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Dayton 1YBV9 split-phase fan motor 1/2 HP 1725 RPM totally enclosed air-over cradle base

Dayton

Dayton 1YBV9 Split-Phase Fan Motor 1/2 HP 1725 RPM

SKU CH-HWBT-B79QN

Split-phase motor delivers 1/2 HP at 1725 RPM with 115/230 V dual voltage and continuous duty rating

  • 1/2 HP split-phase power drives agricultural fans
  • 115/230 V dual-voltage suits common farm wiring
  • 1725 RPM nameplate speed matches original equipment specs
  • Totally enclosed air-over design protects windings from dust and moisture
  • Auto thermal protection and 1.25 service factor extend motor life

Agricultural Split-Phase Motor

The Dayton 1YBV9 is a single-phase split-phase motor rated at 1/2 horsepower with a nameplate speed of 1725 RPM. It operates on dual-voltage 115/230V AC at 60 Hz and draws 7.6 amps at 115V or 3.8 amps at 230V. The 56-frame rolled-steel body uses a cradle-base mount for horizontal installation.

Upgrade From Shaded-Pole Or Worn Units

This motor replaces lower-torque shaded-pole designs or failed split-phase units in agricultural ventilation fans. The 1.25 service factor and Class B insulation make the jump worthwhile when the existing motor runs hot, trips thermal protection, or cannot sustain continuous duty at 40 °C ambient.

Continuous Duty In Dusty Air

Totally enclosed air-over construction keeps dust and moisture off the windings while the fan airstream cools the frame. Automatic thermal protection resets without intervention, and the reversible CW/CCW rotation simplifies wiring for either airflow direction. The motor is built for uninterrupted operation rather than short-cycle starts.

Highlights

  • 1/2 HP split-phase power drives agricultural fans
  • 115/230 V dual-voltage suits common farm wiring
  • 1725 RPM nameplate speed matches original equipment specs
  • Totally enclosed air-over design protects windings from dust and moisture
  • Auto thermal protection and 1.25 service factor extend motor life

Specifications

BrandDAYTON

Questions about this item

What are the shaft height and bolt pattern for the 56 frame cradle base on this motor?

The motor uses a standard NEMA 56 frame cradle base for horizontal mounting, matching the 56 frame dimensions for shaft height and bolt spacing.

Which wiring configuration matches the dual-voltage 115/230V nameplate and the reversible CW/CCW rotation?

Connect the leads per the nameplate diagram for 115V or 230V operation; swap the two designated leads to reverse rotation between clockwise and counter-clockwise.

When should the motor be replaced given the Class B insulation and 40°C maximum ambient temperature?

Replace the motor if insulation resistance drops below safe levels or if overheating occurs above the 40°C ambient limit, as Class B insulation has a finite thermal life.

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