Shaft Seals - Siemens SINAMICS G115D Operating Instructions Manual

Additional information on the SIMOGEAR geared motor
11.3 Specific data gearbox
Geared components
The geared components are hardened and ground.
For the helical worm gearbox, the worm is hardened and ground. The gear is manufactured
from high-quality bronze.
The bevel gear stage of the bevel gearbox is lapped in pairs.
Lubrication
The geared components are supplied with adequate lubricant by means of splash lubrication.
Shaft bearings
All shafts are mounted in rolling bearings. The rolling bearings are lubricated using splash
lubrication or oil-spray lubrication. Bearings that are not supplied with lubricant are closed
and grease-lubricated.
11.3.4

Shaft seals

The shaft sealing rings on the output side prevent lubricant from escaping from the housing
at the shaft outlet and prevent pollution 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 contaminants from outside.
Permitted oil sump temperatures -40° C to +80° C.
Seal for a longer service life (optional)
The radial shaft sealing ring with dust lip has an additional buffer axial seal towards the inside
of the gearbox. The sealing system has a high degree of reliability as a result of the
insensitivity with respect to contaminations in the oil.
Permitted oil sump temperatures -40° C to +100° C.
Seal to handle increased environmental stress (optional)
This seal is equipped with an additional fiber disk. The disk so provides increased protection
against higher environmental stress caused by dirt and dust.
Permitted oil sump temperatures -20° C to +80° C.
High temperature-resistant seal (optional)
The deployed radial shaft sealing rings are made of a temperature-resistant material.
Permitted oil sump temperatures -25° C to +110° C.
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Operating Instructions, 12/2020, FW V4.7 SP13, A5E48681219B-002
SINAMICS G115D distributed drive