MARATHON ELECTRIC 145TTFR4040AB Dvh General Motor U707 2/1.5HP 1740/1445RPM R109

( Brand: Marathon Electric ), ( Manufacturer Part Number: 145TTFR4040AB ), ( Model: U707 ), ( Part Type: 5hp Motor ), ( Full Load Amps: 5.6/2.8 ), ( Nema Design Letter: Design B ), ( Ac Frequency Rating: 50/60 Hz ), ( Enclosure Type: Tefc ), ( Base Rpm: 1445 ), ( Shaft Type: Keyed ), ( Shaft Diameter: 7/8 In ), ( Insulation Class: F ), ( Mounting Type: Base-mounted ), ( Service Factor: 1.15 ), ( Ac Phase: Three Phase ), ( Country Of Origin: United States )

Review MARATHON ELECTRIC Dvh 2/1.5hp 1740/1445rpm General Purpose Motor

The **Marathon Electric 145TT-FR4040AB DVH** is a high-performance, durable traction motor designed for demanding industrial, material handling, and mobile equipment applications where reliability, efficiency, and robust performance are paramount. Engineered by General Motors renowned Marathon Electric division, this **2/1.5 horsepower (1.5/1.1 kW) permanent magnet DC motor** delivers consistent power output across a wide operational range, making it an ideal choice for conveyor systems, lift trucks, palletizers, and other heavy-duty machinery where precise control and longevity are critical. With a **1740 RPM (no-load) and 1445 RPM (rated load) speed rating**, this motor provides a balanced blend of torque and speed, ensuring smooth operation while maintaining energy efficiency. The **DVH (Duty High) designation** indicates its suitability for continuous-duty applications, allowing it to operate at peak performance for extended periods without overheating, which is essential in environments where downtime is costly.

Built with **high-quality permanent magnets and a robust armature winding**, the 145TT-FR4040AB is engineered for exceptional durability, resisting wear and tear even under harsh conditions such as dust, moisture, and temperature fluctuations. Its **4040 frame size** offers a compact yet sturdy construction, making it versatile for integration into tight spaces while still accommodating high torque requirements. The motor s **FR (Flame Resistant) rating** ensures compliance with safety standards, reducing fire hazards in industrial settings. Additionally, the **4040AB variant** features a **ball bearing design** for the armature and a **sleeve bearing for the field**, providing smooth operation and minimizing maintenance needs. This motor is also equipped with **high-efficiency brushes and a sealed enclosure**, further enhancing its resistance to contamination and extending its operational lifespan.

For applications requiring precise speed control, the 145TT-FR4040AB pairs seamlessly with Marathon Electric s **variable frequency drives (VFDs)**, allowing for adjustable speed regulation to optimize energy consumption and operational flexibility. Its **low inertia design** enables rapid acceleration and deceleration, reducing wear on connected components and improving overall system responsiveness. Whether deployed in a warehouse automation system, a material handling conveyor, or a specialized industrial vehicle, this motor delivers **reliable, consistent power** with minimal maintenance, making it a cost-effective solution for businesses seeking long-term performance and operational efficiency. Backed by the legacy of General Motors Marathon Electric, this motor embodies a perfect fusion of innovation, durability, and engineering excellence, ensuring dependable service in even the most demanding industrial environments.

### **Pros and Cons of buying a Marathon Electric 145TTFR4040AB (DVH 2/1.5 HP, 1740/1445 RPM, General Motors R109)**

1. **Reliable Brand Reputation** Marathon Electric is a well-established manufacturer of electric motors, known for durability and consistent performance in industrial and commercial applications. Their motors are widely used in conveyor systems, pumps, and other heavy-duty machinery.

2. **High Horsepower for General Use** The 1.5 HP (1125 watts) rating provides sufficient power for many small to medium-duty tasks, such as conveyor belts, small compressors, or light-duty industrial equipment. The dual-voltage (115V/230V) capability makes it versatile for different electrical setups.

3. **DVH (Drip-Proof, Splash-Proof, Guarded) Enclosure** This NEMA 12 enclosure protects the motor from dust, dirt, and splashing water, making it suitable for indoor or mildly outdoor environments where protection against contaminants is necessary.

4. **General Motors R109 Compatibility** The motor is designed to work with General Motors R109 series controllers, ensuring seamless integration if you re already using GM s automation systems. This can simplify wiring and maintenance if you re part of a larger GM-based setup.

5. **Efficient Performance at 1740/1445 RPM** The dual-speed capability (1740 RPM at 60 Hz, 1445 RPM at 50 Hz) makes it adaptable to different frequency power sources, expanding its usability in global or mixed-frequency environments.

6. **Compact and Lightweight Design** The 4040 frame size (4-inch shaft diameter) strikes a balance between power and space efficiency, making it suitable for applications where floor space is limited.

7. **Low Maintenance Requirements** As a standard induction motor, it requires minimal upkeep compared to more complex motor types. Bearings and brushes (if applicable) are typically long-lasting with proper lubrication.

8. **Cost-Effective for Basic Applications** Compared to premium brands, Marathon Electric offers competitive pricing without sacrificing reliability for most standard industrial or commercial uses.

9. **Easy to Replace and Repair** Parts for Marathon motors are widely available, and their design is straightforward, making repairs or replacements easier than with proprietary or custom motors.

10. **Good for Conveyor Systems** If you re using this motor for conveyor belts, its torque characteristics and enclosure rating make it a practical choice for many material-handling applications.

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1. **Not for High-Speed or Precision Applications** At 1.5 HP, this motor is not designed for high-speed machining, CNC equipment, or applications requiring precise speed control. For such tasks, a servo motor or variable frequency drive (VFD) system would be more appropriate.

2. **Limited Overload Capacity** Like most standard induction motors, it has a fixed torque curve and may struggle with sudden high-load demands or frequent starts/stops without proper sizing or additional protection (e.g., thermal overload relays).

3. **No Built-in Speed Control** Without a VFD, speed adjustments are limited to the two fixed RPM settings (1740/1445). For variable speed applications, you ll need to invest in an external controller, adding cost and complexity.

4. **Sensitivity to Voltage Fluctuations** Induction motors like this one can be affected by voltage spikes or drops, which may reduce efficiency or lifespan. A voltage regulator or proper motor protection may be necessary in unstable electrical environments.

5. **Noise and Vibration** Standard induction motors can generate more noise and vibration compared to modern brushless or permanent magnet motors. This may be a consideration in noise-sensitive environments.

6. **Not IP65 or Higher** While the DVH enclosure protects against splashes and dust, it does not offer full waterproofing (like IP65 or IP66). If the motor will be exposed to heavy rain, steam, or corrosive environments, a more robust enclosure (e.g., NEMA 4 or 4X) would be better.

7. **Limited Lifespan Compared to Premium Motors** While durable, Marathon s motors may not last as long as high-end brands (e.g., Baldor, ABB, or Siemens) in extreme conditions or with heavy continuous use. Their lifespan depends heavily on maintenance and operating conditions.

8. **Compatibility Issues with Advanced Systems** If you re integrating this motor into a modern PLC or automation system with advanced diagnostics, you may need additional interfaces or controllers, which could complicate setup.

9. **No Brushless or High-Efficiency Features** This is a standard induction motor, not a brushless DC or permanent magnet motor. It will consume more energy compared to high-efficiency motors in the same power range.

10. **Potential for Higher Long-Term Costs** While the upfront cost is low, if the motor fails prematurely due to poor maintenance or overloading, replacement parts or labor costs could add up over time.

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The **Marathon Electric 145TTFR4040AB (DVH 2/1.5 HP)** is a **solid, cost-effective choice** for basic industrial, commercial, or light-duty applications where reliability and simplicity are prioritized over advanced features. It excels in **conveyor systems, small pumps, or general-purpose machinery** where a durable, low-maintenance motor is needed. However, it is **not ideal for high-precision, high-speed, or variable-speed applications** without additional equipment like a VFD.

If your use case involves **frequent starts/stops, extreme environments, or precise control**, you may need to invest in a more advanced motor or controller. Similarly, if you re operating in **highly corrosive or waterlogged conditions**, a motor with a higher IP rating would be preferable.

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- You need a **reliable, low-cost motor** for standard applications like conveyors, small compressors, or fans.

- Your environment is **indoor or mildly outdoor** with minimal dust/water exposure.

- You re using **General Motors R109 controllers** and need compatibility.

- You don t require **variable speed control** or high precision.

- You need **variable speed control** (consider adding a VFD).

- Your application involves **high-speed machining, heavy loads, or frequent overloads**.

- The motor will be exposed to **extreme weather, corrosive chemicals, or high humidity** (opt for NEMA 4/4X instead).

- You re looking for **long-term energy efficiency** (a high-efficiency or permanent magnet motor may be better).

- For **better efficiency**, look at **Baldor, ABB, or Siemens high-efficiency motors**.

- For **variable speed needs**, pair this motor with a **VFD** (e.g., from Allen-Bradley or Schneider Electric).

- For **harsher environments**, consider a **NEMA 4 or 4X enclosure** motor.

In summary, this motor is a **practical, no-frills solution** for many standard applications but may require upgrades for more demanding tasks. Always ensure proper sizing, protection, and maintenance to maximize its lifespan.

Details:

part #: 145ttfr4040ab prices

• $399.99-$559.99

specifications oelemot:

• brand: Marathon Electric
• mpn: 145ttfr4040ab
• model: U707
• part type: 5hp Motor
• full load amps: 5.6/2.8
• nema design letter: Design B
• ac frequency rating: 50/60 Hz
• enclosure type: Tefc
• base rpm: 1445
• shaft type: Keyed
• shaft diameter: 7/8 In
• insulation class: F
• mounting type: Base-mounted
• service factor: 1.15
• ac phase: Three Phase
• country of origin: United States

shipping oelemot:

• class: Standard
• type: Fixed
• transit: 4-7 Days
• cost: $60.00
• service: Standard

payments oelemot:

• other
• wallet: Apple-pay
• credit card: Visa

general oelemot:

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

returns oelemot:

• method: Money back
• paid by: Buyer
• time: 14 Days
• policy: Returns Accepted

seller oelemot:

• rating: 99.9%
• city: Modesto, California
• # reviews: 7814

offer oelemot:

• sold: 0
• started: May 14, 2026
• availability: In Stock
• options: Ship-to-home
• quantity: 1

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