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Dayton 1/4 HP split-phase motor, open dripproof steel frame, 5/8 inch shaft

Dayton

Dayton 6XH85 Split-Phase Motor 1/4 HP 1140 rpm

SKU CH-3D58-P3A8B

Split-phase belt-drive motor delivers 1/4 HP at 1140 rpm and 1/10 HP at 850 rpm on 115 V AC for HVAC applications

  • 1/4 HP split-phase motor delivers continuous-duty power for belt-drive HVAC equipment
  • Dual-speed operation at 1140 and 850 RPM matches variable airflow requirements
  • 115 V AC supply with 4.6 A high-speed draw fits standard residential circuits
  • Open dripproof enclosure and Class B insulation rated to 104 °F ambient
  • 56CZ face-mount frame with 5/8 in shaft enables direct replacement in 56-frame applications

Belt-drive split-phase motor for HVAC systems

This Dayton 6XH85 motor provides two-speed operation at 1140 rpm and 850 rpm for belt-driven HVAC equipment. It runs on 115 V AC single-phase power and fits a 56CZ frame with face mounting. The open dripproof enclosure suits indoor installations where direct water exposure is not expected.

Replaces single-speed or worn split-phase units

Upgrading from a single-speed motor adds the 850 rpm low-speed option for quieter airflow or reduced energy draw when full output is not needed. The 1.35 service factor gives a margin for occasional overloads, and the 5/8 inch shaft matches common pulley bores. Continuous duty rating supports round-the-clock operation without thermal shutdown.

Limits of split-phase design and open enclosure

Split-phase starting torque is lower than capacitor-start types, so the motor is not suited for hard-to-start loads such as compressors. The open dripproof housing allows dust and moisture ingress, limiting use in dirty or outdoor environments. Class B insulation caps the maximum ambient temperature at 104 degrees F, so confined spaces with poor ventilation may exceed this limit.

Highlights

  • 1/4 HP split-phase motor delivers continuous-duty power for belt-drive HVAC equipment
  • Dual-speed operation at 1140 and 850 RPM matches variable airflow requirements
  • 115 V AC supply with 4.6 A high-speed draw fits standard residential circuits
  • Open dripproof enclosure and Class B insulation rated to 104 °F ambient
  • 56CZ face-mount frame with 5/8 in shaft enables direct replacement in 56-frame applications

Specifications

BrandDAYTON

Questions about this item

Will the 5/8 in. shaft and 56CZ face mount fit my existing belt-drive housing?

The motor uses a 56CZ frame with a face-mount pattern and a 5/8 in. diameter shaft, so match those dimensions on your driven equipment before ordering.

How do I wire the two-speed 115 V split-phase windings without tripping the overload?

Connect the common lead to neutral, then switch the hot leg between the low-speed (3.7 A) and high-speed (4.6 A) taps; the motor has no internal thermal protection, so an external overload sized to the highest current is required.

What ongoing upkeep does the open dripproof design with Class B insulation need?

Periodically vacuum dust from the open vents and verify the bearings run quiet; the continuous-duty, 1.35 service-factor motor has no user-replaceable brushes, so bearing noise is the main wear indicator.

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