SEW-EURODRIVE WA20 DRS71S4 Helical-Worm Geared Motor Overview
As a reliable supplier of SEW-EURODRIVE products, your company can offer the WA20/DRS71S4 geared motor, a compact, efficient, and cost-effective solution for light-duty industrial applications. Below is a detailed breakdown of its specifications and features to support your sales and technical discussions with customers.
1. Key Specifications
| Parameter | Details |
| Brand | SEW-EURODRIVE (German engineering excellence in drive technology) |
| Model | WA20 DRS71S4 (Helical-Worm Geared Motor) |
| Item Number | WA20 DRS71S4 SEW-EURODRIVE (SEW catalog reference) |
| Category | Geared AC Motors (Helical-Worm Type) |
| Weight | 8.68 kg (ultra-lightweight design for easy handling and installation) |
| Availability | In Stock (ready for immediate delivery at a competitive price) |
2. Technical & Performance Features
Power & Speed
- Rated Power: 0.37 kW (ideal for low-power, continuous-duty applications)
- Motor Speed (50Hz, 4-Pole): 1500 rpm (standard synchronous speed)
- Output Speed:
Output Speed=141500≈107rpm (due to gear ratio) - Frequency: 50 Hz (optimized for European and other 50Hz markets)
Gearbox
- Gear Ratio (i = n₁/n₂): 14:1 (provides a moderate speed reduction with good torque multiplication)
- Type: Helical-Worm (combines helical gears for smooth operation and worm gears for self-locking capabilities)
Electrical
- Voltage: 220-230VΔ / 380-400VY (dual-voltage capability for flexible star-delta starting)
- AC/DC: AC (standard alternating current operation)
- Energy Efficiency: IE1 (EFF2) (compliant with older efficiency standards; newer models may offer IE2/IE3)
- Brake: No Brake (external braking solutions may be required for stopping/holding applications)
Mechanical & Environmental
- Housing Material: Aluminum (lightweight, corrosion-resistant, and thermally conductive)
- IP Class: IP55 (higher dust and water protection than IP54; suitable for more demanding environments)
- Explosion Safety (ATEX): No Protection (not designed for hazardous areas; ATEX-certified variants may be available)
- Standard: IEC (compliant with international norms for global market acceptance)
3. Key Advantages for Your Customers
- Ultra-Lightweight Design: 8.68 kg weight reduces installation complexity and costs.
- High Torque Density: Helical-worm gearing ensures reliable torque transmission in a compact package.
- Dual-Voltage Capability: Supports 220-230VΔ / 380-400VY, allowing flexibility in power supply configurations.
- SEW-EURODRIVE Quality: German-engineered for durability, precision, and long service life.
- IP55 Protection: Suitable for moderately dusty or wet environments (e.g., outdoor installations, food processing).
- Competitive Pricing: As a supplier, you can offer this model at an attractive price point.
4. Recommended Applications
This geared motor is ideal for:
- Conveyor Systems (light-duty material handling, indexing, and positioning)
- Mixers & Agitators (low-speed, high-torque mixing in small-scale equipment)
- Packaging Machinery (feeding, rotating, and sealing mechanisms)
- Pumps & Fans (where precise speed control and moderate torque are required)
- General Automation (compact drive solutions for conveyors, feeders, and small machinery)
5. Potential Limitations & Solutions
| Limitation | Recommended Solution |
| No Brake | Add an external electromagnetic brake for stopping/holding applications. |
| IE1 Efficiency (EFF2) | Consider IE2/IE3-compliant models (e.g., WA**20 DRS... HF variants) for better energy savings. |
| No ATEX Protection | Opt for ATEX-certified SEW-EURODRIVE models if explosion safety is needed. |
6. Why Choose Our Company as a SEW Supplier?
- Expertise in SEW Products: Our deep knowledge of SEW-EURODRIVE’s offerings ensures customers receive the right geared motor for their needs.
- Technical Support: Provide pre-sales consultations and post-sales troubleshooting.
- Competitive Pricing: Offer this model at a good price with reliable delivery times.
- Custom Solutions: Suggest upgrades (e.g., brakes, higher IP ratings, or IE3 motors) based on customer requirements.
- Stock Availability: Unlike some suppliers, we have brand-new units in stock for immediate delivery.
7. Sales & Marketing Tips
- Highlight SEW’s Reputation: Emphasize SEW-EURODRIVE’s global leadership in drive technology.
- Showcase Application Successes: Share case studies where the WA20/DRS71S4 improved efficiency in conveyors, mixers, etc.
- Offer Bundle Deals: Pair the geared motor with controllers, sensors, or protective enclosures for a complete solution.
- Promote Energy Savings: If upgrading to IE3 models, calculate potential ROI for customers.
- Leverage IP55 Protection: Highlight suitability for outdoor or washdown environments.
Conclusion
The SEW WA20 DRS71S4 is a high-quality, compact, and affordable geared motor suitable for a wide range of light-duty industrial applications. As a reliable supplier, your company can leverage this product’s strengths (lightweight design, IP55 protection, competitive pricing) to meet customer demands for efficient, durable, and flexible drive solutions.
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