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Silver cylindrical pool pump motor with threaded shaft and round C-face flange

AO Smith

AO Smith UST1102 Pool Pump Motor 1 HP C-Face Round Flange

SKU CH-8BT0-WW234

Single-speed pool pump motor delivers 1 HP at 3450 RPM with dual-voltage 115/230 V operation and a 1.10 service factor

  • TypePool Pump Motors
  • Single-speed operation simplifies pool pump control
  • Dual-voltage 115/230 V design fits existing wiring
  • 10 service factor provides extra capacity for heavy loads
  • 56J frame with threaded shaft ensures direct replacement fit
  • 3450 RPM at 60 Hz delivers strong water circulation

Motor Type and Application

The AO Smith UST1102 is a single-speed pool pump motor rated at 1 HP for residential swimming pools. It operates on dual-voltage 115/230 V supplies at 60 Hz and draws 15.0/7.5 max amps. The 56J frame and C-face round flange suit standard pump housings.

Build Integration

A threaded shaft allows direct impeller attachment without extra couplers. The 1.10 service factor provides headroom for continuous duty under load. Wiring must match the selected voltage and the motor requires a compatible pump housing and overload protection.

Replacement Scope

This unit replaces a failed single-speed motor of the same frame, voltage and shaft configuration. The jump is worth it when the existing motor has seized bearings, burnt windings or lost prime. It does not add variable-speed control or energy-saving programmes.

Highlights

  • Single-speed operation simplifies pool pump control
  • Dual-voltage 115/230 V design fits existing wiring
  • 10 service factor provides extra capacity for heavy loads
  • 56J frame with threaded shaft ensures direct replacement fit
  • 3450 RPM at 60 Hz delivers strong water circulation

Specifications

TypePool Pump Motors

Questions about this item

How long before the 1.10 service factor becomes the limiting factor during continuous operation?

The 1.10 service factor allows temporary overload, but sustained use at full load will reach this limit first, reducing motor life if exceeded regularly.

What are the noise and heat levels when running at 3450 RPM all day on 230 volts?

At 3450 RPM and 7.5 max amps on 230 volts, the motor generates typical single-speed pump noise and heat; ensure adequate ventilation for continuous duty.

Which pump housing flange matches the 56J frame and threaded shaft on this motor?

You need a pump with a C-face round flange that accepts a 56J frame motor and a threaded shaft for the impeller to install this unit correctly.

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