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Transparent unit bearing motor with rear double foot mounting

FASCO

FASCO UB588 Unit Bearing Motor HVAC Control

SKU CH-ST93-2PYBD

A shaded-pole unit bearing motor delivering 4 W at 115 V AC for continuous HVAC duty

  • ColorTransparent
  • Continuous duty rated for reliable HVAC operation
  • Single-speed 115 V AC shaded-pole motor delivers 4 W output
  • Impedance thermal protection safeguards against overheating
  • Rear double-foot mounting simplifies installation in tight spaces
  • Operates up to 40 °C ambient temperature

Product identity

The FASCO UB588 is a single-phase shaded-pole unit bearing motor rated at 1/250 HP and 4 W output. It runs on 115 V AC at 60 Hz, draws 0.29 A at full load, and turns at a nameplate speed of 1,450 RPM. The motor is designed for continuous duty in HVAC control applications where a compact, direct-drive fan or blower is required.

Included hardware

The motor ships with a rear double-foot mounting arrangement and a clockwise lead-end shaft rotation. Its totally enclosed air-over enclosure and Class B insulation are built into the unit, so no separate mounting kit or thermal protector needs to be sourced. The impedance-protected design eliminates the need for an external overload device.

Voltage and temperature limits

Operation is confirmed only at 115 V; the motor is not usable at 200 V or 208 V. Maximum ambient temperature is 40 °C, and the service factor is 1.0, leaving no headroom for sustained overload or higher supply voltages. Builders needing multi-voltage capability or a higher temperature rating must select a different motor.

Highlights

  • Continuous duty rated for reliable HVAC operation
  • Single-speed 115 V AC shaded-pole motor delivers 4 W output
  • Impedance thermal protection safeguards against overheating
  • Rear double-foot mounting simplifies installation in tight spaces
  • Operates up to 40 °C ambient temperature

Specifications

BrandFASCO
ColorTransparent

Questions about this item

Will the 1/250 HP shaded-pole motor need lubrication or bearing replacement over time?

The unit bearing design is sealed for life, so no routine lubrication is required; if the bearing eventually wears, the entire motor assembly is replaced rather than serviced.

What limits continuous operation at the rated 115 V and 450 RPM?

The motor is rated for continuous duty with impedance thermal protection and a maximum ambient temperature of 40 °C; exceeding that temperature will trip the protection first.

How much heat and noise does the 4 W motor produce when running all day?

At only 4 watts output and 0.29 A draw, heat rise is minimal and the totally enclosed air-over design keeps noise low during constant operation.

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