Siemens SIMOTICS S-1FG1 Operating Instructions Manual page 60

Features and mounting positions of the servo geared motors
5.1 Properties
Gearbox shaft sealing rings
The shaft sealing rings on the output side prevent lubricant from escaping from the housing
at the shaft outlet and prevent contamination from entering the housing.
The optimum use of the seals depends on the ambient conditions and the lubricant being
used.
Radial shaft sealing ring
A high-quality radial shaft sealing ring is used as standard seal. The ring is provided with an
additional dust lip to protect against the ingress of dirt and contamination from outside.
Seal for a longer service life (optional)
The radial shaft sealing ring with dust lip has an intermediate axial seal towards the inside
of the gearbox. The intermediate axial seal has a sine-shaped sealing lip that protects the
sealing ring from dirt and contamination.
Seal to handle increased environmental stress (optional)
This seal is equipped with an additional fiber disk. In addition to the longer service life, the
disk also provides increased protection against higher environmental stress as a result of
moisture and dust.
Noise
The geared motors are certified for a wide range of installation and operating conditions.
These conditions, e.g. rigid or vibration-insulated foundation design, can to some extent
influence the noise emission considerably.
The circumferential velocity of the motor pinion has a significant influence on the additional
servo geared motor noise level. This is the reason that higher speeds or low transmission
ratios result in higher noise levels.
Note
External noise
Noise that is not generated by the servo geared motor, but emitted from it, is not take into
consideration.
Noise emitted by the driven load is not taken into consideration.
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SIMOTICS S-1FG1 servo geared motor
Operating Instructions, 12/2022, A5E47360747B/RS-AC