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Coating Gear units, motors and gearmotors from SEW-EURODRIVE are painted with"blue/gray"/RAL 7031 machine paint according to DIN 1843 as standard. Special coat-ings are available on request.

3

Exception: Spiroplan
® W..10 DT56 gearmotors have an aluminum housing and aresupplied unpainted as standard.

2

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Surface and cor-rosion protection If required, all gear units, motors and gearmotors from SEW-EURODRIVE can also besupplied with special surface protection for applications in extremely humid and chemi-cally aggressive environments.

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Weights Please note that all weights shown in the catalogs exclude the oil fill for the gear unitsand gearmotors. The weights vary according to gear unit design and gear unit size. Thelubricant fill depends on the mounting position selected, which means that in this case no universally applicable information can be given. Please refer to "Lubricants" in the"Design and Operating Notes" section for recommended lubricant fill quantities depend-ing on the mounting position. The exact weight is given in the order confirmation.

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Air admission and accessibility The gearmotors/brakemotors must be mounted on the driven machine in such a waythat both axially and radially there is enough space left for unimpeded air admission, formaintenance work on the brake and, if required, for the MOVIMOT

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® professional inverter. Pleasealso refer to the notes in the motor dimension sheets.

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Multi-stage gearmotors You can achieve particularly low output speeds by using multi-stage gear units or multi-stage gearmotors. Such a setup requires a winding gear unit or gearmotor on the inputend as a second gear unit.It may be necessary to limit the motor power to match the maximum permitted outputtorque of the gear unit.

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Reduced back-lash design Helical, parallel shaft helical and helical-bevel gear units with reduced backlash areavailable as of gear unit size 37. The circumferential backlash of these gear units is con-siderably less than that of the standard versions so that positioning tasks can be solvedwith great precision. The circumferential backlash is specified in angular minutes [ ’] inthe technical data. The circumferential backlash for the output shaft is specified withoutload (max. 1% of the rated output torque); the gear unit input end is blocked. The dimen-sion drawings for the standard versions are applicable.

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As standard, all shaft-mounted gear units and gearmotors are supplied with NOCO

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NOCO
® fluid for protection against contact corrosion
® fluid, a paste that prevents contact corrosion. Use this paste in accordance with the in-structions in the gear unit operating instructions. It facilitates service and stripping down jobs.NOCO

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® fluid is food grade according to USDA-H1. You can tell that NOCO
® fluid is afood grade oil by the USDA-H1 identification label on its packaging.

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RM gear units, RM gearmotors RM gear units and RM gearmotors are a special type of helical gear units with an ex-tended output suppliers of bearing hub. They were designed especially for agitating applications andallow for high overhung and axial loads and bending moments. The other data are the same as for standard helical gear units and standard helical gearmotors. You can findspecial project planning notes for RM gearmotors in the "Project Planning for GearUnits/RM gear units" section.

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Catalog – DR Gearmotors 01/2008

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