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  3. CENTURY AO SMITH H491

CENTURY AO SMITH H491 Motor Flange 786674013163 1/2

H491 Century Ao Smith Motor 1/2 Hp Sq Flange Full

( Brand: Century Ao Smith ), ( Manufacturer Part Number: H491 ), ( Type: Centurion In-ground Square Flange Motors ), ( UPC: 786674013163 )

Review CENTURY AO SMITH Motor 1/2 Hp Sq Flange Full

The Century AO Smith H491 Motor is a 1/2 HP, single-phase, 120-volt, flanged electric motor designed for various industrial and commercial applications. This motor is manufactured by Century AO Smith, a leading name in the field of electric motors and pumping systems.

The H491 Motor features a cast iron construction, ensuring durability and longevity. Its compact design makes it suitable for installation in confined spaces. The motor's 1/2 HP rating makes it a versatile option for handling moderate loads in applications such as pumps, fans, and conveyor systems.

The motor's single-phase, 120-volt power requirement makes it a convenient choice for applications where a standard power source is available. This motor operates at a voltage of 120 volts and a frequency of 60 Hz. Its full load speed is 1750 RPM, providing efficient performance for a range of applications.

The H491 Motor comes with a flanged design, which allows it to be easily coupled with various types of equipment, such as pumps and fans. The motor's shaft is 56mm in length and comes with a keyed end, ensuring secure and reliable coupling. The motor's frame size is TEFC (Totally Enclosed Fan Cooled), which provides effective cooling while also protecting the motor from environmental contaminants.

The Century AO Smith H491 Motor is built to the highest standards of quality and reliability. It is backed by a comprehensive warranty, providing customers with peace of mind and confidence in their investment. This motor is a reliable workhorse, delivering consistent and efficient performance in a wide range of industrial and commercial applications.

Pros and Cons of Buying Century AO Smith H491 1/2 HP Flange Motor

The Century AO Smith H491 1/2 HP Flange Motor is a popular choice for various water heating applications. This motor comes with several advantages and disadvantages that can help you make an informed decision before making a purchase.

Pros:

1. High-quality construction: The motor features a cast iron frame and a heavy-duty, sealed ball bearing design that ensures durability and longevity.

2. Versatile application: This motor can be used for both pump and fan applications, making it a versatile option for various systems.

3. Easy installation: The motor features a convenient flange design, making it easy to install and connect to other components.

4. Energy efficiency: The H491 motor is designed to operate efficiently, which can help reduce energy consumption and save money on utility bills.

5. Wide voltage range: The motor can operate on a wide range of voltages (115V to 230V), making it a flexible option for various electrical systems.

Cons:

1. Heavier than some alternatives: Due to its heavy-duty construction, the H491 motor is heavier than some alternative motors, which may require additional support during installation.

2. Higher upfront cost: The motor's high-quality construction and features come at a higher price point than some other motors on the market.

3. Limited speed options: The H491 motor does not offer variable speed options, which may limit its application for certain applications that require speed control.

Conclusion:

The Century AO Smith H491 1/2 HP Flange Motor offers several advantages, including high-quality construction, versatility, easy installation, energy efficiency, and a wide voltage range. However, it also comes with some disadvantages, such as its higher weight, upfront cost, and lack of variable speed options. Ultimately, if durability and reliability are your top priorities, and you require a motor for general water heating applications, the H491 motor may be a worthwhile investment. If you need a motor with more customizable speed options or a lower upfront cost, you may want to consider alternative options.

Recommendation:

If you are looking for a reliable, high-quality motor with a flange design for water heating applications and don't require variable speed options, the Century AO Smith H491 1/2 HP Flange Motor is an excellent choice. However, if you need a motor with more customizable speed options, a lower upfront cost, or a lighter weight, you may want to explore other motor options on the market. Make sure to carefully consider your specific application requirements and budget before making your final decision.

Details:

Manufacturer Part Number: H491. Brand: Century AO Smith. volts : 115/208-230 Amps: 8.8/5-4.4 Service Factor: 1.9 Frame: 56Y C-Dimension: 12.44. Shipping carriers include, USPS, FedEx and UPS.

Buyer: C R 495 Useful Links.

part #: h491 prices

  • $307.10-$392.22

specifications poolmaintgo:

  • brand: Century Ao Smith
  • mpn: H491
  • type: Centurion In-ground Square Flange Motors
  • upc: 786674013163

general poolmaintgo:

  • condition: New
  • Pools Spas > Pool Equipment Parts > Other Pool Equipment Parts

payments poolmaintgo:

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

returns poolmaintgo:

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

shipping poolmaintgo:

  • class: Standard
  • type: Fixed
  • transit: 3-8 Days
  • service: Standard
  • cost: $0.00

seller poolmaintgo:

  • rating: 99.1%
  • city: Frederick, Maryland
  • # reviews: 14641

offer poolmaintgo:

  • availability: In Stock
  • sold: 0
  • started: September 22, 2025
  • options: Ship-to-home
type: centurion in-ground square flange motors,
category: home & garden > pools spas > pool equipment parts, sku: 15868395633018761,
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5 offers $307.10–$392.22 USD
  • New. Offer #1 priced at $392.22 + $0.00 shipping estimate = $392.22* total. Mounting: Round Motor Orientation: Horizontal. Speed: 3450 rpm Service Factor: 1.9.FREE SHIPPING
  • New. Offer #2 priced at $324.95 + $0.00 shipping estimate = $324.95* total. Smith 1/2 Hp Sq Flange Full Motor 1.90 Sf Energy Efficient B845, Century Century/A.O.FREE SHIPPING
  • New. Offer #3 priced at $307.10 + $0.00 shipping estimate = $307.10* total. Square Flange. 1 Phase (1ph).FREE SHIPPING
  • New. Offer #4 priced at $360.86 + $0.00 shipping estimate = $360.86* total. Rotation: Counterclockwise Pump End Mounting: Round. Phase: 1 Output HP: 1/2 Hp.FREE SHIPPING
  • New. Offer #5 priced at $557.33 + $0.00 shipping estimate = $557.33* total. UL Recognized and CSA Certified. Pool Pump Motor, Bolt Circle Dia.FREE SHIPPING

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