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Black cylindrical pool pump motor with aluminium flange and stainless steel shaft

AO Smith

AO Smith Century B2852 3/4 HP 3450 RPM Pool Pump Motor

SKU CH-J1HG-AEWYH

3/4 HP single-speed pool pump motor with 3450 RPM, dual-voltage 115/230 V operation and 56Y flange mount for horizontal installation

  • Product typePool Pump Motors
  • 3/4 HP motor delivers strong pool circulation
  • 3450 RPM speed ensures efficient water turnover
  • Dual 115/230 V voltage fits existing wiring
  • 56Y frame with flange mount simplifies installation
  • UL Recognised and CSA Certified for safety compliance

Pool Pump Motor Replacement

The AO Smith Century B2852 is a single-speed pool pump motor rated at 3/4 HP and 3450 RPM. It operates on 115/230 V single-phase power at 60 Hz with full-load currents of 10.8/5.4 amps. The 56Y frame unit features a flange mount, CCW rotation and a 1/2-20 UNF-2A RH threaded shaft.

Suits Direct Swaps Only

This motor fits installations that require a 56Y frame, flange-mounted unit with a 3/4 HP service factor of 1.25. It is not for buyers who need variable-speed control, three-phase power input or a different shaft diameter or thread pattern. The horizontal flange mounting also rules out vertical-mount pump housings.

Straightforward Bolt-In Install

Installation involves matching the flange bolt pattern, wiring to the dual-voltage terminal board and threading the impeller onto the 303 stainless shaft. Common issues include wiring the motor for the wrong supply voltage and failing to verify that the replacement service factor equals or exceeds the original nameplate rating.

How it compares

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

Price $227.99
Pricier than about 67% of the 207 comparable items (median $100.99).

Specifications

Product
Product typePool Pump Motors

Questions about this item

What voltage supply must already be available for the B2852 motor?

The motor runs on 115 or 230 volts single-phase at 60 Hz, so the existing supply must match one of those voltages.

Will the 56Y frame and flange mount fit the pump housing I am keeping?

The 56Y NEMA frame with horizontal flange mounting and a 5/8 inch shaft diameter matches the common square-flange pattern used on many pool pumps.

How can I confirm the motor is running at the correct speed after installation?

With power applied the nameplate speed is 3450 RPM; a tachometer reading at or near that figure shows the motor is operating as intended.

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