Siemens S120 Radial and axial forces, Radial forces between the stator and rotor

Motor assembly

6.1 Motor assembly

Radial and axial forces



)D



)U

1Rotor with permanent magnets

2Stator

Fa Axial attractive force

Fr Radial attractive force

Figure 6-1 Active forces when stators and rotors are installed

Radial forces between the stator and rotor

The following table shows the active radial forces (in N per 0.1 mm centering error) between the stator and rotor. The longer the active component, the greater the radial force.

Table 6- 1 Radial forces in N/0.1 mm with radial centering errors during installation

	Length of active	Length of active	Length of active	Length of active	Length of active	Length of active
	component:	component:	component:	component	component:	component
	50 mm	70 mm	100 mm	110 mm	150 mm	200 mm
1FW609	240	330	470	-	710	-
1FW613	360	500	710	-	1070	-
1FW615	330	460	660	-	990	-
1FW616	290	410	590	-	880	1180
1FW619	350	490	710	-	1060	1410
1FW623	420	590	840	-	1260	1680
1FW629	-	600	-	940	1280	1630

Note

You must note the radial forces between the stator and rotor as well as the maximum permissible concentricity error specified in the dimension drawings.

1FW6 Built-in torque motors

Configuration Manual, 05/2009, 6SN1197-0AE00-0BP3 81