The 70Y Capacitor-Start AC Induction Motor: Commercial Power

The 70Y (70mm frame size) AC Induction Motor is a single-phase workhorse designed for medium-power commercial applications, often delivering continuous output from 100W to 300W.

Utilizing the Capacitor-Start configuration, this motor provides substantially higher starting torque than a split-phase or shaded-pole design. The larger frame accommodates heavier gauge windings, improving thermal capacity and allowing the motor to handle higher inertial loads upon startup. The design relies on a reliable centrifugal switch mechanism to disconnect the auxiliary start winding once operational speed is reached, ensuring smooth and efficient running on the main winding.

Introduction

Detailed Parameters and Performance Data

RETEK: High Reliability for Commercial Equipment

Suzhou Retek Electric Technology Co., Ltd. supplies the 70Y series to OEMs requiring a robust, fixed-speed AC motor for continuous duty. We prioritize the reliability of the centrifugal switch and capacitor selection, which are the two most critical components for the motor's longevity. This series is a cost-effective, durable solution for equipment that requires easy installation and low maintenance across global AC voltage standards (110V or 220V).

Applications

Advanced Technology Highlights

Mid-Range Applications for 70Y AC Induction Motors

  • Commercial Ventilation and Blowers: Motors for HVAC air handlers, industrial kitchen ventilation, and forced-air cooling systems. Challenge: High inertia and air resistance at startup.
  • Small Compressors and Vacuum Pumps: Driving reciprocating or rotary compressors requiring high starting torque under residual pressure.
  • Woodworking Machinery: Motors for benchtop sanding machines, small lathes, and light-duty saw blades.
  • Large Domestic Appliances: High-capacity washing machines or industrial floor cleaners.

Technical Specifications

Industrial & Commercial Usage

Technical Parameters (70Y AC Induction)

ParameterRange / Typical ValueUnit
Frame Size (NEMA)70YStandard
Starting Torque Ratio200-300% of Rated TorqueFactor
Output Power100 to 300W
Nominal Voltage110 / 220, Single-PhaseVAC
Insulation ClassB or FRating

Additional Information

Supplementary Details & Notes

Integrated Production and Customization Workflow

Production focuses on precise balancing of the squirrel-cage rotor and validation of the motor's full load current and temperature rise to ensure compliance with the target thermal class.

  • Enclosure Type: Customizing the motor enclosure (e.g., TEFC - Totally Enclosed Fan Cooled or ODP - Open Drip Proof) to suit the operating environment.
  • Winding and Pole Count: Tailoring the pole count (e.g., 2-pole for high speed, 4-pole for standard speed) to achieve the exact RPM required at the operating frequency.
  • Integrated Thermal Protection: Factory-integrating the correct thermal overload protection device (e.g., manual reset button or internal thermal switch) per client specifications.
  • Terminal Box: Providing customized terminal box configurations for easy and safe wiring termination in the field.

About Suzhou Retek Electric Technology Co., Ltd.

Unlike other motor suppliers, Retek engineering system prevents the selling of our motors and components by catalogue as every model is customized for our customers. The customers are assured that every component they receive from Retek is designed with their exact specifications in mind. Our total solutions are a combination of our innovation and a close working partnership with our customers and suppliers.

As China AC Induction Motor 70Y 70mm Capacitor start Manufacturers and Wholesale AC Induction Motor 70Y 70mm Capacitor start OEM/ODM Suppliers, Retek business consists of three platforms: Motors, Die-Casting and CNC manufacturing and wire harness. Retek products are widely supplied for residential fans, vents, boats, airplanes, medical facilities, laboratory facilities, trucks and other automotive machines.

Welcome to send us an RFQ, it is believed you will get the best cost-effective products and services here!
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