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BN51 2-Speed Pump Motor 48Y Frame 2 HP Thru Bolt 230V

Availability: In Stock Ships Today

Regular Price: $299.99

Sale Price $243.99

You Save: $56.00  (18%)

Quick Overview

The AO Smith BN51 Pool Pump Motor is a 2-Speed motor with a high speed of 2 horsepower and a low speed of 1/4 horsepower. The BN51 is a thru-bolt style motor with a 48Y Frame and has a 1/2 inch diameter shaft with 3/8 inch threads on the end. Thru-Bolt style motors are most commonly used on Hayward Power-Flo pumps (all power-flo styles), Pentair Dynamo and OptiFlo pumps, AquaFlo Flo-Master, FMHP, FMCP, Tub-Master and several other hot tub pumps.

Details

It is important to know that pool pump motors are not manufactured by the pump manufacturer, the motor will usually be manufactured by AO Smith, Magnetek or Centurion. Your pump's motor should have a label or faceplate on it which includes the information you need to replace your pump motor. The most important categories to note will be the horsepower (hp), motor frame (fr), voltage and service factor (sf). Some labels will provide you with a model number and it will usually be listed as CR or CAT.

  • 2 Speed Pump
  • High Speed: 2 Horsepower
  • Low Speed: 1/4 Horsepower
  • Service Factor: 1
  • 230 Volts
  • 10.5 / 2.6 amps
  • Mounting: Thru-Bolt
  • Frame: 48Y
  • Rigid Base Mount Welded to Motor Case
  • Automatic overload protection
  • Rotation: CWLE

 

Cross Reference: 181429, 182477, 182864, 182873, 184169, 186548, C1327, 17521, 8-182477-01, 8-182477-40, 7-182477-02, 7-182477-82, 5KCR39UN2904X, 18247700, 718247702, 3420820, 3051310, 718247702


When replacing your pool pump motor you should always replace the shaft seal as well. The shaft seal is a 2 part piece made of rubber, metal and ceramic and keeps water from entering the pump motor. It is located near the impeller at the end of the motor shaft. Shaft seals vary between pumps so be sure to order the appropriate shaft seal for your pump. 

Additional Information
Delivery Time 2-5 Business Days
Manufacturer AO Smith
Technical Specs

Model: BN51
Style: Thru-Bolt
Shaft: 1/2" Diameter with 3/8" threads
Frame: 48Y NEMA
Horsepower: High - 2 HP / Low - 1/4 HP
RPM: 3450
Voltage: 115V
Amperage: 10.5 / 2.6 amps
Warranty: 1 Year from date of install

Works with the following pumps:
Hayward Power-Flo
Pentair Dynamo
Pentair OptiFlo
Pentair Maxim
AquaFlo Flo-Master XP / XP2 / XP2E 48-Frame
AquaFlo Flo-Master FMHP Series Side Discharge Spa Pump
AquaFlo Flo-Master FMCP Series Center Discharge Spa Pump
AquaFlo Tub-Master TMCP Series 100% Drain Bathtub Pump
Waterway Spa Flo/Iron Might 48-Frame Pump
Waterway Supreme 48-Frame Above Ground Pump
Waterway Workman 48-Frame Above Ground Pump
Waterway Hi-Flo Series Pump
Waterway Center Discharge Spa Pump
Waterway EX2 Spa Pump 48-Frame

Cross Reference: 181429, 182477, 182864, 182873, 184169, 186548, C1327, 17521, 8-182477-01, 8-182477-40, 7-182477-02, 7-182477-82, 5KCR39UN2904X, 18247700, 718247702, 3420820, 3051310, 718247702

SKU MGT-60-5201
Manufacturer Part # BN51
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