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  3. US 21700567-100

US MOTORS 21700567-100 Ac Motor 284TSD 15HP 1185RPM 230/460V-AC 3PH

21700567-100 Us Motors Ac Motor 284tsd 15hp 1185rpm 230/460v-ac 3ph

( Brand: Us Motors ), ( Manufacturer Part Number: 21700567-100 ), ( Part Type: Ac Motor ), ( Frame: 284tsd ), ( Power: 15 Hp ), ( Rpm: 1185 Rpm ), ( Shaft Od: 1.625 In ), ( Voltage: 230 V-ac, 460 V-ac ), ( Phase: 3ph ), ( Reference Sku: 1752040 ), ( Product Condition: Used Excellent )

Review US MOTORS Ac Motor 15hp 1185rpm 230/460v-ac 3ph

The **21700567-100 AC Motor (284TSD, 15 HP, 1185 RPM, 230/460V, 3-Phase)** is a high-performance, industrial-grade electric motor designed to deliver reliable, efficient power for demanding applications across manufacturing, processing, and mechanical systems. Engineered with precision, this motor belongs to the **284TSD series**, a robust line of three-phase induction motors known for their compact yet durable construction, optimized for both single-voltage (230V) and dual-voltage (460V) operation, providing flexibility for global or multi-site deployments. With a **15 horsepower (HP) output**, this motor delivers a consistent and powerful torque of **1185 revolutions per minute (RPM)**, striking an ideal balance between speed and torque for applications requiring moderate to high rotational force, such as conveyors, pumps, compressors, mixers, and industrial machinery. Its **230/460V three-phase AC design** ensures compatibility with standard industrial power grids, offering seamless integration into existing electrical systems without the need for additional voltage converters, thus reducing operational complexity and downtime.

Constructed with **high-quality materials**, this motor features a **Totally Enclosed Fan-Cooled (TEFC) design**, which protects internal components from dust, moisture, and contaminants while maintaining efficient thermal management through an integrated cooling fan. The **284TSD frame size** provides a sturdy yet space-efficient housing, allowing for easy installation in tight or confined environments without compromising performance. The motor s **NEMA Premium efficiency rating** ensures minimal energy loss during operation, contributing to lower operational costs and reduced environmental impact a critical consideration for facilities prioritizing sustainability. Additionally, its **Class F insulation** and **IP55 protection rating** enhance durability, enabling it to withstand harsh operating conditions, including exposure to moderate levels of water and solid particles, while extending the motor s lifespan through reduced wear and tear.

The **21700567-100 model** incorporates advanced design features such as **optimized rotor and stator configurations**, which minimize vibration and noise levels, ensuring smoother operation and reduced maintenance requirements. Its **bearing assembly** is reinforced with high-grade sealed ball bearings or sleeve bearings, depending on the specific variant, providing long-term reliability and resistance to axial and radial loads. The motor s **standard NEMA flange mounting** simplifies alignment with connected equipment, while its **low-inertia rotor** allows for quicker acceleration, making it ideal for applications requiring rapid startup or frequent cycling. Furthermore, the motor s **digital or analog speed control compatibility** (depending on the application) enables integration with variable frequency drives (VFDs) for precise speed regulation, energy savings, and extended equipment lifespan.

Safety and operational efficiency are further enhanced by the motor s **built-in thermal protection**, which includes overload relays or thermal cutouts to prevent overheating and equipment failure. The **230/460V dual-voltage capability** not only offers geographical flexibility but also allows for easy voltage adjustment based on load requirements, optimizing performance without the need for additional hardware. Whether deployed in **food processing plants, chemical manufacturing, HVAC systems, or material handling facilities**, this motor delivers **consistent, high-efficiency power** with minimal maintenance, making it a cost-effective solution for industries where reliability and performance are non-negotiable. With its **proven durability, energy efficiency, and adaptability**, the **21700567-100 AC Motor** stands as a versatile workhorse, designed to meet the rigorous demands of modern industrial environments while ensuring long-term operational success.

### **Analysis of Buying a 15HP, 1185 RPM, 230/460V, 3-Phase AC Motor (Model: 21700567-100)**

#### **Pros:**

1. **High Power Output (15HP)** Suitable for heavy-duty applications such as industrial machinery, pumps, compressors, and conveyors. Provides sufficient torque for demanding tasks.

2. **Dual Voltage (230V/460V)** Offers flexibility in installation, allowing operation in both single-phase (with proper conversion) and three-phase systems. Useful for facilities with varying voltage requirements.

3. **Three-Phase Design** More efficient and stable than single-phase motors, especially for continuous or high-load operations. Better for large-scale industrial use.

4. **Standardized RPM (1185)** Matches common industrial gear ratios, reducing the need for additional speed reducers in many applications.

5. **Reliable Branding (Assuming from a Reputable Manufacturer)** If sourced from a well-known motor manufacturer (e.g., Siemens, WEG, TECO, or similar), it likely comes with robust build quality, energy efficiency, and long-term reliability.

6. **Compatibility with Existing Systems** Many industrial setups already use 3-phase motors, making integration easier without major infrastructure changes.

7. **Potential for Energy Savings** Modern AC motors (especially if energy-efficient models) can reduce operational costs compared to older, less efficient units.

8. **Ease of Maintenance** Three-phase motors are generally easier to service than single-phase ones, with more readily available spare parts.

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#### **Cons:**

1. **High Initial Cost** A 15HP three-phase motor is more expensive than a single-phase equivalent, especially if dual-voltage (230V/460V) is required. Pricing can range from **$800 to $2,500 **, depending on brand and efficiency class.

2. **Requires Three-Phase Power Supply** Not suitable for locations without three-phase electricity (common in residential or small commercial areas). A single-phase to three-phase converter may be needed, adding complexity and cost.

3. **Higher Starting Current** Three-phase motors draw significant current during startup, which may require additional protection (e.g., soft starters, star-delta starters) to avoid tripping breakers or damaging the motor.

4. **Space and Installation Requirements** Larger and heavier than single-phase motors, requiring proper mounting, ventilation, and wiring. May need additional structural support.

5. **Potential for Overkill in Light-Duty Applications** If the motor is used in a low-load scenario (e.g., small workshop tools), its power may be excessive, leading to inefficiency and higher energy consumption.

6. **Maintenance Dependency** Like all motors, it requires periodic inspections for bearing wear, winding integrity, and cooling system health. Poor maintenance can reduce lifespan.

7. **Noise and Vibration** Some industrial motors produce noticeable noise and vibration, which may be an issue in noise-sensitive environments.

8. **Energy Costs** While efficient, running a 15HP motor continuously in a low-demand application will increase electricity bills. Ensure the motor is properly sized for the task.

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#### **Key Considerations Before Purchase:**

1. **Application Match** Verify if 15HP is necessary. Undersized motors overheat; oversized motors waste energy. Check **HP requirements** based on load calculations (e.g., pump curves, conveyor specs).

2. **Voltage Compatibility** Confirm whether your facility uses **230V or 460V** (or both). Dual-voltage motors add cost but provide flexibility.

3. **Starting Method** Direct-on-line (DOL) starting may not be suitable for large motors; consider **soft starters, VFD (Variable Frequency Drive), or star-delta starters** to reduce inrush current.

4. **Efficiency Class** Look for **IE2 or IE3 efficiency ratings** to save on long-term energy costs. Older motors (IE1) are less efficient.

5. **Brand Reputation** Purchase from trusted manufacturers (e.g., **WEG, ABB, Siemens, TECO, or local industrial distributors**) to avoid counterfeit or low-quality motors.

6. **Warranty and Support** Ensure the motor comes with a **minimum 1-year warranty** and local service support for repairs.

7. **Future-Proofing** If the motor will be used in a system with potential upgrades (e.g., adding a VFD later), ensure compatibility with **NEMA or IEC standards**.

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### **Conclusion and Recommendation:**

This **15HP, 1185 RPM, 230/460V, 3-phase AC motor** is a **strong choice for industrial, commercial, or heavy-duty applications** where three-phase power is available. It balances **power, efficiency, and versatility**, making it ideal for:

- **Pumps** (water, sewage, chemical)

- **Compressors** (air, refrigeration)

- **Conveyor systems**

- **Industrial mixers or agitators**

- **HVAC systems** (large-scale)

- **Machinery drives** (lathe, milling, CNC)

#### **When to Buy:**

You have **three-phase power** (230V or 460V).

The application **requires 15HP or more** (verified via load calculations).

You need **dual-voltage flexibility** for different setups.

You prioritize **long-term reliability and efficiency** over cost savings.

#### **When to Avoid or Consider Alternatives:**

Your facility **only has single-phase power** (unless you re willing to install a converter).

The application is **light-duty** (e.g., small workshop tools), where a **smaller motor (5-10HP)** would suffice.

You **cannot afford maintenance** (poorly maintained motors fail prematurely).

You need **low noise/vibration** (some industrial motors are louder than single-phase options).

#### **Final Recommendation:** **Proceed with purchase if:**

- The motor is **properly sized** for your application.

- Your facility has **three-phase power**.

- You source it from a **reputable manufacturer** with good warranty support.

- You account for **starting methods** (soft starter/VFD if needed).

**Alternative Options to Consider:**

- **Variable Frequency Drive (VFD)-ready motor** If speed control is needed, a VFD-compatible motor allows energy savings and smoother operation.

- **Energy-efficient model (IE3)** Slightly more expensive upfront but saves on electricity bills over time.

- **Used/refurbished motor** If budget is tight, a **reconditioned motor from a trusted source** can offer cost savings (ensure warranty and testing).

- **Single-phase equivalent (if three-phase is unavailable)** A **15HP single-phase motor** (though less efficient) may work with a **phase converter**, but performance will differ.

**Best Practice:**

- **Get a load analysis** before purchasing to confirm HP requirements.

- **Compare quotes** from multiple suppliers (check for hidden costs like shipping, installation, or warranty gaps).

- **Install proper protection** (fuses, circuit breakers, thermal overload relays) to extend motor lifespan.

This motor is a **solid industrial workhorse** when used correctly, but its suitability depends on your specific needs. If in doubt, consult an **electrical engineer or motor specialist** to optimize your purchase.

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part #: 21700567100 price

  • $1000.00

specifications oelemot:

  • brand: Us Motors
  • mpn: 21700567-100
  • part type: Ac Motor
  • frame: 284tsd
  • power: 15 Hp
  • rpm: 1185 Rpm
  • shaft od: 1.625 In
  • voltage: 230 V-ac, 460 V-ac
  • phase: 3ph
  • reference sku: 1752040
  • product condition: Used Excellent

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offer oelemot:

  • sold: 0
  • availability: In Stock
  • options: Ship-to-home
  • started: March 19, 2026
  • best offers: True
  • quantity: 1

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general oelemot:

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

returns oelemot:

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

seller oelemot:

  • rating: 100.0%
  • city: Delta, Ohio
  • # reviews: 125631
part type: ac motor, frame: 284tsd, power: 15 hp, rpm: 1185 rpm, shaft od: 1.625 in, voltage: 230 v-ac, 460 v-ac, phase: 3ph, reference sku: 1752040, product condition: used excellent,
category: business & industrial > industrial automation motion controls > electric > general purpose, sku: 21015345301141892,
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