Mechanical properties
3.3 Types of construction
1FK2 synchronous motors for SINAMICS S120
Configuration Manual, 06/2019, A5E46927724B AB
31
Table 3- 1 Designation of types of construction (acc. to IEC 60034-7)
IM B5
Standard
IM V1
The motors can be used in types of construction IM V1 and
IM V3 without having to order anything special.
Note:
When configuring the IM V3 type of construction, attention must
be paid to the permissible axial forces (force due to the weight
of the drive elements) and especially to the necessary degree of
protection.
IM V3
The 1FK2 motors have deep-groove ball bearings with life grease lubrication
The motors are supplied with cylindrical shaft extensions. Optionally, a shaft extension with a
keyway and feather key can be supplied.
For the 1FK2❑03 and 1FK2❑04 with degree of protection IP65, the radial shaft seal ring
shortens the useful shaft extension.
Shaft dimensions
Diameter × length in
mm
Shaft dimensions with
IP65
Diameter × length
in mm
Feather key
Width × height ×
length in mm
1FK2❑03
1)
1FK2❑04 19 (k6) × 40 19 (k6) × 32 6 × 6 × 22 M6
The shaft extension 11 mm × 23 mm can only be supplied without a keyway and without a shaft
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