Note
When air-cooled motors are connected, only rotating unions with a radial connection are used.
Mounting steps
Note
Mounting steps for air-cooled motors
The mounting steps 1, 11, 12, 13, and 14 are only required for air-cooled motors.
1. Remove the fan and intermediate housing from the motor.
2. If necessary, perform complete balancing of the motor using the exterior balancing disks. To
do this, remove the sealing cover.
Note
Sealing cover
• Remount the sealing cover after balancing.
• The sealing cover is required to comply with the degree of protection.
3. Attach hoses for the inlet and leakage to the rotating union. Use angle elements if necessary.
Note
Rotating union to be used
• Use a rotating union with radial connections.
4. Screw the rotating union into the NDE motor shaft extension. Tighten the rotating union with
the correct tightening torque. For this, use the wrench grip surface on the NDE motor shaft
extension to hold the other side.
5. Position the rotating union horizontally in such a way that the leakage connection is at the
lowest point.
6. Always connect the hose for leakage sloping downward at least 15°.
7. Also connect the hose for the inlet sloping downward.
8. If necessary, provide a ventilation hose for the leakage chamber. It equalizes the negative
pressure caused by the fan. Lead the ventilation hose upward.
9. Manually check that the rotor turns easily.
10.Test the mounting under pressure for leaks.
11.Make a burr-free cutout in the intermediate housing for the inlet and leakage hoses.
Mechanical properties
4.6Mounting of rotating unions on 1PH8 hollow-shaft motors
1PH8 SIMOTICS M main motors
102 Conguration Manual, 12/2022, A5E51895839A
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