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2 Product description

2.1 Product features

2.1.1 Operating temperatures Error! B ookmark not d efined .Error! Boo kmark not defin ed .

Gear units and gearmotors from SEW-EURODRIVE can operate in a wide ambient temperature range.

The following table shows the temperature range for the standard oil supplied with each gear unit. Alternate oils are available per the lubricant table (→ 111).

Gear unit Standard Lubricant Temperature range

R

CLP VG220 -15°C to +40°C F

K..7

K..9 CLP PG VG460 -20°C to +60°C

S CLP VG680 0°C to +40°C

W CLP PG (SEW) VG460 -20°C to +40°C

The rated data of the gearmotors specified in this catalog refer to an ambient temperature of +25°C (77°F).

With proper project planning, gearmotors from SEW-EURODRIVE can operate from -40°C to +60°C (-40°F to +140°F). Project planning must consider special operating conditions and use appropriate lubricants and seals. It is especially important for the following gear units:

R, K, F gear units > size 87 with small ratios due to oil churning heat

All S gear units (helical-worm), due to sliding friction – especially with large ratios or low input speeds.

SEW-EURODRIVE will perform this project planning for you. Or, you may visit www.ptpilot.com. PT Pilot gives you a complete quotation and calculates your oil sump temperature based upon your mounting position, ambient temperature, and ratio. Where applicable, PT Pilot adds synthetic oil and FKM seals for proper protection against heat.

Gear unit

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The motors of the DRS..and DRN.. series are designed for use in a temperature range from -20°C to +40°C (-4°F to 104°F).

This expands the standard temperature range required by IEC 60034.

Using the motors outside the above temperature range is possible with some special adjustments. Please contact SEW-EURODRIVE for available options.

INFORMATION

If the motor is controlled by a frequency inverter, you must also consider the project planning notes for the inverter and take into account the thermal effects of inverter operation.

2.1.2 Altitude Error! B ookmark not d efined .Error! Boo kmark not defin ed .

Due to the low air density at high installation altitudes, heat dissipation decreases on the surface of motors and gear units. The rated data listed in the catalog applies to a maximum installation altitude of 3280 feet above sea level. Proper project planning must be considered for higher altitudes to ensure proper cooling (→ 57).

2.1.3 Power and torque

The power and torque ratings refer to mounting position M1 and similar mounting positions in which the input stage is not completely submerged in oil. In addition, the gearmotors are assumed to be standard versions with standard lubrication and under normal ambient conditions.

2.1.4 Speeds

The output speeds shown are based upon the rated motor speed and the gear unit ratio. Please note that the actual output speed depends on the motor load and the line voltage conditions.

2.1.5 Noise Error! B ookmark not d efined .

The noise levels of all SEW-EURODRIVE gear units, motors and gearmotors are well within the maximum permitted noise levels set forth in the VDI guideline 2159 for gear units and IEC/EN 60034 for motors.

2.1.6 Reduced backlash Error! B ookmark not d efined .

Helical (R-series), theSnuggler® helical (F-series) and helical-bevel (K..7 series) gear units with reduced backlash are available in gear size 37 and larger. K..9 helical-bevel gear units are not available with reduced backlash.

The rotational clearance (backlash) of these gear units is considerably less than that of the standard designs; therefore, positioning tasks can be solved with great precision. The rotational clearance is specified in angular minutes and is shown in the "Possible combinations" section within each gear unit chapter (→ 160).

The rotational clearance for the output shaft is specified without load (max. 1% of the rated output torque) with the gear unit input end blocked.

Motors

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2.1.7 Paint colors Error! B ookmark not d efined .

The gear units and motors from SEW-EURODRIVE in USA are coated as follows. The alternate colors shown are available at no extra charge. Special coatings are available upon request.

Color Surface Protection

Standard OS2 OS4

Standard (default) RAL 5001 Green Blue RAL 9007 Metallic Gray

Alternate

RAL 9003 Signal White

RAL 9005 Jet Black

RAL 7031 Blue Gray

RAL 3020 Traffic Red

RAL 9007 Metallic Gray

RAL 9003 Signal White

RAL 9005 Jet Black

RAL 3020 Traffic Red

Exception: SPIROPLAN® W..10DT56 gearmotors have an aluminum housing and are supplied unpainted as standard.

2.1.8 Surface and anti-corrosion protection

If required, all gear units, motors and gearmotors from SEW-EURODRIVE can also be supplied with OS2 or OS4 surface protection for applications in extremely humid and/or chemically aggressive environments (→ 18).

2.1.9 Heat dissipation and accessibility Error! B ookmark not d efined .Error! Boo kmark not defin ed .

Make sure to maintain adequate distance from heat-sensitive components when installing gearmotors/geared brakemotors to the driven machine. The distance is necessary for air circulation/heat dissipation, and for maintenance of the brake or MOVIMOT® inverter, if installed.

2.1.10 Weights

Please note that all weight specifications in the catalogs apply to gear units and gearmotors without lubricant. The weights vary according to gear unit design and size. The lubricant volume depends on the mounting position. Suggested values for lubricant fill quantities based on the mounting position are provided in the chapter "Oil fill quantities" (→ 113). The exact weight is shown on the order confirmation.

2.1.11 Compound gearmotors

Particularly low output speeds are possible by using compound (multi-stage) gear units (ex: K87R57). These units contain an additional helical gear unit on the input in order to achieve much higher ratios than those in a single gear unit.

However, it may be necessary to limit the motor power or to provide torque overload protection in order to ensure that the maximum permissible output torque of the gear unit is not exceeded.

2.1.12 Shaft diameters

All gear units are available with either an inch or a metric diameter output shaft. In addition, several diameters are available for each output shaft at no extra charge. See “Output shaft sizes” at the end of each dimension section.

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2.1.13 RM gearmotors

RM gearmotors are a special type of helical gear unit with an extended output bearing hub. They are designed especially for agitating applications to allow for high overhung loads, axial loads, and bending moments. You can find special project planning notes for RM gearmotors (→ 60).

2.1.14 SPIROPLAN® gearmotors

SPIROPLAN® (W-series) are robust right-angle gear units with either single or two stage gearing. Unlike the helical-worm gear units (S-series) that use both bronze and metal gears with sliding friction, the SPIROPLAN® units use only steel gears with a special meshing pattern that incorporates both sliding and rolling friction for greater efficiency. In addition, the housing is aluminum. Therefore, SPIROPLAN® gearmotors are wear-free, lightweight, and compact. The wear-free gearing and the life-long lubrication provide a long period of maintenance-free operation.

For maximum mounting versatility, the spacing of the holes on the feet is the same on all three sides. In addition, the shaft height remains the same regardless of the side upon which the unit is mounted. Also, two different flange diameters are available for each unit. As an option, SPIROPLAN® gearmotors can be equipped with a torque arm.

2.1.15 Brakemotors Error! B ookmark not d efined .Error! Boo kmark not defin ed .

Motors and gearmotors can be supplied with an optional integrated mechanical brake. The SEW-EURODRIVE brake is an electromagnetic disk brake with a DC coil that releases electrically. Braking occurs via a combination of adjustable spring forces. Due to its operating principle, the brake is automatically applied during a power failure, meeting basic safety requirements. The brake can be released mechanically if equipped with manual brake release that is available as either an adjustable setscrew or as a hand lever with automatic reset. The brake is controlled via a rectifier that is installed in either the motor conduit box or inside the control cabinet.

The brake bearing endshield is a part of both the motor and the brake, yielding an integral design and a very compact brakemotor.

2.1.16 Motor adapters Error! B ookmark not d efined .Error! Boo kmark not defin ed .Error! Boo kmark not d efin ed.Erro r! Boo kmark not d efin ed.

The following adapters are available between the motor and input of gear unit:

– For mounting IEC or NEMA motors with the option of a backstop

– For mounting servomotors with a square flange

– With torque limiting safety couplings and speed or slip monitor

– With hydraulic start-up coupling and the option of a disk brake or backstop

2.1.17 Swing base Error! B ookmark not d efined .

A swing base is a drive unit consisting of helical-bevel gear unit, hydraulic centrifugal coupling and motor. The complete arrangement is mounted to a rigid mounting rail. Swing bases are available with the following optional accessories:

• Torque arm

• Mechanical thermal monitoring unit

• Contactless thermal monitoring unit

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2.1.18 International markets Error! B ookmark not d efined .Error! Boo kmark not defin ed .

Market access is contingent to local approvals in many countries. Additional laws, market conventions, and regulations must be followed. SEW-EURODRIVE products contain logos on the main nameplate or motor as a certificate of compliance.

The following countries have special requirements for motors.

Canada Mark Explanation

SEW-EURODRIVE motors for Canada comply with the general motor standards and, if required, the efficiency requirements of the Canadian Energy Efficiency Regulations of 2011 (EER2011). The CSA-certified explosion-proof motors of the type EDRN.. contain the required CSA logo on the nameplate.

USA Mark Explanation

Motors for the USA comply with the requirements stipulated by Underwriters Laboratories as a UL Recognized Component. Thus, they contain the UR label.

The motors that fulfill the efficiency requirements according to CFR 431 have the energy efficiency logo of the Department of Energy (DoE).

The explosion-proof motors of the type EDRN.. are CSA certified. The CSA logo indicates that the motors meet the Canadian and American standards.

South Korea Mark Explanation

Korea accepts motors that are based on the IEC standard 60034. Motors that require an efficiency level must be registered at the Korean KEMCO (Korea Energy Motors Corporation) institution and get the Korean Energy Efficiency label (KEL).

Explosion-proof motors are also certified by the "Korea Occupational Safety and Health Agency (KOSHA)". They are not shown in this catalog.

Brazil Mark Explanation

SEW motors for the Brazilian market are registered at ABNT. They have the PROCEL logo if they fulfill the efficiency requirements.

Explosion-proof motors have an additional certification based on the IECEx agreement. They are not shown in this catalog.

NBR - 17094-1:2008

2 Product descriptionCorrosion and surface protection

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2.2 Corrosion and surface protection

2.2.1 General information

For motor and gear unit operation in aggressive environments, SEW-EURODRIVE offers the following options:

• Corrosion protection for motors

• Surface protection OS2 and OS4 for motors and gear units

For motors, the best protection is a combination of corrosion protection and OS surface protection. For the output shaft, additional options are available.

2.2.2 Corrosion protection

Corrosion protection for motors contains the following procedures:

• All retaining screws that are loosened during operation are made of stainless steel.

• Stainless steel nameplates.

• Various motor parts are coated with a finishing varnish.

• The flange contact surfaces and shaft ends are treated with temporary rust preventive.

• Additional procedures are performed for brakemotors.

INFORMATION

The following motor options do not receive additional corrosion protection. However, they can be ordered with a gearmotor that does receive corrosion protection.

• /V forced cooling fan

• Shaft-centered encoders /ES, /ES7, /EG, /EG7, /EV7, /AS, /AS7, /AG, /AG7, /AV7

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2.2.3 OS surface protection

Instead of the standard surface protection, motors and gear units are available with OS2 or OS4 surface protection as an option. The protection layers shown below reflect the current methods in the USA.

OS Type1) 2)

Protection layers Ambient conditions Comments/sample

applications

OSG • Dip primer

• Acrylic primer

• N/A

• Primer only – not a finish coat

• Customer to supply additional paint coating depending on application.

STD

• Dip primer

• Acrylic top coat

Indoors – clean atmosphere, heated buildings

Similar to corrosivity category3):

• C1 (negligible)

• Machines and systems in the automobile industry

• Transport systems in logistics

• Conveyor belts at airports

OS2

• Dip Primer

• Acrylic primer

• Acrylic top coat + UV protection

Indoors – high humidity, condensation, or splashing water

Outdoors – direct weathering and low pollution

According to corrosivity category3):

• C3 (moderate)

• Sports halls, depots

• Applications in amusement parks

• Applications in gravel plants

• Systems in nuclear power plants

• Wastewater treatment plants

OS4

• Dip Primer

• Epoxy primer (2 layers)

• Polyurethane top coat

• Polyurethane clear coat + UV protection

Indoors – pressure spray, chemical washdown, brine solutions, regular acidic or caustic wet cleaning

Outdoors – high humidity, high pollution, severe atmospheric or chemical contamination, salinity

According to corrosivity category3):

• C5-1 (very high)

• Breweries

• Beverage industry

• Food processing

• Chemical plants

• Dairies

• Coastal areas

1) Motors/brakemotors in degree of protection IP56 or IP66 are only available with OS2 or OS4 surface protection.

2) Gearmotors with OS2 or OS4 surface protection are offered only in combination with corrosion protection.

3) According to DIN EN ISO 12944-2, classification of ambient conditions

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2.2.4 Seal and shaft protection

Gearmotor output shafts can be supplied with the options below for operation in severe environmental pollution or in particularly demanding applications.

Feature Design Suitable for:

FKM oil seal High quality material Drives subject to chemicals or high temperature.

PTFE oil seal High quality material Drives subject to chemicals

Stainless steel output shaft

Surface protection through non-corrosive material. All TorqLOC shafts and many keyed hollow shafts are available in stainless steel.

Heavy washdown or demanding applications where anti-corrosion is mandatory.

2.2.5 NOCO® fluid

As standard, SEW-EURODRIVE supplies NOCO® fluid corrosion protection and lubricant with every hollow shaft gear unit. NOCO® fluid should be used when installing hollow shaft gear units to prevent contact corrosion and to make it easier to disassemble the drive at a later time. NOCO® fluid can also be used to protect machined metal surfaces that do not have corrosion protection, such as output shafts or flanges. You can order NOCO® fluid in the quantities listed below.

Batch size Packaging type Part number

5.5 g Sachet 09107819

100 g Tube 03253147

1 kg Tub 09107827

NOCO® fluid is a food grade substance according to NSF-H1. It has a corresponding NSF-H1 label on the packaging.

2.3 Extended storage Error! B ookmark not d efined .Error! Boo kmark not defin ed .

SEW-EURODRIVE recommends the "extended storage" option for storage periods lasting longer than 9 months. The gear unit oil is mixed with a VCI (volatile corrosion inhibitors) anti-corrosion agent. Please note that VCI is effective only in a temperature range of -25°C to +50°C. The flange contact surfaces and output shafts are also treated with an anti-corrosion agent. As standard, the gear unit with "extended storage" option is supplied with OS2 surface protection. However, OS4 is available as an alternative.

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Observe the storage conditions specified in the following table:

Climate zone Packaging1) Storage2) Storage duration

Temperate

(Europe, USA, Canada, China and Russia, excluding tropical zones)

• Packed in containers

• With desiccant and moisture indicator sealed in the plastic wrap

• Roofed

• Protected against rain and snow

• Shock-free

Up to 3 years with regular checks of the packaging and moisture indicator (humidity < 50%)

Open

• Under roof and enclosed at constant temperature between 5°C to 50°C

• No sudden temperature variations

• Relative humidity < 50%

• Controlled ventilation with filter (free from dust and dirt)

• No aggressive vapors

• No shocks

2 years or more with regular inspections

• Check for cleanliness

• Check for mechanical damage

• Check for corrosion

Tropical

(Asia, Africa, Central and South America, Australia, New Zealand, excluding temperate zones)

• Packed in containers

• With desiccant and moisture indicator sealed in the plastic wrap

• Protected against insect damage and mildew by chemical treatment

• Roofed

• Protected against rain and snow

• Shock-free

Up to 3 years with regular checks of the packaging and moisture indicator (humidity < 50%)

Open

• Under roof and enclosed at constant temperature between 5°C to 50°C

• No sudden temperature variations

• Relative humidity < 50%

• Controlled ventilation with filter (free from dust and dirt)

• No aggressive vapors

• No shocks

• Protected against insect damage

2 years or more with regular inspections

• Check for cleanliness

• Check for mechanical damage

• Check for corrosion

1) The packaging must be carried out by an experienced company using the packaging materials that have been explicitly

specified for the particular application.

2) SEW-EURODRIVE recommends storing the gear units in the same orientation as the mtg position on the nameplate.

2 Product descriptionOil aging monitor: DUO10A

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INFORMATION

To prevent the VCI anti-corrosion agent from evaporating, the gear units with "extended storage" must remain tightly sealed until startup.

The gear units come with the oil fill according to the specified mounting position (M1 – M6). Always check the oil level before placing the gear unit into operation.

2.4 Oil aging monitor: DUO10A Error! B ookmark not d efined .

The oil condition monitoring option consists of a temperature sensor and the evaluation unit. Service life curves for oils supplied by SEW-EURODRIVE are stored in the evaluation unit. In addition, SEW-EURODRIVE can customize any other oil grade in the diagnostic unit. During operation, the evaluation unit uses the oil temperature to continuously calculate the remaining service life in days until the next oil change. The remaining life is displayed directly on the evaluation unit. When the service life is expired, a binary signal can be sent to a higher-level system and evaluated.

Using the DUO10A diagnostic unit, the system operator no longer has to replace the oil within predefined intervals, but can adapt the replacement interval individually to the actual load. The benefits are reduced maintenance costs and increased uptime.

For more information, (→ 157).

2.5 Oil expansion tank Error! B ookmark not d efined .

The oil expansion tank allows the lubricant or air space of the gear unit to expand. This means no lubricant can escape the breather valve at high operating temperatures.

SEW-EURODRIVE recommends using an oil expansion tank for gear units and gearmotors in M4 mounting position and for input speeds > 2000 rpm.

The following figure shows the oil expansion tank of a gearmotor.

4979181323

The oil expansion tank is delivered as assembly kit for mounting onto the gearmotor. In case of limited space or of gear units without motor, the oil expansion tank can also be mounted to nearby machine parts.