SEW DFS56L/TF/RH1M/KK

Description

Product Description

[SEW DFS56L/TF/RH1M/KK] is a modular, flange-mounted helical geared motor from SEW-EURODRIVE, a global leader in drive technology. The DFS56L/TF/RH1M/KK integrates a high-efficiency three-phase asynchronous motor with a robust helical gear unit into a single, compact assembly. This specific configuration is engineered for applications requiring reliable, low-speed, high-torque rotary motion. The SEW DFS56L/TF/RH1M/KK is designed for direct mounting onto driven machinery, such as conveyors or mixers, providing a space-saving and maintenance-optimized solution. Its modular design allows for extensive customization, making the DFS56L series a versatile choice for diverse industrial automation tasks.

Technical Parameters and Specifications

(Precise values will be confirmed with the official Data Sheet. The following is a breakdown of the model code.)

• Series: DFS = Helical Geared Motor, flange-mounted (B5).

• Frame Size: 56L. Indicates the physical size of the motor, corresponding to a specific shaft height and power rating (likely in the 0.12 – 0.25 kW range).

• Motor Type: Standard three-phase AC induction motor.

• Gear Unit Design: Helical gears, known for smooth, quiet operation and high efficiency.

• Mounting Position: TF = Flange-mounted, with the gear unit output facing away from the motor.

• Reduction Ratio/Gear Size: RH1M specifies the exact gear reduction ratio (e.g., i=5, 10, 15, etc.) and the size of the gear unit stage. “RH” denotes a specific helical gearbox series, and “1M” defines the ratio.

• Additional Options/Modifications: KK represents a specific variant or additional feature code, which could indicate special surface treatment (e.g., cathodic dip coating), a different terminal box position, a brake, or other factory options.

• Output Speed & Torque: Determined by the motor’s input speed (e.g., 1400 rpm at 50Hz) and the precise RH1M gear ratio.

• Efficiency Class: Motor likely conforms to IE2 or IE3 efficiency standards.

• Protection Class: Typically IP55 or IP65 for dust and water jet protection.

Key Advantages and Features

1. Compact, Integrated Design: The SEW DFS56L/TF/RH1M/KK combines motor and gearbox into one unit, saving space, simplifying mechanical design, and reducing assembly time compared to separate components.

2. High Reliability and Long Service Life: SEW’s precision-engineered helical gears and high-quality motor bearings ensure smooth power transmission, low noise, and exceptional durability even in demanding 24/7 operations.

3. Global Standardization and Availability: As a part of SEW’s modular DR system, components like the DFS56L benefit from global stock availability, ensuring easier maintenance and replacement anywhere in the world.

4. Excellent Efficiency: The helical gear design offers high mechanical efficiency, and the motor is optimized for low energy consumption, contributing to reduced operational costs.

5. Easy Maintenance and Mounting: The flange mounting (B5) and standardized dimensions allow for straightforward integration. Optional features accessible via the KK code (like a terminal box rotatable in 90° steps) further simplify installation.

Application Cases in Industries

• Conveyor Systems: Widely used to drive belt conveyors, roller conveyors, and chain conveyors in packaging, logistics, and material handling facilities.

• Food & Beverage Processing: Powers agitators in mixers, drives for filling lines, and conveyor belts in hygienic environments (often with specific finishes indicated by options like KK).

• Intralogistics & Warehousing: Drives sorting units, lifting platforms, and automated storage and retrieval system (AS/RS) components.

• General Industrial Machinery: Provides motion for pumps, dispensers, rotary tables, and other machinery requiring a reliable, low-speed drive.

Comparison with Competing Products

Compared to a traditional setup of a separate motor and reducer, the SEW DFS56L/TF/RH1M/KK offers superior integration, reduced footprint, and lower total installed cost. Against comparable helical geared motors from competitors like Nord Gear, Bauer, or SIEMENS (Flender), SEW’s key advantages are its unparalleled global service network, the extreme modularity of its DR system allowing for millions of configurations, and a strong reputation for durability. The specific DFS56L/TF/RH1M/KK configuration is optimized for cost-effective performance in its power range.

Selection Suggestions and Precautions

1. Selection: The exact model SEW DFS56L/TF/RH1M/KK should be selected based on the required mechanical parameters: output torque (Nm), output speed (rpm), and mounting configuration. Always use SEW’s selection software (e.g., MOVI-C® Select) to verify the suitability for the application’s load profile and duty cycle.

2. Attention: Decode the KK suffix accurately. Consult SEW documentation to understand the exact optional features it includes (e.g., special paint, shaft sealing, connector type), as these are critical for compatibility and environmental suitability.

3. Important: Ensure proper alignment during mounting to prevent excessive radial or axial loads on the output shaft. Use the correct coupling and follow specified torque values for mounting bolts. The unit must be filled with the correct type and amount of gear oil as per the manual.

4. Motor Protection: The integrated motor requires appropriate electrical protection (e.g., correctly sized motor starter, circuit breaker, and overload protection) based on its nameplate current. For frequent start-stop or reversing duties, consider if an inverter (also from SEW’s MOVITRAC/MOVIMOT series) is required.

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