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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.

How it compares

Measured against everything we stock in Pumps, Sprayers & Pump Accessories, at today’s prices. Recalculated every night.

Price $538.99
Pricier than about 90% of the 962 comparable items (median $38.99).

Specifications

Product
Brand nameDAYTON

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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