AO Smith Century Centurion 1081 Series 2 HP 56Y-Frame Motor - B2855

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The AO Smith Century Centurion 1081 Series 2 Horsepower 56Y-Frame Motor B2855 combines the proven performance of the Century Centurion 56Y frame platform with the next generation of features for increased reliability, added performance, premium efficiency and serviceability.


  • Centurion "1081" Series Energy Efficient Motor
  • No-adjust start switch that is rated for over one million cycles for motor longevity
  • Unique electrical design with a unique, advanced cooling system that helps extend the life of the motor
  • Heavy-duty shaft made from 303-grade stainless steel helps prevent corrosion
  • EZ wrench access that doesn't require the removal of the wiring compartment canopy
  • Angled terminal makes wiring connections a breeze
  • Patented voltage change dial for easy voltage selection
  • Patented bonding lug for easy ground connections
  • Patented bearing lock clip for assured bearing retention
  • All motors are rated 115/208-230 +/-10% volts to handle voltage variations throughout the US and Canada
  • Double sealed bearings and, on shaft end, an integrated Patented SmithSealTM bearing protector to resist water damage
  • Rugged motor enclosure system for enhanced durability and premium protection against corrosion
  • A full class F insulation system and 50° C ambient capability for increased motor life over class B insulation systems


  • Brand: A.O. Smith
  • Series: Centurion Energy Efficient
  • HP: 2 Horsepower
  • Frame: 56Y
  • Flange: Square Flange
  • Service Factor: 1.10
  • Total Horsepower: 2.2
  • Volts: 230
  • Amps: 10.0
  • RPM: 3450
  • Shaft: Threaded
  • Up-Rated

Compatible for use with the following pumps:

  • Sta-Rite Max-E-Glas
  • Sta-Rite Max-E-Glas II
  • Sta-Rite Dura-Glas
  • Sta-Rite Dura-Glas II
  • Sta-RiteDyna-Glas
  • Sta-Rite Dyna-Max
  • Pentair Whisperflo
  • Pentair Challenger 
  • Pentair Pinnacle
  • Anthony AR2 Series
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