MARATHON AVK56T34D5351F Ac Motor Pump J044 56J-65 3PH 1-1/2HP 3450RPM

( Brand: Marathon ), ( Manufacturer Part Number: AVK56T34D5351F ), ( Part Type: Ac Motor Pump ), ( Current Type: Ac ), ( Nominal Rated Input Voltage: 460 V ), ( Shaft Diameter: 3 Ph 1 1 / 2 Hp 3450 Rpm 208 230 / 460 V-ac ), ( Frame: 56j-65 ), ( Product Condition: New Other ), ( Model Number: J044 Avk56t34d5351f ), ( Rpm: 3450 Rpm ), ( Voltage: 460 V-ac ), ( Shaft Od: 0.625 In ), ( Reference Sku: 973244 ), ( Power: 1.5 Hp )

Review MARATHON 56t34d5351f Ac Motor 3ph 1-1/2hp 3450rpm Pump

The **Marathon AVK56T34D5351F J044 56J-65 3-Phase AC Motor** is a robust, high-performance electric motor meticulously engineered for demanding industrial applications, particularly in fluid handling systems such as pumps, compressors, and conveyors. This motor belongs to the **56J-65 frame series**, a standard size within Marathon s lineup, offering a balanced blend of efficiency, durability, and reliability for continuous operation under heavy loads. With a **1.5 horsepower (hp) output**, it delivers a consistent and powerful torque performance, making it ideal for medium-duty applications where precision and endurance are critical. The motor operates at a nominal speed of **3450 revolutions per minute (RPM)**, synchronized with a 60 Hz frequency, ensuring optimal synchronization with standard industrial power grids while maintaining smooth, vibration-free operation.

Designed with **Class B insulation**, this motor adheres to strict NEMA (National Electrical Manufacturers Association) and UL (Underwriters Laboratories) standards, providing exceptional thermal protection and longevity even in environments with moderate temperature fluctuations. The **3-phase AC induction design** ensures efficient energy conversion, reducing operational costs while maximizing output. The **J044** designation indicates a specific mounting configuration, featuring a **foot-mounted design with a 56T frame**, which allows for versatile installation options, including direct coupling to pumps or other mechanical loads. The **AVK56T34D5351F** model incorporates advanced engineering features such as **high-efficiency windings, optimized rotor dynamics, and reinforced shaft bearings**, all of which contribute to reduced energy consumption, minimized wear, and extended service life often exceeding 20,000 hours under proper maintenance.

This motor is built to withstand the rigors of industrial environments, featuring a **totally enclosed, fan-cooled (TEFC) construction** that protects internal components from dust, moisture, and contaminants, while the integrated cooling fan ensures efficient heat dissipation without compromising performance. The **56J-65 frame** provides ample space for robust internal components, including a **double-bearing arrangement** that enhances stability and reduces axial and radial shaft movement, thereby minimizing vibration and prolonging bearing life. Additionally, the motor s **NEMA Premium efficiency rating** further underscores its commitment to energy savings, aligning with modern sustainability goals while maintaining high performance.

Whether integrated into a **centrifugal pump system, a water treatment facility, or an HVAC application**, this Marathon motor delivers dependable power with minimal maintenance requirements. Its **sealed construction** eliminates the need for frequent lubrication, while the **high-quality materials** such as corrosion-resistant coatings and precision-machined components ensure resistance to environmental stressors. The motor s **compatibility with standard control systems** and **variable frequency drives (VFDs)** makes it adaptable to a wide range of operational demands, from steady-state applications to variable-speed scenarios. Overall, the **Marathon AVK56T34D5351F J044 56J-65 3-Phase AC Motor** represents a premium choice for industries seeking a reliable, high-efficiency electric motor that balances performance, durability, and operational cost-effectiveness.

### **Pros and Cons of buying a Marathon AVK56T34D5351F J044 56J-65 3-Phase 1.5 HP 3450 RPM Pump**

1. **High Efficiency** Marathon pumps are known for their energy-efficient motors, which can reduce operational costs over time by consuming less power while maintaining performance.

2. **Durable Construction** The motor appears to be a **56J-65 frame**, a common industrial standard, suggesting robust build quality suitable for continuous operation.

3. **High RPM (3450 RPM)** This speed is ideal for applications requiring fast flow rates, such as high-pressure water systems, HVAC, or industrial fluid transfer.

4. **3-Phase Motor** More reliable and stable than single-phase motors for heavy-duty or commercial applications, with better torque and power consistency.

5. **1.5 HP Rating** Sufficient for medium-duty applications like residential irrigation, small commercial water systems, or light industrial processes.

6. **Compatibility with Standard Systems** The **AVK56T** model is part of Marathon s commercial line, meaning it should integrate well with common plumbing and piping systems.

7. **OEM & Aftermarket Availability** Marathon is a trusted brand with widespread availability of replacement parts, reducing long-term maintenance risks.

8. **Wet Rotor Design (Likely)** Many Marathon pumps use wet rotor motors, which are more efficient and require less maintenance than dry rotor models.

9. **Good for Variable Loads** The motor s design may handle fluctuating demand well, making it versatile for different applications.

10. **Warranty & Support** Marathon offers standard warranties, and the pump may qualify for extended coverage depending on the retailer.

---

1. **Potential Overkill for Light-Duty Use** If the application only requires ** HP or less**, a **1.5 HP motor** may be unnecessarily powerful, leading to higher upfront costs and energy consumption.

2. **Noise & Vibration** High-RPM motors can generate more noise and vibration, which may be an issue in residential or noise-sensitive environments.

3. **Higher Initial Cost** Compared to smaller or less efficient pumps, this model may have a higher purchase price.

4. **Specialized Installation Requirements** A **3-phase motor** requires a dedicated electrical setup (208V, 230V, or 460V depending on configuration), which may not be available in all locations.

5. **Maintenance Needs** While durable, pumps of this size still require periodic maintenance (seal checks, bearing lubrication, impeller inspection) to prevent failures.

6. **Potential for Overheating in Low-Load Conditions** If the pump runs at partial load for extended periods, the motor may overheat, reducing efficiency and lifespan.

7. **Limited Portability** Due to its size and power requirements, this is not a plug-and-play unit for temporary or mobile applications.

8. **Compatibility Issues with Older Systems** If the existing plumbing or electrical setup is outdated, modifications may be needed, adding to installation costs.

9. **Energy Costs** While efficient, a **1.5 HP motor** will consume more electricity than smaller pumps, increasing operational expenses.

10. **Resale Value** Like most specialized equipment, this pump may not retain much resale value if upgraded needs arise later.

---

The **Marathon AVK56T34D5351F 1.5 HP, 3450 RPM, 3-phase pump** is a **reliable, high-performance choice** for **medium to heavy-duty applications** where efficiency, durability, and consistent power are critical. It excels in **commercial, industrial, or high-flow residential systems** (e.g., large irrigation, HVAC, or water transfer). However, it may be **overpowered and cost-prohibitive** for light-duty or low-flow applications.

If your needs align with **continuous, high-demand fluid movement** and you have the **electrical infrastructure** to support a **3-phase motor**, this pump is a **strong recommendation**. For **smaller, lower-power applications**, a ** HP or HP pump** would be more cost-effective.

---

- You need **reliable, high-efficiency performance** for **commercial, industrial, or large-scale residential use**.

- Your system requires **fast flow rates (3450 RPM)** and **consistent power delivery**.

- You have **3-phase electrical access** (208V, 230V, or 460V).

- You prioritize **long-term durability and low maintenance** (Marathon s reputation supports this).

- The pump will operate **near full load** most of the time (to maximize efficiency).

- Your application only requires **low to moderate flow** (a smaller motor would suffice).

- You lack **3-phase power** or cannot justify the electrical setup costs.

- Noise and vibration are **critical concerns** (consider a lower-RPM alternative).

- Budget constraints make a **less powerful pump** a better short-term solution.

- You anticipate **frequent upgrades** this pump may become underpowered quickly.

- If **cost is a major factor**, explore ** HP or HP Marathon pumps** (e.g., **AVK34 or AVK40 series**) for lighter loads.

- For **variable-speed needs**, a **VFD-compatible pump** (like some Marathon models) could offer better energy savings.

- If **portability is needed**, a **single-phase or smaller 3-phase pump** with lower RPM may be more practical.

**Final Verdict:** This is a **premium choice for demanding applications** just ensure it matches your system s requirements before purchasing. If in doubt, consult a **pump specialist or electrician** to confirm compatibility.

Details:

Marathon J044 56T34D5351F Ac Motor 56J-65 3ph 1-1/2hp 3450rpm W/ Pump. Shipped with UPS Ground.

part #: avk56t34d5351f prices

• $299.99-$387.85

specifications oelemot:

• brand: Marathon
• mpn: Avk56t34d5351f
• part type: Ac Motor Pump
• current type: Ac
• nominal rated input voltage: 460 V
• shaft diameter: 3 Ph 1 1 / 2 Hp 3450 Rpm 208 230 / 460 V-ac
• frame: 56j-65
• product condition: New Other
• model number: J044 Avk56t34d5351f
• rpm: 3450 Rpm
• voltage: 460 V-ac
• shaft od: 0.625 In
• reference sku: 973244
• power: 1.5 Hp

returns oelemot:

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

offer oelemot:

• sold: 0
• quantity: 1
• started: February 5, 2026
• availability: In Stock
• options: Ship-to-home
• best offers: True

payments oelemot:

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

general oelemot:

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

shipping oelemot:

• cost: $0.00
• carrier: UPS
• class: Standard, One-day
• service: UPS Ground, UPS Next Day Air, UPS Next Day Air Saver
• type: Fixed
• transit: 4-7 Days

seller oelemot:

• rating: 99.8%
• # reviews: 2307
• city: Fredericksburg, Virginia

Marathon AVK56T34D5351F Is Similar To:

• Kse56c34d852a Marathon Motor Volts Frame Dripproof (27.3% similar) Motor is new it was not installed run on a construction project. It is being sold as surplus...(July 23rd, 2018)
• 002-0002 Marathon Electric Motor Hp Works Great (32.6% similar) Great working motor with some cosmetic ware 1/2 shaft 3400RPM...(October 2nd, 2018)
• 043481999890 Marathon Hp Farm Duty Shop Motor (28.6% similar) Part: GEX31531 prices...(April 1st, 2019)
• 043481999920 Marathon Motors Hp Farm Duty Shop Motor (28.6% similar) Part: GEX31231 prices...(April 1st, 2019)
• 048s17d2090 Marathon Motors Electric Hp Motor Single Phase Hz Rpm (30.1% similar) Marathon electric 1/3 hp motor, new old stock, single phase, 60 Hz, 1725 rpm. Purchased out of maintenance department clearance offer...(March 24th, 2019)
• 056c17d2074 Marathon Motors Hp Rpm General Purpose Motor (27.8% similar) 40 degrees c motor shaft rotation cw cc dia. The very best practice is to look at all pictures and ask questions before buying. Windy city liquidation is a corporation that helps its clients dispose of unwanted inventory. C charity or selling it directly to us. Ambient temp the voltage is, ...(July 20th, 2018)
• 056c17g15527 Marathon Electric Motor Model (27.7% similar) Hazardous location motor, capacitor start, motor shaft rotation cw cc, mounting type is rigid base, class 1 c,d 2 e,f,g, diameter 5/8 , length 7 less overall lead 6 duty continuous, bearings ball, frame material steel, standards are ul listed E12044 CSS certified LR47504. Marathon motor model ...(February 18th, 2019)
• 056h17e5301 Marathon Hp Rpm Epnv Motor New (27.7% similar) New, opened box for pictures. Weighs 30 lbs. Box has wear from shelving and writing on it. Please review all pictures...(October 17th, 2018)
• 056t17d1044-c00589-13 Marathon Electric Motor (25.6% similar) Marathon electric 1/2 hp ac motor 056T17D1044 C00589-13056T17D1044 C00589 HP208 volts 1725 1425 RPM3 unused condition...(July 28th, 2018)
• 056t17d15910 Marathon Motors Motor Keyed (26.6% similar) motor shaft design keyed. Ambient temp. 85 full load amps, no. 25 motor service factor, ball bearings, frame material rolled steel, max of speeds 1, mounting type rigid base, position horizontal, thermal protection none, ins...(August 4th, 2018)
• 056t17d2099f Marathon Motors Motor Hp Rpm Air Conditioner Fan Blower Ac (31.4% similar) 3RPM 1500 fl eff N/A sf air conditioning ac replaces. 4 rpm 1800 fl eff 75. It is new in the original opened box. Have a great day...(July 4th, 2018)