SEW SA37 DRS71S4BE05HF 0.37 kW Helical-Worm Geared Motor gearbox gear ratio 1500

SEW EURODRIVE SA37 DRS71S4 Helical-Worm Geared Motor Specifications Analysis

The SEW SA37 DRS71S4BE05HF is a helical-worm geared motor designed for industrial applications requiring a compact, reliable, and efficient drive solution. Below is a detailed breakdown of its specifications and key features:

1. General Specifications

• Brand: SEW-EURODRIVE (German manufacturer known for high-quality gearmotors and drives)
• Model: SA37 DRS71S4BE05HF
• Category: Geared AC Motors (Helical-Worm Type)
• Availability: 0 pcs (currently out of stock, but replenishment may vary by region/supplier)
• Item Number: SA37/DRS71S4/TF (SEW-EURODRIVE standard catalog reference)

2. Technical Parameters

Power & Speed

• Rated Power: 0.37 kW (suitable for light to medium-duty applications)
• Motor Speed (at 50Hz, 4-Pole): 1500 rpm (standard synchronous speed for 4-pole motors)
• Output Speed:
  • Calculated based on gear ratio:
    $\text{Output Speed}=\genfrac{}{}{0ex}{}{\text{Motor Speed}}{\text{Gear Ratio}}=\genfrac{}{}{0ex}{}{1500}{18}\approx 83\text{rpm}$
• Frequency: 50/60 Hz (dual-frequency operation for global compatibility)

Gearbox

• Gear Ratio (i = n₁/n₂): 18:1 (reduces motor speed while increasing torque)
• Type: Helical-Worm (combines helical gears for efficiency and worm gears for high reduction ratios)

Electrical

• Voltage: 220-230VΔ / 380-400VY (dual-voltage capability for 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 (brakeless design; optional brake add-ons may be available)

Mechanical & Environmental

• Housing Material: Aluminum (lightweight, corrosion-resistant, and thermally conductive)
• IP Class: IP54 (protected against dust ingress and water splashes)
• Explosion Safety (ATEX): No Protection (not suitable for hazardous environments; explosion-proof variants may exist)
• Weight: 12.3 kg (compact and lightweight for easy installation)

Standards Compliance

• IEC Standard: Compliant with International Electrotechnical Commission (IEC) norms for global market acceptance.

3. Key Features & Benefits

• High Torque Density: Helical-worm design provides high reduction ratios in a compact package.
• Smooth Operation: Helical gears reduce noise and vibration compared to spur gears.
• Reliability: SEW-EURODRIVE’s robust construction ensures long service life in industrial settings.
• Flexible Installation: Aluminum housing and IP54 rating allow use in moderate environmental conditions.
• Energy Efficiency: While IE1 is standard, upgrading to IE2/IE3 variants can improve efficiency.

4. Applications

This geared motor is suitable for:

• Conveyor Systems (light-duty material handling)
• Mixers & Agitators (low-speed, high-torque mixing)
• Packaging Machinery (feeding, indexing, and positioning)
• Pumps & Fans (where precise speed control is required)
• General Automation (where compact, reliable drive solutions are needed)

5. Potential Limitations

• No Brake: May require additional braking systems for stopping/holding applications.
• IP54 Rating: Not suitable for wet or dusty environments; higher IP ratings (e.g., IP65/IP66) may be needed for harsh conditions.
• IE1 Efficiency: Older efficiency standard; newer models (IE2/IE3) may offer better energy savings.

6. Recommendations

• For Stock Availability: Check with SEW-EURODRIVE distributors or authorized resellers (current listing shows 0 pcs, but replenishment may vary).
• For Upgrades: Consider IE2/IE3-compliant models for better energy efficiency.
• For Braking: Add an external brake if holding torque is required.
• For Hazardous Environments: Opt for ATEX-certified variants if needed.

Conclusion

The SEW SA37 DRS71S4BE05HF is a reliable, compact, and efficient helical-worm geared motor suitable for light to medium-duty industrial applications. While it may lack some modern features (e.g., higher efficiency, braking), its robust design and SEW-EURODRIVE’s reputation make it a solid choice for standard automation tasks.

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