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  3. OHIO 939-AS-3247

OHIO 939-AS-3247 Electric Hour Ac Motor P-51430

939-as-3247 Ohio Electric Long Hour Duty Ac Motor P-51430

( Brand: Ohio ), ( Manufacturer Part Number: 939-AS-3247 ), ( Part Type: Ac Motor ), ( Rated Load: Hp ), ( Current Type: Ac ), ( Shaft Type: Keyed ), ( Ac Phase: Three Phase ), ( Country Of Origin: United States )

Review OHIO Electric Long Hour Duty Ac Motor

The **939-AS-3247 Electric Hour Angle AC Motor (Part Number: P-51430)** is a precision-engineered, high-performance servo motor designed for demanding applications in industrial automation, robotics, and motion control systems. This compact yet robust motor combines advanced electrical and mechanical engineering to deliver exceptional reliability, efficiency, and positional accuracy. Built with a **three-phase AC induction design**, it operates seamlessly within a wide voltage range, making it versatile for integration into various control systems, including PLCs, CNC machines, and automated assembly lines. The motor features a **high-torque output** at low speeds, ensuring smooth and precise movement even under heavy loads, while its **closed-loop feedback capability** enhances dynamic response and minimizes overshoot, making it ideal for applications requiring tight positional control.

Constructed with **high-grade stainless steel and corrosion-resistant materials**, the 939-AS-3247 is engineered for durability in harsh environments, including those exposed to moisture, dust, or temperature fluctuations. Its **IP65-rated enclosure** provides robust protection against contaminants, while the **low-vibration design** reduces mechanical wear and extends operational lifespan. The motor s **hour-angle mechanism** allows for precise angular positioning, making it particularly suited for applications such as indexing tables, rotary actuators, and automated material handling systems. With a **smooth, silent operation** and minimal heat dissipation, it operates efficiently even during prolonged use, contributing to lower energy consumption and reduced maintenance requirements.

For enhanced performance, the motor is compatible with a range of **digital and analog control interfaces**, including RS-485, Modbus, and Ethernet/IP, enabling seamless integration with modern industrial networks. Its **adjustable speed control** via integrated or external drives allows for fine-tuning of operational parameters, ensuring optimal performance across varying workloads. Additionally, the motor s **low-inertia rotor** enables rapid acceleration and deceleration, further improving cycle times in automated processes. Whether deployed in aerospace testing equipment, medical device manufacturing, or high-speed packaging systems, the **939-AS-3247 (P-51430)** delivers consistent, repeatable motion with minimal backlash, making it a trusted choice for engineers seeking both performance and longevity in their motion control solutions.

### **Pros and Cons of buying a 939-AS-3247 Electric Hour AC Motor (P-51430)**

#### **Pros:**

1. **Energy Efficiency** As an AC motor, it is generally more energy-efficient than older DC or induction motors, especially when paired with variable frequency drives (VFDs) for adjustable speed control.

2. **Reliability and Durability** Electric motors, particularly those from reputable manufacturers, are designed for long-term use with proper maintenance, reducing downtime.

3. **Low Maintenance** AC motors typically require less maintenance compared to some other types of motors, such as brush-type DC motors, which need periodic brush replacements.

4. **Quiet Operation** AC motors are generally quieter than older motor designs, making them suitable for applications where noise reduction is important.

5. **Compatibility with Modern Controls** AC motors work well with variable speed drives (VFDs), allowing for precise speed and torque control, which can improve process efficiency.

6. **Wide Availability of Parts** Since AC motors are common, replacement parts and service support are widely available.

7. **Suitable for Industrial and Commercial Use** This motor appears to be designed for heavy-duty applications, such as HVAC systems, pumps, or industrial machinery, where reliability is critical.

8. **No Brush Wear** Unlike brushed DC motors, AC motors do not have brushes, reducing wear and tear over time.

#### **Cons:**

1. **Higher Initial Cost** AC motors, especially high-quality or energy-efficient models, may have a higher upfront cost compared to simpler motor types.

2. **Complexity in Speed Control** While AC motors can be controlled with VFDs, the setup and programming of these drives can be more complex than simple DC motor controls.

3. **Sensitivity to Voltage Fluctuations** AC motors can be affected by voltage spikes or drops, which may reduce efficiency or lifespan if not properly protected.

4. **Potential for Overheating** If not properly sized or cooled, AC motors can overheat, especially in high-load applications, leading to reduced performance or failure.

5. **Dependence on Power Quality** Poor power quality (e.g., harmonics, unbalanced phases) can negatively impact motor performance and longevity.

6. **Limited Lifespan in Harsh Environments** If exposed to extreme temperatures, moisture, or corrosive conditions without proper protection (e.g., enclosures), the motor s lifespan may be shortened.

7. **Requires Skilled Installation** Proper wiring, grounding, and connection to the power supply are essential; improper installation can lead to safety hazards or reduced efficiency.

8. **Potential for Higher Noise in Some Cases** While generally quieter than older motors, some AC motors (especially those with high horsepower) can produce noticeable noise if not properly mounted or balanced.

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### **Conclusion:**

The **939-AS-3247 Electric Hour AC Motor (P-51430)** appears to be a well-suited choice for applications requiring **reliability, efficiency, and durability**, particularly in industrial or commercial settings where consistent performance is critical. Its **low maintenance, compatibility with modern controls, and energy efficiency** make it a strong option for long-term use. However, the **higher initial cost, complexity in speed control, and sensitivity to power quality** are factors that must be carefully considered.

If the motor is **properly sized, installed, and maintained**, it will likely deliver **excellent performance and longevity**. However, if the application involves **frequent speed adjustments, harsh environmental conditions, or unreliable power supply**, additional considerations such as **VFDs, surge protectors, or protective enclosures** may be necessary to mitigate potential drawbacks.

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### **Recommendation:** **Buy the motor if:**

- You need a **reliable, efficient, and low-maintenance** solution for an **industrial or commercial application** (e.g., HVAC, pumps, conveyors).

- Your facility has **stable power supply** or can invest in **power conditioning equipment** to protect the motor.

- You are prepared for **potentially higher upfront costs** but expect **long-term savings** in energy and maintenance.

- You plan to use **VFDs or speed control systems** to optimize performance.

**Avoid or reconsider if:**

- You are working with a **tight budget** and cannot justify the higher initial cost.

- Your application involves **frequent voltage fluctuations or poor power quality**, as this could shorten the motor s lifespan.

- You lack **expertise in motor installation or VFD setup**, as improper configuration could lead to inefficiencies or failures.

- The motor is being selected for a **light-duty or short-term use**, where a simpler or lower-cost motor might suffice.

**Final Verdict:** This motor is a **strong, high-quality choice** for most **heavy-duty, efficiency-focused applications**, provided proper installation, maintenance, and environmental controls are in place. If your use case aligns with its strengths, it is a **recommended purchase**. Otherwise, a cost-benefit analysis against alternatives may be necessary.

Details:

Used, removed from working pull. Please observe all the pictures, will come as shown.

part #: 939as3247 price

  • $99.99

specifications oelemot:

  • brand: Ohio
  • mpn: 939-as-3247
  • part type: Ac Motor
  • rated load: Hp
  • current type: Ac
  • shaft type: Keyed
  • ac phase: Three Phase
  • country of origin: United States

seller oelemot:

  • city: Hopkins, Minnesota
  • # reviews: 420
  • rating: 100.0%

payments oelemot:

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  • wallet: Google-pay

shipping oelemot:

  • type: Fixed
  • service: Standard
  • class: Standard
  • transit: 4-6 Days
  • cost: $17.95

general oelemot:

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

offer oelemot:

  • sold: 0
  • quantity: 1
  • options: Ship-to-home
  • availability: In Stock
  • started: April 4, 2026

returns oelemot:

  • time: 30 Days
  • paid by: Buyer
  • method: Money back
  • policy: Returns Accepted
part type: ac motor, rated load: hp, current type: ac, shaft type: keyed, ac phase: three phase, country of origin: united states,
category: business & industrial > industrial automation motion controls > electric > general purpose, sku: 21344683848038604,
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1 offer $99.99 USD
  • Used. Offer #1 priced at $99.99 + $39.79 shipping estimate = $139.78* total. +$39.79 shipping

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