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MARATHON ELECTRIC A063129 Stearns Brake 25FT-LB 87000 NEMA2 230/460VAC 108703100EQF

108703100eqf Marathon Electric A063129 25ft-lb Stearns 87000 Series Nema2 230/460vac Brake

( Brand: Marathon Electric ), ( Manufacturer Part Number: A063129 ), ( Part Type: Brake ), ( Actual Rated Input Voltage: 460 V ), ( Full Load Amps: 8.8 ), ( Inverter/vector Duty Rating: Inverter Duty ), ( Rated Load: Hp ), ( Ac Frequency Rating: 60 Hz ), ( Enclosure Type: Tefc ), ( Base Rpm: 1800 ), ( Shaft Type: Keyed ), ( Ac Motor Type: Induction/asynchronous ), ( Insulation Class: F ), ( Mounting Type: Foot-mounted ), ( Reversible/non-reversible: Reversible ), ( Current Type: Ac ), ( Service Factor: 1.15 ), ( Ac Phase: Three Phase )

Review MARATHON ELECTRIC 25ft-lb Stearns 87000 Series 230/460vac Brake

The **Marathon Electric A063129 25 ft-lb Stearns 87000 NEMA 230/460VAC Brake Motor** is a high-performance, industrial-grade electric motor designed for demanding applications requiring reliability, efficiency, and robust torque delivery. Part of Marathon s renowned **Stearns** line a trusted name in heavy-duty machinery this motor combines precision engineering with durable construction to ensure long-term operational excellence. Built with a **25 ft-lb starting torque**, it excels in applications where high inrush power and consistent performance are critical, such as conveyors, pumps, compressors, and material handling systems. The motor operates seamlessly across **230VAC or 460VAC** configurations, offering versatility for different voltage requirements in industrial settings, while its **NEMA 23 frame size** ensures compatibility with standard industrial mounting systems and accessories.

At the heart of this motor lies a **108703100EQF** brake unit, a critical component for safety and operational control in applications where sudden stops or emergency shutdowns are necessary. The **Stearns 87000 series brake** integrates seamlessly with the motor, providing reliable holding power and smooth engagement to prevent unintended movement, thereby enhancing workplace safety and equipment longevity. The brake mechanism is engineered for durability, featuring high-temperature-resistant materials and a robust spring design that maintains consistent performance even under harsh environmental conditions. This motor is also equipped with **Marathon s advanced winding technology**, utilizing high-quality copper conductors and premium insulation to minimize energy loss and maximize efficiency, reducing operational costs over time.

Constructed with **Marathon s signature attention to detail**, this motor incorporates features such as **sealed bearings** to reduce friction and extend service life, as well as a **corrosion-resistant coating** to protect against moisture, dust, and chemical exposure, making it ideal for both indoor and outdoor industrial environments. The **NEMA-premium efficiency** rating further underscores its commitment to energy conservation, delivering optimal performance while minimizing power consumption. Whether deployed in manufacturing plants, mining operations, or large-scale processing facilities, this motor stands as a testament to Marathon Electric s legacy of innovation and dependability, offering a perfect blend of power, precision, and endurance for the most rigorous industrial challenges.

### **Pros and Cons of buying a Marathon Electric A063129 (25 ft-lb Stearns 87000 NEMA 230/460VAC Brake Motor, Part #108703100EQF)**

#### **Pros**

1. **High Torque and Power** The 25 ft-lb torque rating makes this motor well-suited for heavy-duty applications, such as conveyors, mixers, or industrial machinery where starting torque is critical.

2. **NEMA Premium Efficiency** The motor meets NEMA Premium efficiency standards, meaning it consumes less energy while maintaining performance, which can reduce operational costs over time.

3. **Dual Voltage (230/460VAC)** The ability to operate on both 230V and 460V provides flexibility for different industrial setups without needing a separate motor.

4. **Built-in Brake** The electric brake (part of the Stearns 87000 series) allows for precise stopping and holding, which is beneficial in applications requiring safety stops (e.g., conveyors, elevators, or material handling).

5. **Reliable Brand** Marathon Electric is a well-established manufacturer known for durable, long-lasting industrial motors, reducing the risk of frequent failures.

6. **Standard NEMA Frame (likely 143T or similar)** The motor fits common industrial mounting configurations, making installation easier in existing systems.

7. **Good for High-Speed Applications** The 87000 series is designed for moderate to high-speed operations, making it suitable for continuous-duty use.

8. **Available Spare Parts & Support** As a legacy brand, Marathon motors have a strong aftermarket support system, ensuring parts and service are available if needed.

#### **Cons**

1. **Older Technology (Legacy Design)** This motor is part of Marathon s older Stearns 87000 series, which may lack some modern efficiency and smart control features found in newer motors (e.g., variable frequency drive compatibility, energy monitoring).

2. **Potential Higher Energy Consumption Than Premium Alternatives** While it meets NEMA Premium standards, some newer motors (e.g., IE3 or IE4) may offer even better efficiency, leading to further cost savings.

3. **Limited Smart Features** Unlike modern motors with built-in sensors or communication protocols (e.g., Modbus, Profibus), this motor may require additional instrumentation for advanced monitoring.

4. **Potential Lead Times on Parts** As Marathon has shifted focus to newer lines (e.g., Marathon Premium Efficiency or other brands), some legacy parts may have longer lead times or higher costs.

5. **Higher Upfront Cost Compared to Basic Motors** While durable, the premium efficiency and brake features make this motor more expensive than standard NEMA motors without these attributes.

6. **Compatibility with Older Control Systems** If integrating with modern PLCs or VFDs, some additional wiring or adapters may be needed to ensure seamless operation.

7. **Weight and Size** Industrial motors, especially those with brakes, can be heavy and bulky, which may complicate installation in space-constrained environments.

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### **Conclusion**

The **Marathon Electric A063129 (Stearns 87000 series)** is a **reliable, high-torque motor** well-suited for **heavy-duty, continuous-duty applications** where braking and efficiency are priorities. Its **dual-voltage capability, built-in brake, and NEMA Premium efficiency** make it a strong choice for industries like manufacturing, material handling, or food processing. However, if **energy savings, smart features, or future-proofing** are critical, newer motors (e.g., IE3/IE4 or VFD-compatible models) may offer better long-term benefits despite a slightly higher initial cost.

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### **Recommendation**

**Buy this motor if:**

- You need a **durable, high-torque motor** for a **legacy or existing system** where compatibility is key.

- Your application requires **precise stopping** (e.g., conveyors, mixers, or safety-critical machinery).

- You operate in a **230V or 460V environment** and need flexibility.

- You prioritize **Marathon s reputation for reliability** over cutting-edge efficiency features.

**Consider alternatives if:**

- You want **higher energy efficiency** (look for IE3/IE4 motors or energy-saving VFDs).

- You need **smart motor controls** (e.g., remote monitoring, predictive maintenance).

- You plan to **upgrade to a modern control system** (some newer motors integrate more easily with VFDs).

- You re working in a **space-constrained environment** where weight and size are concerns.

**Final Verdict:** This motor is a **solid, long-lasting choice** for traditional industrial applications where performance and reliability outweigh the need for the latest efficiency innovations. However, if budget allows, evaluating newer models with better energy ratings could provide additional savings over time.

Details:

25FT-LB STEARNS 87000 Series NEMA2 230/460VAC Brake 108703100EQF.

part #: a063129 price

  • $5500.00

specifications oelemot:

  • brand: Marathon Electric
  • mpn: A063129
  • part type: Brake
  • actual rated input voltage: 460 V
  • full load amps: 8.8
  • inverter/vector duty rating: Inverter Duty
  • rated load: Hp
  • ac frequency rating: 60 Hz
  • enclosure type: Tefc
  • base rpm: 1800
  • shaft type: Keyed
  • ac motor type: Induction/asynchronous
  • insulation class: F
  • mounting type: Foot-mounted
  • reversible/non-reversible: Reversible
  • current type: Ac
  • service factor: 1.15
  • ac phase: Three Phase

general oelemot:

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

offer oelemot:

  • started: March 29, 2026
  • options: Ship-to-home
  • best offers: True
  • sold: 0
  • quantity: 1
  • availability: In Stock

returns oelemot:

  • policy: No Returns

payments oelemot:

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

seller oelemot:

  • # reviews: 0
  • city: Simi Valley, California
  • rating: 0.0%

shipping oelemot:

  • type: Calculated
  • cost: $62.49
  • class: Standard
  • transit: 5-12 Days
  • carrier: USPS
  • service: USPS Ground Advantage
part type: brake, actual rated input voltage: 460 v, full load amps: 8.8, inverter/vector duty rating: inverter duty, rated load: hp, ac frequency rating: 60 hz, enclosure type: tefc, base rpm: 1800, shaft type: keyed, ac motor type: induction/asynchronous, insulation class: f, mounting type: foot-mounted, reversible/non-reversible: reversible, current type: ac, service factor: 1.15, ac phase: three phase,
category: business & industrial > industrial automation motion controls > electric > general purpose, sku: 21223031545770813,
Marathon Electric A063129 Is Similar To:
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1 offer $5500.00 USD
  • New – Open box. Offer #1 priced at $5500.00 + $Calculated shipping estimate = $5500.00* total. MOTOR W/ BRAKE, 230/460V, 13.4/6.7A, 5400RPM, 5HP.+$Calculated shipping

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