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Dayton 21017 replacement motor 115V 100 RPM 48YZ frame

Dayton

Dayton 21017 OEM Replacement Motor 1/3 hp 115V 2.8A 100 RPM 48YZ Frame

SKU CH-6842-C16F6

A 1/3 hp capacitor-start motor delivers 100 RPM at 115 V and 2.8 A in a 48YZ frame for Airmaster fan replacements

  • Product typeClosed Base
  • OEM replacement for Airmaster fans ensures correct fit
  • 1/3 hp capacitor-start motor delivers reliable single-phase power
  • Three-speed operation at 100 RPM nameplate speed provides airflow control
  • 115 V AC at 2.8 A full-load current matches standard household supply
  • 48YZ frame size simplifies direct mounting in compatible units

Dayton 21017 OEM Replacement Motor

The Dayton 21017 is a new single-phase OEM replacement motor rated at 1/3 hp with a 48YZ frame. It runs on 115V AC at 2.8 A full-load current and delivers 100 RPM nameplate speed with three-speed operation. This capacitor-start design suits maintenance technicians restoring compatible Airmaster fan equipment.

Capacitor-start design fits existing mounts

The closed-base 48YZ frame aligns with the original mounting pattern so no bracket modification is required. Single-phase 115V wiring connects directly to the existing supply, freeing the installer from phase-converter or transformer work. Three-speed capability preserves the original airflow settings without additional control hardware.

Low-speed operation limits heat and noise

At 100 RPM the motor runs quietly and generates minimal heat during normal fan duty. The 2.8 A draw at 115V keeps circuit loading modest on standard residential or light-commercial circuits. Capacitor-start construction provides reliable starting torque without the continuous current penalty of shaded-pole alternatives.

How it compares

Measured against everything we stock in Fan Motors, Parts & Clip-On Fans, at today’s prices. Recalculated every night.

Price $386.99
Pricier than about 90% of the 473 comparable items (median $38.99).

Specifications

Product
Brand nameDAYTON
Product typeClosed Base

Questions about this item

How long can the 1/3 hp capacitor-start motor run continuously before thermal protection trips?

The motor is rated for continuous duty at 100 RPM and 2.8 A on 115 V AC; thermal overload will engage only if ambient temperature or load exceeds design limits.

What is the typical sound level and surface temperature of the 48YZ frame motor after eight hours at full load?

The closed-base design keeps noise to a low hum and the housing warm to the touch, well within normal operating range for a 1/3 hp single-phase unit.

Which mounting bolts and capacitor does the 21017 motor need that are not included in the box?

You must supply four 48-frame mounting bolts and a compatible start capacitor matched to the 1/3 hp 115 V rating.

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