YQ138-8AG Three-phase Asynchronous 8 Pole Electric Motor 280kw 380V 735rpm

AIMIN ELECTRICS CO., LTD. is one of the leading manufacturers and suppliers of yq138-8ag three-phase asynchronous 8 pole electric motor 280kw 380v 735rpm in China. With abundant experience, we are committed to providing high quality customized products with competitive price. We warmly welcome you to buy bulk premium products made in China here and get quotation from our factory.

Brief Introduction

Developed and manufactured by XI'AN AIMIN MOTOR CO.,LTD, the 280 kw 8 pole electric motor YQ138-8AG is a heavy-duty low-speed three-phase asynchronous drive engineered to satisfy extreme industrial operating conditions, standing apart from standard general-purpose motors with its high-altitude adaptive design, reinforced bearing configuration and stable low-speed torque output. Certified with CE marking and produced in strict compliance with GB/T 755 international motor performance standards, this unit is purpose-built for mining, metallurgy, heavy conveying and highland industrial scenarios where conventional drives struggle to sustain consistent performance.

This 280 kw 8 pole electric motor operates steadily under 50Hz, 380V three-phase power supply, delivering a rated rotational speed of 735 r/min, a high power factor of 0.865 and a premium operational efficiency reaching 92%. Its optimized electromagnetic circuit structure precisely balances copper winding layout and silicon steel core stacking, minimizing torque loss and energy waste during long-hour S1 continuous duty cycles. Unlike common high-speed motors that suffer from insufficient low-speed pulling force, the YQ series adopts customized stator and rotor slot design to maintain stable torque at full load, eliminating stall risks when driving heavy loads such as large crushers and raw material conveyors. For factories located in plateau regions, its optimized electromagnetic loss control effectively offsets power attenuation caused by thin air, cutting long-term operational energy expenditure significantly.

The mechanical and environmental adaptability of the motor is its core competitive advantage. It supports stable operation at altitudes up to 3800 meters, with a wide ambient temperature range of -15℃ to 40℃, perfectly fitting plateau mines and open-air metallurgical workshops with drastic temperature fluctuations. Adopting classic IM B3 horizontal foot mounting and IC01 natural air cooling structure, the unit simplifies auxiliary heat dissipation configuration for users, while Class 155 high-temperature resistant insulation material prevents winding aging under sustained heavy load heating. The whole machine carries IP20 protection grade, which effectively blocks large particulate debris from entering the internal winding chamber to avoid short-circuit faults.

To cope with frequent heavy shock loads in mining industries, the drive end of this 280 kw motor is fitted with NU322ECM cylindrical roller bearing, paired with 6322/C3 deep groove ball bearing at the non-drive end. This mixed bearing scheme boasts far stronger radial and axial load capacity than single ball bearing designs, resisting impact vibration generated by crushers and ball mills, and drastically extending overhaul intervals. The overall weight of 1910kg solid cast iron base comes with integrated vibration damping structures to suppress resonance noise, and the delta internal wiring matches mainstream industrial power distribution systems with a rated operating current of 534.6A for easy on-site wiring and commissioning.

Every YQ138 8 pole electric motor undergoes a complete set of strict factory tests before delivery, covering winding insulation resistance, no-load loss, full-load temperature rise, vibration and torque verification. Produced in December 2025, each unit carries an exclusive production serial number to realize full lifecycle quality traceability, enabling quick after-sales tracking and technical support for overseas clients.

Widely applicable to heavy industrial equipment including ore crushers, raw material belt conveyors, metallurgical rotary kiln auxiliary drives and large industrial mixers, the YQ138-8AG 280 kw motor provides a reliable, energy-efficient and maintenance-friendly driving solution. Whether for new plateau factory construction or upgrading outdated low-torque motors in heavy processing lines, it integrates high-altitude adaptability, heavy-load resistance and stable energy-saving performance, becoming a preferred heavy-duty drive product for global mining and metallurgical industrial purchasers.

Main Technical Parameters

Production Details

Frame

• Compact and robust iron casting frame

• Universal IEC installation dimensions available

• Customizable outlook and dimensions

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Stator

• 99.9% pure copper winding for stator to ensure the output power and efficiency

• Excellent insulation system with 5 more processing flows

• All the windings are fitted in by handwork to ensure all slots are full and avoid any winding flaw.

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Rotor

• Aluminum casting rotor with high quality silicon steel rotor core to assure induction efficiency

• Well and precisely machined shafts with good capacity of strength and toughness

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Testing

• All motors must pass the piece testing before painting and packaging

• Type tests will be regularly performed for each series, more often for new developed series and variants.

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Applications

Cement

Power station

Steel

Sugar

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