SIEMENS
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Siemens MD 50.8 · 2017
Gearbox options
Lubrication and sealing
5
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Overview
Lubrication
The gearboxes are filled in the factory with a high-quality
lubricant. Lubricants permitted for the various gearbox types
and applications are listed in the lubricant table.
Other oils from various lubricant manufacturers that have been
approved by Siemens AG can be found on the Internet in the
Service and Support pages in the List of approved and
recommended gear lubricants T 7300:
Note:
For ambient conditions with a high air humidity and salt-laden
atmosphere, we recommend that only mineral or PAO oils are
used.
Oil quantities
The lubricant quantity depends on the gearbox type, size and
mounting position. The corresponding oil quantities are
specified in the operating instructions and on the rating plate of
the geared motor.
Sealing
The standard models of gearbox are supplied with high-quality
radial shaft sealing rings with dust protection lips. This sealing
design is reliable for a wide range of applications.
Special application areas and environmental conditions require
special radial shaft sealing rings and materials, which are
coordinated with the particular gearbox oil and environment.
This coordinated sealing system results in a high reliability and
availability of the plant.
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Roller bearing greases for gearboxes and motors
The roller bearings of gearboxes and motors are lubricated in
the factory with a roller bearing grease that is coordinated with
the selected application area. The quantity of grease between
the rolling elements and the space in front of the bearing
depends on the operating conditions and the gearbox mounting
position. For operation in the selected application areas, it is not
necessary to lubricate the roller bearings.
We recommend that the grease filling of the roller bearings is
also changed when the oil or shaft sealing rings are replaced.
Other greases supplied by different lubricant manufacturers that
have been approved by Siemens AG are specified in the List of
approved and recommended gear lubricants T 7300.
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Selection
Gearboxes can be used for different applications. The following
lubricants and seals can be selected to ensure that a gearbox is
optimally designed for a specific application.
Note:
Note the ambient conditions specified in chapter
"General
options" on page 7/2.
Selection of lubricant
Application
Permissible
ambient
temperature
of oil
Oil type
°C
Designation acc. to
DIN 51502
Order code
Bevel gearboxes BH
Standard
-25 …
+40
CLP ISO PG VG220
K07
-35 … +40
CLP ISO PAO VG220
K12
-40 … +10
CLP ISO PAO VG68
K13
-25 … +80
CLP ISO PG VG460
K08
Foodstuff area
-25 …
+40
CLP ISO H1 VG460
K11
-30 …
+10
CLP ISO H1 VG100
K14
Bevel gearboxes KH
Standard
-15 …
+40
CLP ISO VG220
K06
-35 … +40
CLP ISO PAO VG220
K12
-40 … +10
CLP ISO PAO VG68
K13
-25 … +80
CLP ISO PG VG460
K08
-25 … +50
CLP ISO PG VG220
K07
Foodstuff area
-25 … +40
CLP ISO H1 VG460
K11
-30 …
+10
CLP ISO H1 VG100
K14
Biodegradable oil
-20 … +40
CLP ISO E VG220
K10
CLP = mineral oil
CLP PG = polyglycol oil
E = ester oil, organic oil (bio oil / risk of water pollution, class WGK1)
PAO = poly-alpha-olefin oil
CLP H1 = physiologically safe oil (USDA-H1 approval)
© Siemens AG 2017