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Small transparent unit bearing motor with cast aluminium frame

Dayton

Dayton 4YFJ4 Unit Bearing Motor 1/185 hp 230V AC

SKU CH-QRMF-SGWR0

A shaded-pole unit bearing motor delivers 1/185 hp at 1,550 rpm on 230 V AC for HVAC fan and blower applications

  • Product colorTransparent
  • Low power draw with 0.17 A full-load current
  • Compact 4 W output fits tight HVAC spaces
  • Shaded-pole design gives simple single-phase operation
  • Totally enclosed air-over enclosure protects internals
  • Cast-aluminium frame handles up to 40 °C ambient

Unit Bearing Motor for HVAC Controls

The Dayton 4YFJ4 is a shaded-pole motor rated at 1/185 hp and 230V AC for HVAC control applications. It delivers a nameplate speed of 550 rpm with 4 watts of output power. The totally enclosed air-over design suits horizontal or vertical shaft-up mounting. A cast aluminium frame houses the rear-foot mounting arrangement.

230V AC Single-Phase Power Requirement

This motor operates on 230V AC at 50/60 Hz and draws 0.17 A at full load. The single-phase shaded-pole design needs no external capacitor or starter. Impedance thermal protection and Class A insulation handle ambient temperatures up to 40 degrees C. Verify that the supply matches these exact voltage and frequency values before installation.

Rear-Foot Mount with Fixed CWLE Rotation

The rear-foot cast aluminium frame bolts directly to compatible HVAC housings. Rotation is fixed clockwise from the lead end, so the driven fan or blower must match this direction. The non-standard frame means dimensions differ from common NEMA sizes; confirm bolt pattern and shaft fit against the original equipment. No alternative mounting positions or rotation options are available.

How it compares

Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.

Price $23.99
Cheaper than about 69% of the 1,762 comparable items (median $45.99).

Specifications

Product
Brand nameDAYTON
Product colorTransparent

Questions about this item

What does the 1/185 hp rating mean for airflow in a real HVAC unit?

The 1/185 hp output delivers 4 watts at 1,550 RPM, suitable for small direct-drive fan or blower wheels in residential HVAC equipment.

How does the 230V AC, 60/50 Hz supply affect motor performance?

The shaded-pole design runs at nameplate speed on both 60 Hz and 50 Hz mains, drawing 0.17 A full-load current at 230 V AC.

What clearance and orientation does the rear-foot, cast-aluminium frame require?

The motor mounts horizontally or with the shaft vertical-up on its rear foot pattern; the totally enclosed air-over body needs surrounding airflow and fits within a 40 °C maximum ambient.

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