1FK7 Synchronous Motors
Configuration Manual (PFK7), 10/2005 Edition, 6SN1197-0AD06-0BP1 5-35
Gearbox
Planetary gearbox
Gearbox
5.3 Planetary gearbox
5.3.1 Motors with mounted planetary gearboxes
The gearboxes assigned to the individual motors as well as the gearbox ratios, available for
these motor-gearbox combinations are listed in the selection tables of the motor-specific
Sections. When making a selection, the maximum permissible input speed of the gearbox
must be observed (this is the same as the maximum motor speed).
The motor-gearbox combinations, listed in the selection tables, are mainly intended for posi-
tioning duty (S3). The manufacturer must be contacted if the motors are to be used in contin-
uous duty at high speeds.
The 1FT
and 1FK synchronous motors can be supplied ex factory (Siemens) complete
with a planetary gearbox mounted through a flange.
5.3.2 Series SP+
5.3.2.1 Overview
1FK7 motors can be combined with planetary gearboxes to form compact coaxial drive units.
The gearboxes are flanged directly to the drive end of the motors.
When selecting gearboxes ensure that the maximum motor speed does not exceed the per-
missible speed of the gearbox. In the case of high operating frequencies, allowance must be
made for the withstand ratio f
2
.
The frictional losses of the gearbox must always be taken into account when engineering
geared drives.
The gearboxes are only available in a non-balanced design.
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