AO Smith Century UST1102 1 HP replacement pool motor with 56J Frame, threaded shaft, and round flange.
Technical data plate for AO Smith UST1102 1 HP motor showing wiring diagram, 115/230V specs, and 56J frame details.
Rear view of AO Smith UST1102 pool motor showing the cooling ventilation and access point for electrical wiring.
Front view of AO Smith UST1102 motor showing the 56J round flange mounting holes and the stainless steel threaded shaft.

AO Smith Swimming Pool Motor, Threaded Shaft, Round Flange, 1 HP - UST1102

$279.99
$279.99
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Product Description

The AO Smith Century UST1102 is a powerhouse 1 HP replacement motor designed for the most popular pool pumps on the market. Featuring a 56J Frame with a threaded shaft and round flange, this motor is a direct replacement for many Hayward, Pentair, and Jacuzzi pumps. With its dual-voltage capability and high service factor, it delivers reliable, quiet performance season after season.

🚩 PRO TIP: When replacing your motor, we strongly recommend replacing your pump's shaft seal and O-rings at the same time. Reusing an old seal can lead to water leaks that will quickly damage the bearings of your brand-new motor.

PRODUCT FEATURES:

  • VERSATILE 1 HP POWER: Engineered for consistent performance in residential and commercial pool filtration systems.
  • DUAL VOLTAGE FLEXIBILITY: Ships ready for 230V but can be easily toggled to 115V to match your existing pool timer or sub-panel setup.
  • THREADED SHAFT (56J FRAME): Features a stainless steel threaded shaft for a secure fit and easy installation of the pump impeller.
  • SUPERIOR COOLING: Designed with high-quality ventilation to prevent overheating and extend the life of the internal windings.
  • ENERGY EFFICIENT: Features a 1.10 Service Factor, ensuring the motor runs cooler and more efficiently than standard "up-rated" motors.

TECHNICAL SPECIFICATIONS:

  • Brand: AO Smith / Century
  • Model: UST1102
  • Horsepower: 1.0 HP
  • Voltage: 115V / 230V
  • Frame: 56J (Round Flange)
  • Shaft: Threaded
  • Service Factor: 1.10

WHY SHOP WITH AL'S COOL POOL STORE?

  • Quality Assured: We only stock industry-leading brands like AO Smith (Century) to ensure your pool equipment is built to last.
  • In-Stock & Ready: We keep these motors in our warehouse for immediate shipping so you can get your pool back up and running fast.
  • Expert Support: We know pool equipment. If you aren't sure if the UST1102 is the right fit for your pump, we’re here to help.
  • Satisfaction Guaranteed: We stand behind the reliability of every motor we sell.