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Dayton 2 hp capacitor-start run motor open drip proof rigid base

Dayton

Dayton 31TR70 Capacitor-Start/Run Machinery Motor 2 hp 115/208-230V

SKU CH-8SKY-9FYJD

Delivers 2 hp at 1,725 RPM on 115/208-230 V single-phase power for continuous-duty machinery

  • weight50.8
  • typeClosed Base
  • 2 hp output drives demanding machinery tasks
  • Capacitor-start/run design provides strong starting torque
  • Dual-voltage 115/208-230V fits multiple power supplies
  • 1,725 RPM nameplate speed suits general-purpose applications
  • Continuous duty cycle with 1.15 service factor handles sustained loads

Motor type and voltage range

The Dayton 31TR70 is a capacitor-start/run general-purpose motor rated at 2 hp. It operates on single-phase power at 115V or 208-230V AC with a nameplate speed of 1,725 RPM and a 56H frame.

Suitability and limitations

This motor suits equipment requiring continuous-duty operation at 60 Hz in ambient temperatures up to 40°C. Its open drip-proof enclosure and lack of thermal protection make it unsuitable for wet, dusty or hazardous locations where a totally enclosed or thermally protected unit is required.

Deciding specification

The dual-voltage design delivers 17.6 A at 115V and 9.5-8.8 A at 208-230V, so the available supply voltage and circuit ampacity determine whether this motor can be installed without electrical modifications.

Highlights

  • 2 hp output drives demanding machinery tasks
  • Capacitor-start/run design provides strong starting torque
  • Dual-voltage 115/208-230V fits multiple power supplies
  • 1,725 RPM nameplate speed suits general-purpose applications
  • Continuous duty cycle with 1.15 service factor handles sustained loads

Specifications

BrandDAYTON
weight50.8
typeClosed Base

Questions about this item

What does the 2 hp rating mean when the motor is installed in a machine?

The motor delivers a continuous mechanical output of 2 horsepower at its nameplate speed of 1,725 RPM with a 1.15 service factor for occasional overload.

How does the 115/208-230 V dual-voltage design affect the current draw in practice?

At 115 V the full-load current is 17.6 A; at 208-230 V it drops to 9.5-8.8 A, so the supply circuit must be sized for the voltage you actually use.

What does the 56H frame tell me about mounting this motor?

The 56H frame specifies standard NEMA shaft height and bolt-hole spacing for a rigid base, allowing direct replacement of any 56H-footprint motor.

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