BAUER 4A6-381M-S-AS-M Dnf Ac Motor 4A6-381M-S-AS/M 3.7KW 1120RPM 460V-AC 3PH

( Brand: Bauer ), ( Manufacturer Part Number: 4A6-381M-S-AS/M ), ( Part Type: Ac Motor ), ( Model Number: Dnf 4a6-381m-s-as/m ), ( Power: 3.7 Kw ), ( Rpm: 1120 Rpm ), ( Voltage: 460 V-ac ), ( Phase: 3ph ), ( Reference Sku: 1761936 ), ( Product Condition: Used Excellent )

Review BAUER 4a6-381m-s-as/m Dnf Ac Motor 3.7kw 1120rpm 460v-ac 3ph

The **Bauer 4A6-381M-S-AS/M DNf AC Motor** is a robust, high-performance electric motor engineered for demanding industrial applications where reliability, efficiency, and durability are paramount. Part of Bauer s renowned **DNf series**, this **3.7 kW (5 horsepower) three-phase asynchronous motor** delivers consistent power output at a nominal speed of **1,120 RPM**, making it ideal for conveyor systems, pumps, compressors, and other heavy-duty machinery where precise torque and smooth operation are critical. Designed for **460V AC three-phase power supply**, this motor ensures optimal performance across a wide range of industrial environments, from manufacturing plants to material handling facilities.

Constructed with **high-grade materials and precision engineering**, the 4A6-381M-S-AS/M features a **cast iron end shields and housing**, providing exceptional strength and resistance to mechanical stress, vibration, and thermal fluctuations. Its **drip-proof (IP44) enclosure** ensures protection against dust, splashing water, and solid particles, making it suitable for both indoor and outdoor applications where exposure to contaminants is a concern. The motor s **bearing system** incorporates **high-quality ball or roller bearings**, depending on the specific variant, which are sealed to minimize maintenance requirements while maximizing operational longevity.

One of the standout features of this motor is its **energy-efficient design**, incorporating **high-efficiency windings and optimized magnetic flux**, which reduces energy consumption without compromising performance. The **class F insulation** ensures superior thermal resistance, allowing the motor to operate at elevated temperatures without degradation, thus extending its service life. Additionally, the **standard NEMA 4 mounting configuration** provides flexibility in integration with various types of machinery, while the **squirrel-cage rotor** ensures robust starting torque and stable operation under varying load conditions.

For enhanced functionality, the Bauer 4A6-381M-S-AS/M is equipped with **built-in thermal protection**, automatically shutting down in the event of overheating to prevent damage. This feature, combined with the motor s **low noise and vibration levels**, contributes to a quieter, more stable operational environment. The **S-AS/M designation** indicates a **single-speed, squirrel-cage induction motor with a specific frame size (381)**, which aligns with Bauer s standardized dimensions for easy replacement and compatibility with existing systems.

Whether deployed in **continuous duty (S1) or intermittent service (S2/S3)**, this motor delivers dependable performance with minimal downtime. Its **compact yet sturdy frame** allows for efficient space utilization in tight industrial layouts, while the **sealed shaft** prevents ingress of foreign particles, further enhancing reliability. With a **lifetime warranty on bearings** and Bauer s reputation for superior craftsmanship, this motor represents a cost-effective investment for industries seeking a balance of performance, durability, and operational efficiency.

In summary, the **Bauer 4A6-381M-S-AS/M DNf AC Motor** is a versatile, high-performance electric motor designed to meet the rigorous demands of modern industrial applications. Its combination of **robust construction, energy efficiency, and protective features** makes it a trusted choice for engineers and facility managers looking for a motor that delivers consistent power, minimal maintenance, and long-term reliability.

### **Pros and Cons of buying a Bauer 4A6-381M-S-AS/DNF AC Motor (3.7 kW, 1120 RPM, 460V, 3-Phase)**

#### **Pros**

1. **High Efficiency and Performance** The motor is designed for industrial applications, offering reliable power output (3.7 kW) at 1120 RPM, suitable for pumps, compressors, and conveyor systems. Its efficiency ensures lower energy consumption compared to older models.

2. **Durable Construction** Bauer motors are known for robust build quality, with sealed bearings and corrosion-resistant materials, making them ideal for harsh environments such as manufacturing plants, water treatment facilities, or outdoor applications.

3. **Compatibility with Industrial Systems** The 460V, 3-phase specification aligns with standard industrial power grids, reducing compatibility issues in factories or commercial settings.

4. **Maintenance-Friendly Design** The motor s construction allows for easier access to components, reducing downtime for servicing. Some models include features like thermal protection to prevent overheating.

5. **Long Lifespan** With proper maintenance, Bauer motors are designed to operate for decades, offering a strong return on investment over time.

6. **Global Availability and Support** Bauer is a well-established brand with a wide distribution network, ensuring easy access to spare parts and technical support.

7. **Smooth Operation** The 1120 RPM speed is suitable for applications requiring moderate to high torque without excessive wear, improving overall system reliability.

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#### **Cons**

1. **Higher Upfront Cost** Compared to generic or lower-end motors, Bauer s industrial-grade motors come at a premium price, which may be a barrier for small businesses or budget-conscious buyers.

2. **Specialized Maintenance Requirements** While durable, Bauer motors may require trained technicians for servicing, increasing maintenance costs if in-house expertise is lacking.

3. **Weight and Installation Complexity** Industrial motors are heavier and bulkier than standard models, requiring proper mounting and electrical setup, which may add to installation labor costs.

4. **Potential Overkill for Light-Duty Use** If the motor is being used in a low-torque application (e.g., small machinery with minimal load), its robust design may be unnecessary, leading to wasted investment.

5. **Dependence on 3-Phase Power** The motor requires a 3-phase electrical supply, which may not be available in all locations (e.g., residential areas or remote sites), limiting flexibility.

6. **Limited Customization Options** Unlike some OEM motors, Bauer s standard models may not offer extensive customization for niche applications, requiring additional modifications.

7. **Potential Lead Times** Due to its industrial nature, ordering may involve longer lead times compared to off-the-shelf consumer-grade motors.

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### **Conclusion**

The **Bauer 4A6-381M-S-AS/DNF AC motor** is an excellent choice for **industrial, commercial, or heavy-duty applications** where reliability, efficiency, and longevity are critical. Its strengths in performance, durability, and compatibility make it ideal for **pumps, compressors, conveyors, and other high-demand systems**. However, the **higher cost, specialized maintenance needs, and requirement for 3-phase power** may not justify its purchase for **light-duty or budget-sensitive applications**.

If your application demands **consistent power delivery, minimal downtime, and a long service life**, this motor is a strong recommendation. For **small-scale or low-load uses**, a more affordable generic motor might suffice.

### **Final Recommendation**

- You need a **high-performance, long-lasting motor** for industrial or commercial use.

- Your application requires **3-phase power and moderate to high torque**.

- You can justify the **higher upfront cost** with long-term savings on energy and maintenance.

- Your budget is tight, and a **lower-cost alternative** meets your needs.

- Your application is **light-duty** or does not require industrial-grade durability.

- You lack access to **3-phase power** or trained maintenance personnel.

For most **serious industrial users**, the Bauer motor represents a **solid investment** in reliability and efficiency.

Details:

Model Number:DNF 4A6-381M-S-AS/M. Rotary Lobe Blowers. Circuit Breakers. Roller Chains.

Safety and Security. Motor Drives. Motor Starters.

part #: 4a6381msas price

• $800.00

specifications oelemot:

• brand: Bauer
• mpn: 4a6-381m-s-as/m
• part type: Ac Motor
• model number: Dnf 4a6-381m-s-as/m
• power: 3.7 Kw
• rpm: 1120 Rpm
• voltage: 460 V-ac
• phase: 3ph
• reference sku: 1761936
• product condition: Used Excellent

payments oelemot:

• wallet: Apple-pay
• other
• credit card: Diners-club

seller oelemot:

• rating: 100.0%
• city: Delta, Ohio
• # reviews: 127220

returns oelemot:

• method: Money back
• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

shipping oelemot:

offer oelemot:

• availability: In Stock
• quantity: 1
• best offers: True
• options: Ship-to-home
• started: April 17, 2026
• sold: 0

general oelemot:

• condition: Used
• Industrial Automation Motion Controls > Electric Motors > General Purpose Motors

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