BALDOR 6B78K7053 Ac Motor 56YZ 3/4HP 1750RPM 230/460V-AC 3PH

( Brand: Baldor ), ( Manufacturer Part Number: 6B78K7053 ), ( Part Type: Ac Motor ), ( Frame: 56yz ), ( Power: 3/4 Hp ), ( Rpm: 1750 Rpm ), ( Voltage: 230 V-ac, 460 V-ac ), ( Phase: 3ph ), ( Reference Sku: 1749340 ), ( Product Condition: Used Excellent )

Review BALDOR Ac Motor 3/4hp 1750rpm 230/460v-ac 3ph

The **Baldor 6B78K7053 AC Motor** is a robust, high-performance electric motor engineered for reliability, efficiency, and durability in demanding industrial applications. Part of Baldor s trusted line of premium fractional to medium horsepower motors, this **3/4 horsepower (0.75 kW), three-phase AC induction motor** delivers consistent performance across a wide range of machinery, including conveyors, pumps, compressors, and industrial fans. With a **synchronous speed of 1750 RPM**, it strikes an optimal balance between torque and speed, ensuring smooth operation while maintaining energy efficiency. Built to NEMA Premium standards, this motor exceeds industry benchmarks for energy savings, reducing operational costs and environmental impact over its lifespan.

The **6B78K7053** features a **frame size 56YZ**, a compact yet sturdy design that maximizes torque while minimizing footprint, making it ideal for space-constrained applications. Its **230/460V AC, three-phase voltage rating** provides flexibility for integration into various electrical systems, accommodating both standard and high-voltage setups without compromising performance. The motor s **TEFC (Totally Enclosed Fan-Cooled)** construction ensures protection against dust, moisture, and corrosive environments, making it suitable for harsh industrial settings where reliability is critical. A high-quality **ball bearing assembly** supports the rotor, reducing friction and extending the motor s operational life, while the **class F insulation** enhances thermal resistance, allowing for continuous operation under heavy loads.

Designed with precision engineering, the **Baldor 6B78K7053** incorporates advanced features such as **low vibration and noise levels**, ensuring quieter operation and reduced maintenance requirements. Its **high-efficiency rotor and stator windings** optimize power conversion, delivering superior torque output while minimizing energy waste. The motor s **NEMA Premium certification** further underscores its commitment to sustainability, offering up to **10% better energy efficiency** compared to standard motors, leading to lower electricity bills and a reduced carbon footprint. Whether used in manufacturing plants, HVAC systems, or material handling equipment, this motor provides a dependable power source that adapts seamlessly to diverse industrial demands.

Built to last, the **6B78K7053** incorporates **corrosion-resistant materials** and **sealed bearing shields**, enhancing longevity in challenging environments. Baldor s reputation for quality assurance is reinforced by rigorous testing protocols, ensuring that each motor meets or exceeds industry standards for performance, safety, and durability. With its **compact yet powerful design**, **energy-efficient operation**, and **rugged construction**, this motor is an excellent choice for applications requiring a balance of performance, reliability, and cost-effectiveness. Whether integrated into new machinery or retrofitted into existing systems, the **Baldor 6B78K7053 AC Motor** delivers the performance engineers and operators depend on for years of trouble-free service.

### **Baldor 6B78K7053 AC Motor Overview**

The **Baldor 6B78K7053** is a **3/4 HP, 1750 RPM, 3-phase AC motor** rated for **230/460V**. It is a **TEFC (Totally Enclosed Fan-Cooled)** motor, meaning it is sealed to prevent dust and moisture ingress while using a fan for internal cooling. This motor is commonly used in industrial applications such as pumps, compressors, conveyors, and small machinery.

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### **Pros of buying a Baldor 6B78K7053 Motor**

1. **Reliability and Durability**

Baldor is a well-established brand known for manufacturing high-quality, long-lasting motors. The **TEFC design** ensures protection against harsh environments, making it suitable for industrial settings where dust, moisture, or corrosive elements may be present.

2. **Energy Efficiency**

Baldor motors are designed with energy-efficient features, including optimized windings and high-quality materials. While not a premium energy-efficient model (like IE3 or IE4), it performs well within its rated specifications, reducing unnecessary energy consumption compared to older, less efficient motors.

3. **Compatibility with Common Industrial Systems**

The **1750 RPM speed** and **3/4 HP rating** make it ideal for small to medium-sized applications where moderate torque and speed are required. It is compatible with standard **3-phase, 60Hz power supplies**, making it easy to integrate into existing systems.

4. **Aftermarket Availability and Support**

Baldor is a trusted brand with widespread availability of replacement parts, making maintenance and repairs easier. Many distributors and industrial suppliers stock Baldor motors, ensuring quick access to spare components if needed.

5. **Cost-Effective for Standard Applications**

While not the cheapest motor on the market, it offers a **good balance between performance and price** for general-purpose industrial use. It is often more affordable than premium efficiency motors while still delivering reliable service.

6. **Low Maintenance Requirements**

The **TEFC enclosure** reduces the need for frequent cleaning or lubrication, as it is sealed against contaminants. This contributes to longer operational life with minimal upkeep.

7. **Compatibility with Variable Frequency Drives (VFDs)**

If used with a VFD, this motor can be adjusted for speed control, making it versatile for applications requiring variable torque and speed. However, ensure the motor is suitable for VFD operation (some motors may require special windings).

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### **Cons of buying a Baldor 6B78K7053 Motor**

1. **Not Energy-Efficient by Modern Standards**

This motor does not meet **IE3 or IE4 efficiency standards**, which are now common in newer, more energy-conscious applications. If energy savings are a priority, a premium efficiency motor may be more cost-effective in the long run.

2. **Limited Torque at Low Speeds**

At **1750 RPM**, this motor may struggle with high-load applications requiring significant starting torque. If the application involves frequent starts under load (e.g., pumps with high head pressure), a motor with higher torque characteristics (such as a **NEMA Design B or C**) may be necessary.

3. **Potential for Higher Operating Temperatures**

While TEFC motors are well-cooled, in extreme environments (e.g., high ambient temperatures or poor ventilation), the motor may run hotter than expected. This could shorten its lifespan if not properly monitored.

4. **Dependence on 3-Phase Power**

This motor **requires a 3-phase power supply**, which may not be available in all locations. If only single-phase power is accessible, an alternative motor or a phase converter would be needed, adding complexity and cost.

5. **Limited Customization Options**

Baldor offers a wide range of standard motors, but this specific model may not include advanced features such as **built-in protection relays, digital sensors, or special enclosures** (e.g., explosion-proof). Customization would require additional components or modifications.

6. **Potential for Higher Initial Cost Than Basic Motors**

While not excessively expensive, it is more costly than the most basic **open or dripproof motors**, which may be sufficient for less demanding applications.

7. **Compatibility Issues with Older Systems**

If integrating into an older system, ensure the motor s **mounting dimensions, shaft size, and electrical connections** match the existing setup. Baldor motors follow standard NEMA dimensions, but verification is always recommended.

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### **Conclusion**

The **Baldor 6B78K7053** is a **reliable, mid-range motor** well-suited for **standard industrial applications** where **durability, moderate efficiency, and ease of maintenance** are priorities. It excels in environments where **dust, moisture, or moderate vibration** are concerns due to its **TEFC enclosure**. However, it is **not the most energy-efficient option** and may require additional components (such as VFDs or phase converters) for certain applications.

If the application involves **high starting torque, extreme environments, or energy-sensitive operations**, a different motor (e.g., a **premium efficiency model, explosion-proof motor, or one with higher torque characteristics**) may be more appropriate.

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### **Recommendation**

- You need a **reliable, mid-sized motor** for **general industrial use** (e.g., pumps, fans, conveyors).

- Your application requires **protection against dust and moisture** (TEFC enclosure).

- You are working within a **3-phase power system** and do not need premium efficiency.

- You prioritize **availability of parts and brand reputation** for long-term reliability.

- **Energy efficiency** is a critical factor (opt for an **IE3 or IE4 motor**).

- The application requires **high starting torque or variable speed control** (consider a **NEMA Design C motor or one with a VFD**).

- The environment involves **extreme temperatures or corrosive conditions** (look for a **higher IP-rated or explosion-proof motor**).

- You are operating on **single-phase power** (a phase converter or single-phase motor would be needed).

For most **standard industrial applications**, the **Baldor 6B78K7053 is a solid choice** that balances **performance, durability, and cost-effectiveness**. However, always verify **load requirements, environmental conditions, and power supply compatibility** before finalizing the purchase.

Details:

Solenoid Valves. Circuit Breakers. Motor Drives. Motor Starters.

Shock Absorbs. Safety and Security. Solenoid Coils.

part #: 6b78k7053 prices

• $333.88-$1320.40

specifications oelemot:

• brand: Baldor
• mpn: 6b78k7053
• part type: Ac Motor
• frame: 56yz
• power: 3/4 Hp
• rpm: 1750 Rpm
• voltage: 230 V-ac, 460 V-ac
• phase: 3ph
• reference sku: 1749340
• product condition: Used Excellent

offer oelemot:

• started: March 10, 2026
• options: Ship-to-home
• best offers: True
• quantity: 1
• availability: In Stock
• sold: 0

returns oelemot:

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

seller oelemot:

• rating: 100.0%
• city: Delta, Ohio
• # reviews: 125007

general oelemot:

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

shipping oelemot:

• service: Standard, Expedited, Overnight
• cost: $0.00
• transit: 5-5 Days
• class: Standard, Expedited, One-day
• type: Fixed

payments oelemot:

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

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