Siemens SIMOTICS Series Hardware Installation Manual

Mechanical mounting
6.3 Installing/removing the rotor
SIMOTICS M-1FE2 built-in motors
98 Hardware Installation Manual, 04/2020, A5E50074509B AA
6.3.4 Mounting the rotor
The rotor core and spindle shaft are connected to the rotor using thermal joining.
Three processes are deployed.
Hot process (shrinkage)
Cold process (stretching)
Combined cold-hot process
The tempered spindle shaft is
inserted into the rotor core that
has been heated up.
The rotor core is inserted over the
spindle shaft that has been
cooled down.
The heat rotor core is inserted
over the spindle shaft that has
been cooled down.
Observe the following safety instructions when mounting the rotor.
WARNING
Risk of explosion when using other coolants
Liquid oxygen or liquid air can cause explosions and death or severe injuries.
• Only use liquid nitrogen.
NOTICE
Danger of bearing damage
Low temperatures can damage the bearing of the spindle shaft.
• Use the cold process only when the bearing lubricant is certified for low temperatures.
NOTICE
Demagnetize the permanent magnets of the rotor core (applies only to synchronous
motors)
If the rotor temperature exceeds 150 °C, the permanent magnets in the rotor will be
demagnetized irreversibly.
• Prevent the rotor being heated above 150 °C by checking the rotor temperature with a
temperature-reactive dye or a temperature measuring device.
• Inductive heating of the rotor core is not permissible.
NOTICE
Damage to the rotor banding caused by impermissible temperatures
APM rotors have a banding (composite fiber) around the external diameter of the rotor
which must not be damaged.
Comply with the permissible temperatures during assembly (see Table "Assembly
temperatures")

Siemens SIMOTICS Series Specifications

General

Brand	Siemens
Model	SIMOTICS Series
Category	Engine
Language	English