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AO Smith B129 1-1/2 HP pool pump motor, C-face 56J frame, stainless steel shaft

AO Smith

AO Smith B129 1-1/2 HP 230/115V 56J Frame C-Face Pool Motor

SKU CH-5KA5-8JQGZ

1-1/2 HP dual-voltage pool pump motor with 56J C-face mount and 305 stainless steel shaft

  • Product typePool Pump Motors
  • 1-1/2 HP motor powers pool and spa pumps
  • Dual 230/115 volt operation suits varied installations
  • 56J frame with C-face mount fits standard equipment
  • 305 stainless steel shaft resists corrosion in wet environments
  • First listed by manufacturer June 26 2022

Product identity

The AO Smith B129 is a 1-1/2 horsepower pool pump motor built for residential and light-commercial swimming pools and spas. It operates on dual-voltage 230/115 volt supplies and fits a 56J frame with a C-face mounting pattern.

Deciding specification

The 56J frame with C-face mounting decides whether this motor bolts to your existing pump housing. Verify the frame and face match the nameplate on the unit you are replacing before ordering.

Installation reality

Wiring is straightforward on the dual-voltage terminal board, but the 305 stainless steel shaft requires a compatible seal plate and impeller to prevent leaks. Misaligned C-face bolts or an incorrect voltage jumper setting are the most common causes of early failure.

How it compares

Measured against everything we stock in Pool Cleaners & Maintenance Supplies, at today’s prices. Recalculated every night.

Price $418.99
Pricier than about 85% of the 207 comparable items (median $100.99).

Specifications

Product
Product typePool Pump Motors

Questions about this item

What does the 1-1/2 HP rating mean once the motor is installed on a pool pump?

The 1-1/2 horsepower rating indicates the mechanical power the motor delivers to the pump impeller, determining the flow rate and pressure your filtration system can achieve.

How does the 230/115 Volt dual-voltage design affect the wiring and circuit requirements?

The motor can be configured for either 230 Volt or 115 Volt supply; the installer must select the correct internal wiring connections and match the circuit breaker to the chosen voltage.

What does the 56J frame with C-face mounting require for installation?

The 56J frame defines the shaft height and bolt pattern, while the C-face provides a threaded flange that bolts directly to a compatible pump seal plate.

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