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Dayton 1 HP open drip-proof motor, rigid base, 56H frame

Dayton

Dayton 31TR75 1 HP 1725 RPM 56H Frame

SKU CH-NKK1-PAXH6

A 1 hp single-phase capacitor-start/run motor delivers 1725 RPM in a 56H frame with 82.6% efficiency

  • Product weight40.93
  • Product typeClosed Base
  • 1 HP motor delivers strong output for demanding fan applications
  • Capacitor-start/run design provides high starting torque and efficient running performance
  • Dual-voltage 115/208-230 V wiring suits residential and light-commercial power supplies
  • 6 % efficiency reduces energy consumption during continuous duty operation
  • Open drip-proof enclosure with rigid base allows all-angle mounting in dry environments

Dayton 1 HP Capacitor-Start Motor

The Dayton 31TR75 is a single-phase general-purpose motor rated at 1 HP and 1,725 RPM. It operates on 115/208-230 V AC at 60 Hz with a 56H frame and open drip-proof enclosure. Continuous duty cycle and Class B insulation suit steady industrial or commercial loads.

Buyers needing thermal overload protection

This motor has no built-in thermal protection, so installers must provide external overload devices to meet code. It is not for applications that require an internally protected motor or a different frame size. Voltage must match the 115/208-230 V supply exactly.

82.6 % nominal efficiency

The nameplate lists 82.6 % efficiency, which determines operating cost and heat rise in continuous service. Verify that this efficiency level meets your project specification before purchase.

How it compares

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

Price $595.99
Pricier than about 92% of the 473 comparable items (median $38.99).

Specifications

Product
Brand nameDAYTON
Product typeClosed Base

Questions about this item

Which motor frame size fits my application?

The 56H frame is a standard NEMA size used on many belt-drive fans and pumps; verify shaft height and bolt pattern against your existing mount before ordering.

What does the 1725 RPM nameplate speed mean once the motor is loaded?

At full load the motor runs at 1725 RPM on 60 Hz power; the 1.15 service factor allows brief overloads without tripping, but continuous operation stays at nameplate speed.

How does the 115/208-230 V dual-voltage design affect wiring?

The motor can be connected for 115 V (8.4 A full-load) or 208-230 V (4.6-4.2 A); re-arrange the leads per the nameplate diagram to match your supply voltage.

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