Mid drive electric motor — the high-performance QSD138A-100 6000W PMSM. Tailored for electric scooters and electric motorcycles, this cutting-edge motor redefines efficiency, power, and reliability.

Mid Drive Electric Motor D138A-100 6000W
Mid Drive Electric Motor D138A-100 6000W

At the core of the D138A-100 mid drive electric motor lies impressive technical specifications that deliver exceptional performance.

Boasting a rated power of 6KW and a peak power of 20KW, it operates on a 72V rated voltage, reaching a rated speed of 6000RPM and an exhilarating peak speed of 8000RPM.

With a peak torque of 83N.m and a recommended maximum current of 350A/1200A, this motor ensures robust acceleration and effortless climbing capabilities, making it ideal for both urban commutes and challenging terrains.

The adoption of a PMSM inner rotor design with 5 pole pairs and a 100mm magnet height enhances flux weakening performance, enabling high efficiency even during demanding operations — with a maximum efficiency of over 90%.

Designed with practicality and durability in mind, the mid drive electric motor features an air cooling system that effectively regulates temperature, supporting a maximum operating temperature of 50℃ and a maximum working temperature of 150℃.

Its IP67 waterproof grade ensures reliable performance in various weather conditions, while the integrated single Hall sensor set with a waterproof connector guarantees precise rotor position detection for smooth speed control.

Weighing just 14.2kg (net weight), the motor offers a lightweight and space-saving alternative to traditional hub motors, without compromising on power.

Each unit of the D138A-100 mid drive electric motor comes as a complete set, including one 72V 6000W mid drive motor and one 428 14T sprocket, providing seamless compatibility and easy installation.

To optimize performance, QS Motor recommends pairing the motor with the ND721200 Fardriver Controller (Hall Version), ensuring perfect synergy between the motor and controller for enhanced overall efficiency.

In line with QS Motor’s commitment to quality, the D138A-100 mid drive electric motor has undergone rigorous testing, as evidenced by its comprehensive test report. The motor delivers consistent performance across different load points, maintaining high efficiency and stable output power, which underscores its reliability for long-term use.

motor test report
motor test report

This mid drive electric motor combines advanced technology, rugged design, and user-centric features. Whether for personal transportation or commercial applications, this mid drive motor is set to empower electric vehicles with superior performance and reliability.

To learn more about the QSD138A-100 6000W PMSM mid drive electric motor or to place an order, contact the sales team(info@cnqsmotor.com) for customized inquiries.

QS MOTORAuthor posts

QS MOTOR

Taizhou Quanshun Electric Drive Technology Co., Ltd. (used name Taizhou Quanshun Motor Co., Ltd., brand name QSMOTOR or QS Motor, 全順電機), is the leading electric motor manufacturer for high power & high quality Electric Bike Electric Scooter Electric Motorcycle Small Electric Car Electric Special Vehicle, which include electric wheel hub motor (from 500W to 20KW, 48V-120V, 30km/h-160km/h), and IPM electric mid drive motor (from 1000W to 12000W) in China with more than 20 years.