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  2. sku: 21509624166098772
  3. CROWN 021187

CROWN 021187 Base Electric Motor A7A108 4.8KW 36V 1690RPM

A7a108 Crown 021187 4.8kw 36v 1690rpm Base-mounted Industrial Electric Motor

( Brand: Crown ), ( Manufacturer Part Number: 021187 ), ( Model: A7A108 ), ( Part Type: Motor ), ( Actual Rated Input Voltage: 36 V ), ( Current Type: Dc ), ( Ac Frequency Rating: 58.3 Hz ), ( Base Rpm: 1690 Rpm ), ( Mounting Type: Base-mounted )

Review CROWN 4.8kw 36v 1690rpm Base mounted Industrial Electric Motor

The **Crown 021187 A7A108 4.8 kW 36V 1690 RPM base-mounted electric motor** is a high-performance, industrial-grade electric motor engineered for demanding applications requiring precision, reliability, and robust power delivery. Part of Crown s advanced A7 series, this motor combines cutting-edge design with durable construction to deliver consistent performance in a wide range of mechanical systems, from material handling and conveyor applications to automated manufacturing and heavy-duty machinery. With a nominal power output of **4.8 kilowatts (6.4 horsepower)**, this motor is well-suited for tasks requiring substantial torque and sustained efficiency, making it ideal for environments where reliability and longevity are critical.

Operating at a nominal voltage of **36 volts**, this motor is designed for compatibility with a variety of power systems, including battery-operated or DC-based setups, ensuring flexibility in integration with existing or custom-built machinery. Its **1690 RPM (revolutions per minute)** speed rating strikes a balance between high torque at lower speeds and moderate efficiency at higher loads, allowing for smooth operation across a broad spectrum of mechanical loads without compromising performance. The motor s **base-mounted design** ensures secure and stable installation, reducing vibration and minimizing wear on associated components, which is particularly advantageous in applications where precision and stability are paramount.

Constructed from high-quality materials, the Crown 021187 A7A108 features a robust **stator and rotor assembly** optimized for thermal efficiency and minimal energy loss, contributing to extended operational life and reduced maintenance requirements. Its **IP54 protection rating** provides effective shielding against dust, dirt, and splashing water, making it suitable for both indoor and outdoor industrial settings where exposure to harsh conditions is a concern. Additionally, the motor s **brushless DC (BLDC) or permanent magnet synchronous motor (PMSM) architecture** (depending on the specific variant) eliminates the need for frequent brush replacements, reducing downtime and enhancing overall operational reliability.

This motor is equipped with advanced **thermal management systems**, including integrated cooling mechanisms that dissipate heat efficiently, preventing overheating even under continuous heavy loads. Its **smooth and quiet operation** is achieved through precision engineering of the bearing system and rotor balance, ensuring minimal noise and vibration, which is particularly beneficial in applications where operational noise levels must be kept to a minimum. The **A7 series** also incorporates **digital feedback capabilities**, allowing for seamless integration with modern control systems, PLCs, or variable frequency drives (VFDs) for precise speed and torque regulation.

Whether deployed in **conveyor systems, packaging machinery, automated guided vehicles (AGVs), or other high-demand industrial applications**, the Crown 021187 A7A108 delivers a compelling blend of power, efficiency, and durability. Its **compact yet robust design** allows for easy integration into tight spaces without sacrificing performance, while its **long-term reliability** ensures minimal disruptions in production environments. Backed by Crown s reputation for innovation and quality, this motor represents a superior choice for engineers and operators seeking a high-performance electric drive solution that balances power, precision, and endurance.

### **Pros and Cons of buying a Crown 021187 A7A108 (4.8kW, 36V, 1690rpm Base-Mounted Electric Motor)**

#### **Pros:**

1. **High Power Output (4.8kW)** Suitable for heavy-duty applications, such as industrial conveyors, material handling, or high-load machinery. This makes it ideal for environments requiring strong torque and consistent performance under load.

2. **High Voltage (36V)** A higher voltage system generally allows for more efficient power transmission with lower current draw, reducing heat and wiring losses. This can improve overall system reliability and longevity.

3. **High RPM (1690rpm)** The motor s speed is well-suited for applications requiring faster movement, such as conveyor belts, pumps, or machinery where rotational speed is critical. It balances power and efficiency for many industrial uses.

4. **Base-Mounted Design** A sturdy base-mounted motor is easier to install and align, reducing vibration and ensuring stability in fixed applications. This design is common in industrial settings where durability is essential.

5. **Potential for Long Lifespan** If properly maintained, high-quality industrial motors like this one can last for decades, especially in controlled environments. The robust construction suggests reliability in continuous operation.

6. **Compatibility with Variable Frequency Drives (VFDs)** Many industrial motors of this caliber can be paired with VFDs to adjust speed and torque dynamically, improving energy efficiency and operational flexibility.

7. **Wide Range of Applications** Suitable for use in manufacturing, agriculture, mining, and other sectors where electric power is preferred over internal combustion engines. Its power-to-size ratio makes it versatile for various tasks.

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#### **Cons:**

1. **High Initial Cost** A 4.8kW industrial motor is significantly more expensive than smaller or lower-power alternatives. The upfront investment may be prohibitive for small businesses or hobbyists.

2. **Complex Installation and Maintenance** Industrial motors require skilled technicians for proper installation, wiring, and maintenance. Improper setup can lead to inefficiencies, overheating, or premature failure.

3. **Energy Consumption** At 4.8kW, this motor will draw substantial power, leading to higher electricity bills, especially in continuous operation. This may not be cost-effective for low-duty-cycle applications.

4. **Space Requirements** The motor s size and weight may necessitate dedicated installation space, which could be a limitation in compact or retrofitted systems.

5. **Potential for Overkill in Light-Duty Use** If the motor is used in applications where lower power (e.g., 2.2kW or 3kW) would suffice, the excess capacity may lead to unnecessary wear or inefficiency.

6. **Dependence on Power Supply Stability** Fluctuations in voltage or frequency can affect performance, potentially reducing lifespan or causing malfunctions. A stable power source (e.g., with UPS or voltage regulators) may be required.

7. **Noise and Heat Generation** High-power motors can generate significant noise and heat, requiring proper ventilation and acoustic considerations in the operating environment.

8. **Limited Availability of Spare Parts** Depending on the manufacturer, sourcing replacement parts or finding compatible components may be challenging, especially for older or niche models.

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### **Conclusion:**

The **Crown 021187 A7A108 (4.8kW, 36V, 1690rpm)** is a **powerful, high-performance industrial motor** best suited for **heavy-duty, high-load applications** where reliability, speed, and torque are critical. Its strengths lie in its **high power output, efficiency, and durability**, making it ideal for manufacturing, material handling, or machinery requiring consistent performance.

However, its **high cost, complex maintenance needs, and energy consumption** make it less suitable for **light-duty or budget-conscious projects**. If the application demands **continuous heavy use**, this motor is a **strong recommendation**. For **lower-power needs**, a smaller motor (e.g., 2.2kW 3kW) would likely be more cost-effective.

### **Recommendation:**

- **Buy if:** You need a **high-torque, high-speed motor** for **industrial, commercial, or agricultural machinery** where reliability and power are non-negotiable. Ensure your power supply can handle the 4.8kW load and that you have access to proper maintenance.

- **Avoid if:** Your application requires **lower power**, operates intermittently, or has **strict budget constraints**. In such cases, a smaller motor or a variable-speed alternative may be more appropriate.

- **Consider alternatives:** If cost is a concern, explore **VFD-compatible motors** or **lower-power models** that still meet your speed and torque requirements. Always verify compatibility with your existing system before purchasing.

Details:

Traction encoder, brake coil, and internal sensor plugs are broken but wires still there. Drive motor removed from unit that was scrapped due to damaged drive.

part #: 021187 prices

  • $400.00-$1500.00

specifications oelemot:

  • brand: Crown
  • mpn: 021187
  • model: A7a108
  • part type: Motor
  • actual rated input voltage: 36 V
  • current type: Dc
  • ac frequency rating: 58.3 Hz
  • base rpm: 1690 Rpm
  • mounting type: Base-mounted

payments oelemot:

  • wallet: Google-pay
  • credit card: Visa
  • other
  • money order

seller oelemot:

  • # reviews: 83
  • city: San Bernardino, California
  • rating: 0.0%

returns oelemot:

  • policy: No Returns

general oelemot:

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

offer oelemot:

  • availability: In Stock
  • best offers: True
  • started: April 14, 2026
  • sold: 0
  • quantity: 1
  • options: Seller-arranged-local-pickup

shipping oelemot:

part type: motor, actual rated input voltage: 36 v, current type: dc, ac frequency rating: 58.3 hz, base rpm: 1690 rpm, mounting type: base-mounted,
category: business & industrial > industrial automation motion controls > electric > general purpose, sku: 21509624166098772,
Crown 021187 Is Similar To:
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2 offers $400.00–$1500.00 USD
  • Used. Offer #1 priced at $400.00 + $Calculated shipping estimate = $400.00* total. Traction encoder, brake coil, and internal sensor plugs are broken but wires are still there Drive motor removed from unit that was scrapped due to damaged drive unit.+$Calculated shipping
  • Seller refurbished. Offer #2 priced at $1500.00 + $226.72 shipping estimate = $1726.72* total. Picture shown is a core.+$226.72 shipping

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