Motors for Electric Cars QS273 V3 Hub Motor is a cutting – edge solution tailored for electric cars, promising to redefine the standards of power, efficiency, and adaptability in the world of electric mobility.
Advanced Motor Design
Engineered with precision, the QS273 V3 features a single – axle design without an integrated moped rim, providing flexibility and ease of integration into various electric car models. This design allows for seamless compatibility with a wide range of wheel rim sizes, starting from 14 inches and above. With a center bore (CB) of ≥60mm and a pitch circle diameter (PCD) of ≤110mm (the default settings being PCD 4*100mm and CB60mm), it can be effortlessly installed to meet different vehicle requirements.

Magnetic and Stator Configuration
Boasting 16 pole pairs and a magnet height of 40mm, the QS273 V3 ensures a powerful magnetic field for efficient energy conversion. The aluminum core stator not only reduces the motor’s weight but also enhances heat dissipation, contributing to its long – term durability and stable performance. This combination enables the motor to operate at peak efficiency, even under demanding conditions.
Power and Speed
With a rated power of 3000W, Motors for Electric Cars QS273 V3 delivers robust performance, capable of achieving speeds ranging from 24KPH to 90KPH. The speed can be customized according to specific needs, and it is generally designed to operate at 72V and 70KPH, providing a perfect balance between power and efficiency. The wide work voltage range of 48V – 144V (with 72V as the default) offers flexibility in battery selection and vehicle configuration, ensuring optimal operation across different setups.
Torque and Efficiency
The motor generates an impressive maximum torque of approximately 225.0N.m, enabling smooth acceleration and excellent performance on various terrains. It also offers multiple KV values (8.1/11.04/12.1/13.3/15.2/17.3) for users to choose from, allowing for further customization based on specific speed – torque requirements. With a maximum efficiency of around 84%, the QS273 V3 minimizes energy loss, maximizing the driving range of electric cars.
Thermal Management
Equipped with a KTY83 – 122 thermic probe as the default option (with other options available), the motor effectively monitors and controls its temperature. It can operate within a working temperature range of 70 – 120℃, with a peak tolerance of 150℃. This advanced thermal management system prevents overheating, ensuring the motor’s reliability and extending its lifespan.
Safety Features
The QS273 V3 comes with a disc brake as the default brake type, featuring a PCD of 3*80MM and M8 bolts for secure attachment. Dual halls with waterproof connectors are included, with one for regular use and one as a spare, enhancing the motor’s control precision and protection against moisture. The 12mm axle flats and 10mm² cross – section phase wire (excluding the insulation layer) ensure stable power transmission, while the IP54 waterproof grade provides protection against dust and water splashes, making it suitable for various driving environments.
Versatile and Customizable
Available in a sleek black color as the default option, the Motors for Electric Cars QS273 V3 Hub Motor not only performs exceptionally well but also looks great. Its customizable features, from speed and KV value to thermal probe options, make it an ideal choice for electric car manufacturers and enthusiasts looking to create high – performance, tailored electric vehicles.