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5.4.2.4
Vertical types of construction with flange
The standard flange is provided with a centering. The choice of fit for the mating flange on
the driven machine is the system manufacturer's or the plant operator's responsibility.
If the motor is not fitted with a standard flange, align the motor to suit the driven machine.
Procedure
The motor axis must be vertical when it is lifted and the flange must be parallel to the mating
flange, so as to avoid seizing and stressing. Otherwise damage to the centering will result.
1. Grease the centering flange with assembly paste to make the process easier.
2. Screw in two studs into tapped holes on opposite sides of the driven machine flange. The
studs act as positioning aids.
3. Lower the motor slowly toward the driven machine and into the centering, so that the
flanges do not quite touch. Lowering too quickly risks damaging the centering.
4. If necessary, rotate the motor into the right position so that the clearance holes in the flange
are central to the tapped holes.
5. Lower the motor completely onto the mating flange so that it is fully in contact; then
remove the studs.
6. Fix the motor using the flange fixing bolts.
5.4.3
Removing the rotor shipping brace
If a rotor shipping brace is attached to the motor, remove it at the last possible moment,
for example, when you are ready to push on the output or drive element.
Storing the rotor locking device
Store the rotor locking device in a safe place. It must be remounted if the motor is removed
and shipped on further.
5.4.4
Recommended alignment accuracy
The alignment accuracy required depends essentially on the configuration of the overall
machine train. Observe the required alignment accuracy of the coupling manufacturer in all
cases when aligning the motor.
Table 5- 1
1LE7 shaft heights 71 ... 315
Operating Instructions, 04/2022, A5E51689275A-AA
Recommended alignment accuracy
Speed
rpm
750
1500
3000
Parallel offset
mm
mm per 100 mm coupling diameter
0.09
0.06
0.03
Installation
5.4 Installing the motor
Angular offset
0.09
0.05
0.025
53
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