Vertical Installation Positions - Bosch Rexroth MAD Project Planning Manual

MAD / MAF Asynchronous Housing Motors
9.6.3

Vertical installation positions

Output shaft at top
Please note the following in case of foot mounting ...
● Forces which are transmitted by a gear and have an effect
on the motor feet are not allowed.
Forces taking effect via the gear shaft have to be supported
against the gear.
● Incorrect installation situations give rise to forces which may
cause short-term damage to the motors.
● See also the instructions on foot mounting in
stallation" on page
mounting" as an alternative.
1
IM V3
① Shaft gland IP 40 (standard)
Shaft gland with radial shaft sealing ring IP 65 (optional)
Fig. 9-5: Example: vertical MAF installation position
● Side A: Motors with shaft sealing ring have protection class
IP65 on the flange side. The tightness is therefore only guar‐
anteed for splash liquids. Fluid levels present on the output
side require a higher degree of protection.
● Side B: For fan grilles in axial fans, the degree of protection
IP24 applies. Shavings or large dirt particles can also pene‐
trate the fan grille.
● Degree of protection: The factory-set degree of protection of
the motors may not be reduced by modifying the motors or
retrofitting accessories.
If motors are installed vertically with the output shaft positioned at the top
(chapter 9.6.3 "Vertical installation positions" on page
can easily enter into the interior of the motor and lead to malfunctions or fail‐
ures.
Also note that, in this installation position, the axial bearing load (side B) of
motors of frame size 225 is so high (due to the heavy rotor weight and the
bearing pretension force) that the service life of the bearing has to be expec‐
ted to be clearly reduced to ~30% of the service life that was determined orig‐
inally.
If installed vertically with the output shaft positioned at the top, the
service life of motors of frame size 225 has to be expected to be
reduced to approx. 30%.
Application notes
chapter 11 "In‐
241. If necessary, consider "flange
IM V1
195), dirt and fluids
R911295781_Edition 11 Bosch Rexroth AG
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