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9-6
Application Notes
Foot Assembly
Vertical Installation Position
Output shaft pointing up
As opposed to flange assembly, the radial forces in the case of foot
assembly may act on the assembly surface (± 15°) only in the vertical
direction. The transfer of forces with other effective force directions is not
permitted.
F
F
15°
+
-
(1):
Assembly feet
Fig. 9-8:
Sample, MAF foot assembly
Notes:
When using foot assembly, please pay attention to the
following:
• Forces affecting the motor feet that are transferred from a
gearbox
Forces that are effective via a gearbox shaft must be
supported on the gearbox.
• An improper installation situation results in forces that can
quickly lead to motor damage.
• Note the information in chapter 11.2 on foot assembly.
Check the alternative "flange assembly".
In the case of vertical installation positions of motors with output shafts
pointing up (Fig. 9-9), dirt and fluids can enter the motor interior more
easily, causing malfunctions or failure.
The degree of protection on the flange side of motors with a shaft sealing
ring is IP 65. Hence, tightness is ensured only in case of splashing fluids.
Fluid levels present on A-side require a higher degree of protection.
For motors of frame size 225, note as well that by reason of the high rotor
weight and the bearing pre-tension, the axial bearing load (on the B-side)
occurring with this installation position is so high that the useful life of the
bearing must be expected to be significantly reduced to approx. 30% of
the originally calculated bearing life.
Rexroth IndraDyn A
F
F
15°
+
-
F
F
F
15°
+
-
are
not
DOK-MOTOR*-MAD/MAF****-PR03-EN-P
F
MAFMount.EPS
permitted.
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