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Dayton 20RK85 condenser fan motor open enclosure rigid base 56YZ frame

Dayton

Dayton 20RK85 condenser fan motor 1 hp 56YZ frame 140 RPM 208-230/460V AC

SKU CH-MCPM-7BVQE

Three-phase condenser fan motor delivering 1 hp at 140 RPM with 56YZ frame and 208-230/460 V AC operation

  • 1 hp three-phase power drives demanding condenser fans
  • 140 RPM low-speed output suits direct-drive cooling applications
  • Dual 208-230/460 V AC input fits common industrial supplies
  • Inverter-rated design enables variable-speed control
  • Continuous duty with Class F insulation handles 70 °C ambients

Application

The Dayton 20RK85 is a three-phase condenser fan motor rated at 1 hp with a 56YZ frame. It suits HVAC technicians and maintenance engineers who need a direct replacement for air-over condenser installations running on 208-230/460V AC supply.

Voltage limits

The motor operates on three-phase power at 208-230/460V AC and 60 Hz, drawing 4.3-4.3/2.1 A at full load. It is inverter rated, yet the fixed 140 RPM nameplate speed and single-speed design prevent variable-speed control without an external drive.

Frame fit

The 56YZ frame and rigid base mounting determine whether this unit bolts into the existing bracket. Buyers with a different frame size or a resilient-mount housing cannot use this motor without mechanical modification.

How it compares

Measured against everything we stock in Industrial Motors & Machine Parts, at today’s prices. Recalculated every night.

Price $838.99
Pricier than about 91% of the 397 comparable items (median $91.99).

Specifications

Product
Brand nameDAYTON

Questions about this item

Should I choose the 208-230 V or the 460 V connection for my supply?

The motor is dual-voltage; wire it for 208-230 V AC to draw 4.3 A per phase, or for 460 V AC to draw 2.1 A per phase.

What does the 1 hp rating deliver at the shaft in daily use?

At 140 RPM the motor produces 1 hp continuously with a 1.0 service factor, so sustained output matches the nameplate without overload margin.

How does the 56YZ frame and rigid base limit mounting options?

The 56YZ frame fixes bolt pattern and shaft height, while the rigid base requires a flat, drilled surface — no resilient rings or C-face adapter included.

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