Fig. 8-43: Allowed shaft load
The maximum permissible radial force F
factors:
• Shaft break load
• Point of force application
• Shaft design (plain; with keyway)
The permissible radial force F
radial
• Arithmetic mean speed (n
• Point of force application
• Bearing service life
The maximum permissible axial force F
axial
force. Please refer to the section entitled "Shaft load" in the technical data
for the proportionality factor.
Rexroth EcoDrive Cs Drives
A
B
radial force
direction B
117.6 68.6
196 245
392 392
depends on the following
radial_max
depends on the following factors:
radial
)
mean
is proportional to the radial
axial
DOK-ECODR3-DKC**.3-CS*-PR02-EN-P
M
wellenbelastung_axial.fh7
In operation
axial force
58.8
98
147