Dayton
Dayton 4YFJ1 HVAC Control Unit Bearing Motor 1/47 hp 230V 16W
A shaded-pole unit-bearing motor rated at 1/47 hp and 16 W output for 230 V AC HVAC controls
- ColorTransparent
- 1/47 hp motor delivers 16 W output at 230 V
- Shaded-pole design runs at 550 RPM on 60/50 Hz supply
- Auto thermal protection guards against overheating in 40 °C ambient
- Cast-iron frame with rear/foot mount fits horizontal or vertical shaft-up installs
- CCWLE rotation and totally enclosed air-over enclosure suit HVAC control duties
Motor Purpose & Fit
This unit bearing motor powers HVAC air-handling equipment in residential and light commercial installations. It delivers 16 watts of output at 230 volts AC, making it suitable for small fan and blower assemblies that require continuous duty.
Upgrade Context
The motor replaces an existing shaded-pole unit bearing motor with the same 1/47 hp rating, 1,550 RPM nameplate speed and CCW lead-end rotation. The change is justified when the original motor shows thermal-protection tripping, bearing noise or insulation breakdown after extended service at up to 40 °C ambient temperature.
Installation Checklist
Verify that the supply voltage is 230 V AC at 50 or 60 Hz and that the mounting arrangement matches the rear-foot cast-iron frame in a horizontal or shaft-up vertical orientation. Confirm the driven load does not exceed the 1.0 service factor and that the 0.60 A full-load current is compatible with the circuit protection.
Highlights
- 1/47 hp motor delivers 16 W output at 230 V
- Shaded-pole design runs at 550 RPM on 60/50 Hz supply
- Auto thermal protection guards against overheating in 40 °C ambient
- Cast-iron frame with rear/foot mount fits horizontal or vertical shaft-up installs
- CCWLE rotation and totally enclosed air-over enclosure suit HVAC control duties
Specifications
| Brand | DAYTON |
|---|---|
| Color | Transparent |
Questions about this item
What rear/foot mounting pattern and shaft orientation does the 1/47 hp motor require?
The unit bearing motor uses a rear/foot mount with a cast iron frame and can be installed with the shaft horizontal or vertical shaft up.
How do you wire the 230 V AC shaded-pole motor correctly, and what common error trips the auto thermal protection?
Connect the single-phase supply to the two leads for 230 V AC at 60/50 Hz; reversing the leads does not change rotation on a shaded-pole design, but running above the 0.60 A full-load amp rating will trigger the automatic thermal cut-out.
When should the 16 W bearing motor be replaced based on its insulation class and ambient limit?
Plan replacement if the motor consistently operates above the 40 °C maximum ambient temperature, as Class A insulation will degrade faster under sustained overheating.
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