DELCO A6408 Electric Motor Rpm Single Phase 1/4HP 1735

( Brand: Delco ), ( Manufacturer Part Number: A6408 ), ( Part Type: Motor ), ( Actual Rated Input Voltage: 110 ), ( Delco 1/4hp Single Phase 5/8 Shaft Electric Motor: Delco 1/4hp Single Phase Table Saw Electric Motor ), ( Insulation Class: B ), ( Heavy Duty 1/4hp Electric Motor: Vintage Delco 1/4hp Electric Motor ), ( Current Type: Ac ), ( Rated Load: Hp ), ( Nema Design Letter: Design B ), ( Ac Frequency Rating: 60 Hz ), ( Enclosure Type: Open ), ( Shaft Type: Keyed ), ( Ac Motor Type: Induction/asynchronous ), ( Shaft Diameter: 5/8 In ), ( Mounting Type: Base-mounted ), ( Reversible/non-reversible: Reversible ), ( Cheap 1/4hp Single Phase Electric Motor: Delco A6408 1/4hp Single Phase Electric Motor ), ( Delco 1/4hp Single Phase Electric Motor: Delco 1/4hp Single Phase 1730 Rpm Electric Motor ), ( Nominal Rated Input Voltage: 115 V ), ( Ac Phase: Single Phase ), ( Country Of Origin: United States )

Review DELCO Vintage 1/4hp Electric Motor Model Rpm Single Phase Tested

The **Delco A6408 1/4 Horsepower Single-Phase Electric Motor** is a robust and versatile fractional horsepower motor designed for reliability, efficiency, and long-term performance in a wide range of industrial, commercial, and residential applications. Engineered with precision, this compact yet powerful motor delivers a consistent output of **1/4 horsepower (0.25 hp)** at a nominal speed of **1,735 RPM**, making it ideal for applications where steady torque and smooth operation are essential. Built with Delco s reputation for quality craftsmanship, this motor features a durable **cast iron endbell and frame**, providing excellent thermal dissipation and structural integrity to withstand continuous use under moderate to heavy loads. Its **single-phase induction design** ensures compatibility with standard household or light-commercial electrical systems, offering a straightforward installation without the need for specialized wiring or complex controls.

The A6408 motor incorporates a **ball-bearing support system**, including both the input and output shafts, which minimizes friction and reduces wear over time, extending the motor s operational lifespan. This design also contributes to quieter operation and smoother performance, making it suitable for applications where noise reduction is a priority, such as in HVAC systems, small machinery, or appliance components. The motor s **standard NEMA 14 frame** ensures compatibility with a broad range of pulleys, belts, and mechanical couplings, allowing for easy integration into existing or custom-built systems. Whether used in **ventilation fans, water pumps, conveyors, or small industrial equipment**, this motor provides the consistent power needed to maintain efficient operation while minimizing energy consumption.

Safety and reliability are paramount in the construction of the Delco A6408, with features such as **overload protection** (via thermal cutouts in some configurations) and a **sealed bearing assembly** to prevent contamination from dust, moisture, or debris. The motor s **efficient winding and magnetic core design** optimize energy transfer, reducing heat buildup and improving overall efficiency an important consideration for applications running continuously or under frequent start-stop cycles. Additionally, the motor s **standard voltage rating of 115V** (though it may also be available in 230V variants depending on the application) ensures broad compatibility with most electrical systems, while its **capacitor-start or permanent-split capacitor (PSC) configuration** (depending on the model) provides reliable starting torque and stable operation. Whether used in a **small workshop, commercial kitchen, or light-duty manufacturing setting**, the Delco A6408 delivers the dependable performance required to keep operations running smoothly with minimal maintenance.

For applications requiring flexibility, the motor s **direct mounting options** and **shaft configurations** (including keyed or keyway shafts) allow for seamless integration into various mechanical assemblies. Its **low vibration output** further enhances durability, reducing the risk of premature wear on connected components. Whether powering a **small air compressor, a garage door opener, or a piece of laboratory equipment**, this motor combines **Delco s engineering excellence with practical performance**, making it a trusted choice for engineers, technicians, and DIY enthusiasts alike. With its **compact yet sturdy build**, **efficient energy use**, and **long-lasting construction**, the Delco A6408 1/4 HP single-phase motor stands as a dependable workhorse for a multitude of demanding applications.

The **Delco A6408 1/4 HP, 1735 RPM single-phase electric motor** is a compact, fractional horsepower motor commonly used in small appliances, fans, and light-duty machinery. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros of the Delco A6408 Motor**

1. **Reliability and Brand Reputation**

- Delco (now part of **Bosch**) has a long history of producing durable, high-quality electric motors for automotive and industrial applications. This motor is designed for longevity, especially in applications where consistent performance is critical.

2. **Compact and Lightweight Design**

- The 1/4 HP rating makes it suitable for small appliances, fans, and low-load applications where space is limited. Its small frame (likely **Frame 56 or similar**) allows for easy integration into existing or custom designs.

3. **Single-Phase Operation**

- Unlike three-phase motors, this motor is plug-and-play for standard household or light commercial single-phase power supplies (110V or 220V, depending on the model). No additional wiring or phase conversion is required.

4. **Standardized Mounting and Shaft Options**

- The motor likely comes with **standard mounting holes** (e.g., 1.5" or 2" flange) and a **shaft extension** compatible with pulleys, fans, or direct-drive mechanisms. This makes it easy to adapt to different applications without extensive modifications.

5. **Cost-Effective for Low-Power Needs**

- At 1/4 HP, it is significantly cheaper than larger motors while still providing sufficient torque for many small-scale tasks. It is often used in **shop tools, air purifiers, small pumps, and ventilation systems**, where high power is unnecessary.

6. **Low Maintenance Requirements**

- Being a **permanent split capacitor (PSC) or capacitor start (CS) motor**, it typically requires minimal upkeep. The main maintenance points are ensuring the capacitor (if present) is functional and keeping the bearings lubricated.

7. **Wide Availability of Replacement Parts**

- As a legacy Delco/Bosch motor, replacement parts (brushes, bearings, capacitors) are still available through automotive and industrial suppliers. This reduces long-term downtime if repairs are needed.

8. **Quiet Operation**

- Fractional HP motors like this one are generally quieter than larger motors, making them suitable for applications where noise is a concern (e.g., home fans, office equipment).

9. **Versatile Voltage Options**

- Depending on the specific model, it may be available in **110V or 220V** configurations, allowing flexibility depending on regional power standards.

10. **Compatibility with Existing Systems**

- If you already have a system designed for a 1/4 HP motor, this unit will seamlessly fit without requiring major redesigns.

---

### **Cons of the Delco A6408 Motor**

1. **Limited Power for Heavy Loads**

- At only **1/4 HP (186 watts)**, this motor is **not suitable for high-torque or high-load applications**. It may struggle with continuous duty cycles in demanding tasks (e.g., heavy-duty pumps, large compressors, or high-resistance fans). It is best for **light to moderate intermittent use**.

2. **Potential for Overheating Under Heavy Load**

- If the motor is subjected to **continuous operation at or near its maximum capacity**, it may overheat, reducing lifespan. Proper **thermal protection** (e.g., thermal overload relays) may be necessary in some applications.

3. **Brush Wear (If Applicable)**

- Some Delco motors (especially older models) use **brushes** for commutation. While brushless designs are more common now, brushed motors require **periodic brush replacements**, adding maintenance overhead. Check the motor s specifications to confirm its commutation type.

4. **Single-Phase Limitations**

- Single-phase motors are **less efficient** than three-phase motors of similar power ratings. They may draw more current during startup (due to the capacitor or winding design), which could affect circuit breakers in sensitive applications.

5. **Sensitivity to Voltage Fluctuations**

- Like most small motors, the Delco A6408 can be **sensitive to voltage spikes or drops**. Frequent voltage irregularities may reduce efficiency or damage the motor over time. A **voltage stabilizer** may be needed in unstable power environments.

6. **Limited Speed Control Options**

- Without additional components (e.g., a **variable frequency drive (VFD)** or **potentiometer-based speed controller**), speed adjustment is difficult. Most single-phase fractional HP motors run at a **fixed speed (1735 RPM in this case)**.

7. **Potential for Vibration and Wear**

- If the motor is **poorly balanced or mounted on a flexible surface**, it may develop **vibration issues** over time, leading to premature bearing wear. Proper **mounting and alignment** are critical.

8. **Obsolete or Hard-to-Find Parts**

- While still available, some **older Delco motors** may have **discontinued components** (e.g., specific capacitors or bearings). Always verify part availability before purchasing.

9. **No Built-In Protection Against Overloads**

- Unlike some modern motors, this unit may **not include built-in thermal protection**. In applications where **overloads are possible**, an external **thermal relay or circuit breaker** should be added.

10. **Limited Lifespan for Continuous Use**

- While durable, **fractional HP motors are not designed for 24/7 operation**. Expect a **lifespan of 10,000 20,000 hours** under normal conditions, which may be shorter if misused.

---

### **Conclusion**

The **Delco A6408 1/4 HP, 1735 RPM single-phase motor** is a **reliable, cost-effective choice for light-duty applications** where space is limited and power requirements are modest. Its **compact size, ease of installation, and brand reputation** make it a practical option for **small fans, pumps, appliances, and low-load machinery**.

However, it is **not suitable for heavy-duty, high-torque, or continuous high-load applications**. Its **single-phase design, limited speed control, and sensitivity to voltage fluctuations** also require careful consideration in the right environment.

If you need a **long-lasting, low-maintenance motor for a small, intermittent-use system**, this motor is a **solid recommendation**. But if your application demands **higher power, precise speed control, or continuous operation**, you may need to consider a **larger motor, a three-phase motor, or a motor with built-in protection features**.

---

### **Final Recommendation**

You need a **small, reliable motor** for **light-duty tasks** (e.g., a shop fan, small air purifier, or low-flow pump).

Your application **does not require high torque or continuous heavy use**.

You can **ensure proper mounting, ventilation, and voltage stability** to maximize its lifespan.

You prefer a **well-known brand** with **easy availability of parts**.

Your application requires **high power, frequent heavy loads, or continuous operation**.

You need **precise speed control** without additional components.

Your power supply is **unstable or prone to spikes/drops**.

You are working in a **high-vibration environment** without proper damping.

- **For higher power needs:** A **1/2 HP or 3/4 HP single-phase motor** (e.g., **Dayton, TEFC, or GE motors**).

- **For better efficiency:** A **three-phase motor** (if available in your setup).

- **For speed control:** A **DC motor with a variable speed drive** or a **single-phase motor with a VFD**.

- **For longer lifespan:** A **sealed, explosion-proof, or NEMA-premium motor** if environmental conditions are harsh.

If your use case aligns with the motor s strengths, the **Delco A6408 is a worthwhile purchase**. Otherwise, evaluate whether a slightly more powerful or specialized motor would better meet your needs.

Details:

This is a continuous 4 motor. UP FOR PURCHASE, Good used heavy duty Delco model A6408, 1/4hp, 110V, single phase 1730 rpm electric motor just pulled from an older Sears table saw. Delco #109200. Motor is extremely well built and has a 5/8 keyed shaft.

part #: a6408 prices

• $44.06-$185.00

specifications oelemot:

• brand: Delco
• mpn: A6408
• part type: Motor
• actual rated input voltage: 110
• delco 1/4hp single phase 5/8 shaft electric motor: Delco 1/4hp Single Phase Table Saw Electric Motor
• insulation class: B
• heavy duty 1/4hp electric motor: Vintage Delco 1/4hp Electric Motor
• current type: Ac
• rated load: Hp
• nema design letter: Design B
• ac frequency rating: 60 Hz
• enclosure type: Open
• shaft type: Keyed
• ac motor type: Induction/asynchronous
• shaft diameter: 5/8 In
• mounting type: Base-mounted
• reversible/non-reversible: Reversible
• cheap 1/4hp single phase electric motor: Delco A6408 1/4hp Single Phase Electric Motor
• delco 1/4hp single phase electric motor: Delco 1/4hp Single Phase 1730 Rpm Electric Motor
• nominal rated input voltage: 115 V
• ac phase: Single Phase
• country of origin: United States

general oelemot:

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

returns oelemot:

• policy: No Returns

seller oelemot:

• # reviews: 1828
• rating: 99.8%
• city: Boulder Junction, Wisconsin

offer oelemot:

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

payments oelemot:

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

shipping oelemot:

• class: Standard, Economy
• transit: 3-6 Days
• service: UPS Ground, USPS Ground Advantage, UPS Ground Saver
• carrier: UPS, USPS
• cost: $30.97
• type: Calculated

Delco A6408 Is Similar To:

• 2l4724 Delco Electric Motor Hp Phase Rpm (50.4% similar) ...(September 25th, 2018)
• 2r5724bl Delco Ac Electric Motor Brake (44.2% similar) Lbs shipping DIMENSIONS:28...(July 18th, 2018)
• A-7156 Delco Vintage Motor Model (46.7% similar) Please view photos vintage Delco motor model. 5 v dc 1/5 0 hp...(November 16th, 2017)
• A2666 Delco Motor General Motors (29.9% similar) Sold for parts only. Plenty of cosmetic wear. No idea if its missing any parts...(December 1st, 2017)
• A8270cc Delco Hp Electric Motor Rpm Belt Base Plate Usa Made (53.3% similar) ...(May 26th, 2018)
• B-4619 Delco Ac Motor 75hp (35.6% similar) ...(March 15th, 2017)
• 3n9317cqz Electric Motor Delco 3-phase Ac Frame 405tyz 75hp 1180rpm 230 460v (39.7% similar) Fast shipping. For next day air or faster shipping please. Standard shipping is USPS priority mail or ups ground. Call for better pricing. Delco ac electric motor model 3N9317CQZ frame 405TYZ horsepower rpm volts shaft diameter location BRP21 good used working electric motor...(October 5th, 2016)
• Frame-m505s N5753zar Delco 150hp Ac Motor 890rpm 3ph Missing Cover (36.9% similar) ...(November 22nd, 2016)
• Sa8391cc Delco Vintage Electric Cheese Grater Hp Type Motor (41.8% similar) ...(March 3rd, 2018)
• Delco R2702-e Ac Motor 5hp M3816 (37.4% similar) Delco R2702-E ac motor 5HP M3816 warranty information: this is a used item and has been checked for basic functionality. Item includes a 30 day warranty...(January 6th, 2024)
• Delco A8280cc Usa Thermotron Type A Electric Motor 1 3 Hp 115v 1725 Rpm Runs Great (53.5% similar) This Delco USA Motrin type a electric motor is a powerful and reliable piece of equipment, capable handling rated load 1/6 hp. Its current type is ac, ensuring a smooth and efficient operation. This motor has been tested and is proven to run great. The motor boasts a shaft diameter of 9/16 and ...(January 27th, 2024)