Gearmotors \ Industrial Gear Units \ Drive Electronics \ Drive Automation \ Services

We have somethingagainst corrosion:Surface and Corrosion Protection

2 Surface and Corrosion Protection

Our standard protection is …tailored precisely to your application

SEW-EURODRIVE gearmotors come equipped with a standard protection against all common corrosive elements found

in an industrial environment, such as moisture, oil, dirt or chemicals. It is possible to operate these motors even in

extreme weather conditions due to a number of specific, additional treatments and the use of special materials. The

synergy of internal and external preventive measures offers reliable protection for SEW-EURODRIVE drives.

You establish the sound basis for many years of reliable service from the moment you place an order with

SEW-EURODRIVE: by selecting a combination of optional SEW-EURODRIVE protective coatings, particularly geared to

meet your specific needs.

Required protection SEW-EURODRIVE solutionsStandard:

Internal treatment and KS (= corrosion protection)standardized parts

Top coating OS1-4 (= exterior surface protection)

Anti-corrosion agent NOCO®-FLUID, food grade quality according to USDA-H1

Optional:

Protected output shafts Kanisil coating, Made of stainless steel

Special protection design for output shafts

Measure Protection principle Use it

NOCO®-Fluid Anti-corrosion agent – Hollow shaft designs to prevent contact corrosion

– Belt pulleys, chain sprockets or coupling halves for easier assembly and to prevent friction corrosion

– To protect free machined surfaces that are not or no longer protected from corrosion (shaft ends, flange...)

Kanisil coating on output Coating surface of oil Heavily polluted environment, maybe in shaft extension seal with Silicon connection with Viton oil seal

Output shaft made of Premium quality material Particularly demanding applicationsstainless steel

DAS80 Aseptic gearmotor with OS4 top coating

KS: Treatment packages for internal treatment andstandard parts

OS1-4: Treatment packages for top coating

Brakes withpressure platemade of non-corrosivematerials

Rust-proof breathervalves

Non-corrosive re-taining components

Special interiorsurface coating

Rustproof breathervalves

Special interior surface coating

RS bearing for IP56

Optional outputshafts made

of stainless steel

NOCO®-FLUID,the contact

corrosion inhibitor

Optional Kanisilcoating on outputshaft end (in thearea of the radial oilseal seat)

1 x two-component varnish

2 x two-component base coat

1 x dip primer

Different layers of varnish on a

helical bevel gear unit with OS2

coating.

Special interiorsurface coating

4

Products SEW-EURODRIVE solutions

All – Regular, detailed processing– Breather valves usually made of rustproof material – All processed flange and connection surfaces as well as shaft extensions coated with rust preventing agent

Standard treatment

Products SEW-EURODRIVE solutions

Motors In addition:– any fastening components regularly opened for operation made of rustproof material – rustproof nameplates– internal coating with special enamel

IP56 Motors – Special bearing design (RS on drive-end, 2RS on non-drive end)– Additional condensation drain hole

Brakes and – Addition fastening of rubber sealing collars with clamping straps. Pressure plates of non-corrosive materialbackstops – Explosion-proof BC and BD brakes, as well as backstops treated with special finishing varnish

Variable-speed In addition:gearmotors – all non-processed internal surfaces covered with special varnishVARIMOT® – gas-nitrided variable pulleys in VARIBLOC®

VARIBLOC® – hard chromium plated drive disc in VARIMOT®

– fastening parts made of rustproof material

KS treatment

Dip primer

*(NDFT = nominal dry film thickness) according to DIN EN ISO 12 944-5

Single-component varnish(water based)

Two-component base coat (polyurethane)

Two-component base coat(epoxy combination)

Two-component varnish(polyurethane)

Top coating

Description

Composition of layers

Nominal depthof layer approx.µm (NDFT)*

Standard

1 x dip primer1 x single-component

varnish

70

OS1

1 x dip primer1 x two-component

base coat1 x two-component

varnish

150

OS2

1 x dip primer2 x two-component

base coat1 x two-component

varnish

210

OS3

1 x dip primer2 x two-component

base coat2 x two-component

varnish

270

OS4

1 x dip primer2 x two-component

base coat2 x two-component

varnish

320

Z

Before coating Fillingof all contour recesseswith elastic rubber

–

–

5

** according to DIN EN ISO 12 944-2 ** optional filling of the contour recesses; additional composition of OS1/2/3/4 for the prevention of accumulation of dirt and

corrosion-prone contour recesses under particularly adverse operating conditions

Gearmotor application

Standard environmental conditions

– Indoor installation

– Heated buildings with neutral atmospheres

– Relative air humidity max. 90 %

– Surface temperatures up to 120 °C

– Corrosion category C1* (negligible)

Limited environmental impact:

– Indoor use

– Buildings without heating in which condensation

can occur

– Atmospheres with little contamination, mostly farms

– Relative air humidity max. 95 %

– Surface temperatures up to 120 °C

– Corrosion category C2* (low)

Medium environmental impact:

– Indoor and outdoor use (e. g. food processing, chemical

industry, power plants)

– Production sites with high humidity and some air pollution

– City and industrial atmosphere, moderate pollution with

sulphur dioxide

– Relative air humidity max. 100 %

– Surface temperatures up to 120 °C

– Corrosion category C3* (moderate)

High environmental impact:

– Indoor and outdoor use (e. g. sewer treatment plant, electro-

plating shop, chemical plants, public pools, boat houses

above seawater)

– Industrial areas and coastal areas with moderate

exposure to salt

– Relative air humidity max. 100 %

– Surface temperatures up to 120 °C

– Corrosion category C4* (high)

Very high environmental impact:

– Buildings or areas with almost constant condensation and

heavy contamination (malt factory and aseptic, aggressive

detergents) as well as industrial areas with high levels of

humidity and aggressive atmosphere

– Relative air humidity max. 100 %

– Surface temperatures up to 120 °C

– Corrosion category C5-I* (very high)

Interior surface treatment

Standard treatment

KS-treatment

Varnish coating

Standard

OS1 Z**

OS2

OS3

OS4

For every application the ideal protection treatment package

SEW-EURODRIVEDriving the world

Gearmotors \ Industrial Gear Units \ Drive Electronics \ Drive Automation \ Services

With people who think fast and develop the future with you.

How we’re driving the world

With drives and controlsthat automatically improve your productivity.

With comprehensiveknowledge in virtuallyevery branch ofindustry today.

With uncompromisingquality that reduces thecost and complexity ofdaily operations.

With a global presencethat offers responsiveand reliable solutions.Anywhere.

With a worldwideservice network that isalways close at hand.

With innovativetechnology that solvestomorrow’s problemstoday.

With online informationand software updates, viathe Internet, availablearound the clock.

SEW-EURODRIVE is right there for you:

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SEW-EURODRIVE GmbH & Co KGP.O.Box 30 23 · D-76642 Bruchsal/GermanyPhone +49 7251 75-0 · Fax +49 7251 75-1970sew@sew-eurodrive.com

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