SIEMENS
12/3
Siemens MD 50.1 · 2015
General options
Surface treatment and preservation
12
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Surface treatment
We offer five high-quality paint systems in various colors to pro-
tect drives against corrosion and external environmental effects.
Our corrosion protection system is designed in accordance
with the corrosivity categories of EN ISO 12944-2.
Geared motors, size 49 and higher, are painted in RAL 7016
(anthracite gray) to corrosivity category C1 as standard. This en-
sures that they are protected against corrosion for indoors use.
Geared motors, sizes 19 to 39 with an aluminum housing
are supplied unpainted as standard.
All of the unpainted parts of the products are treated with
corrosion protection for 6 months.
Surface pretreatment
For especially demanding applications, the drives can also be
pretreated in order to achieve a uniform paint coat thickness also
at hidden locations or those difficult to access.
Order code:
Special pretreatment
L19
Corrosivity
category
Paint system
Description
Order
code
Primer
Intermediate
coat
Top
coat
Surface protection
Aluminum gearbox housing
1)
C1/unpainted
(standard)
-
-
-
• Indoor installation
• Heated buildings with neutral atmospheres
• Resistant to greases, conditionally resistant to mineral oils,
aliphatic solvents
• Standard paint
L00
C1
Normal
environmental
stress
-
-
1-component
hydro paint
L02
Cast iron gearbox housing
2)
C1
Normal
environmental
stress
-
-
1-component
hydro paint
• Indoor installation
• Heated buildings with neutral atmospheres
• Resistant to greases, conditionally resistant to mineral oils,
aliphatic solvents
• Standard paint
L02
All geared motors
C2
Low
environmental
stress
2-component
polyurethane
-
2-component
polyurethane
• Indoor and outdoor installation
• Unheated buildings with condensation, production areas
with low humidity, e.g. warehouses and sports facilities
• Atmospheres with little pollution, rural areas
• Resistant to greases, mineral oils and sulfuric acid (10 %),
caustic soda (10 %) and conditionally resistant to
aliphatic solvents
L03
C3
Average
environmental
stress
2-component
polyurethane
-
2-component
polyurethane
• Indoor and outdoor installation
• Production areas with high humidity and some air pollution,
e.g. food production areas, dairies, laundries and breweries
• Urban and industrial atmospheres, moderate contamination
from sulfur dioxide, coastal areas with low salt levels
• Resistant to greases, mineral oils, aliphatic solvents,
sulfuric acid (10 %), caustic soda (10 %)
L04
C4
High
environmental
stress
2-component
epoxy zinc
phosphate
-
2-component
polyurethane
• Indoor and outdoor installation
• Chemical plants, swimming pools, wastewater treatment
plants, electroplating shops, and boathouses above seawater
• Industrial areas and coastal areas with moderate salt levels
• Resistant to greases, mineral oils, aliphatic solvents,
sulfuric acid (10 %), caustic soda (10 %)
L20
C5
Very high
environmental
stress
2-component
epoxy
zinc phosphate
2-component
epoxy
iron mica
2-component
polyurethane
• Indoor and outdoor installation
• Buildings/areas with almost constant condensation and high
degrees of pollution, e.g. malt factories and aseptic areas
• Industrial areas with high humidity and aggressive atmo-
sphere, coastal areas and offshore environments with
high salt levels
• Resistant to greases, mineral oils, aliphatic solvents,
sulfuric acid (10 %), caustic soda (20 %)
L05
1)
Helical gearboxes D/Z19 to D/Z39, parallel shaft gearboxes F29 and bevel gearboxes B29 and B39
2)
The bevel gearbox B49 is supplied painted
© Siemens AG 2015