Rear Axle With Electric Motor

Our rear axle with electric motor is a purpose-built solution designed for 8–9 meter city buses that require dependable performance, efficient power delivery, and safe operation in busy urban environments. Built on permanent magnet synchronous motor (PMSM) technology, this axle integrates advanced drivetrain engineering with robust structural design to support a wide range of operating conditions. By combining electric propulsion directly within the axle system, operators benefit from reduced complexity, improved energy efficiency, and greater vehicle stability on demanding routes.

This rear axle with electric motor has been engineered with several features that directly address the needs of fleet operators. The dual-motor configuration provides a peak power output of 2 × 120 kW and a rated power of 2 × 60 kW, delivering steady propulsion while maintaining high efficiency. A maximum motor speed of 9,500 r/min ensures rapid response in traffic situations, while system torque of 14,040 N·m enables strong traction under full passenger load.

Other features include an IP68 protection grade for durability against dust and water, a gear ratio of 17.55 optimized for city driving, and a maximum wheel speed of 540 r/min. Air disc brakes enhance safety, and the dual-tire layout ensures stability even on challenging road surfaces. These features collectively make the rear axle with electric motor a reliable foundation for urban public transport.

The advantages of adopting this rear axle with electric motor go beyond raw specifications. Its low-floor and wide-channel design, with an interior width of up to 755 mm, provides safer and more convenient passenger movement, improving accessibility for commuters. At the same time, the electronic differential system (EDS) ensures smooth cornering and reduces tire wear, with an expected tire-change mileage exceeding 100,000 kilometers.

For fleet operators, these advantages translate into lower maintenance costs, enhanced passenger comfort, and dependable long-term performance. By integrating propulsion directly into the axle, the vehicle weight distribution is optimized, reducing stress on other components and improving overall stability.

This rear axle with electric motor is primarily designed for 8–9 meter city buses operating on short to medium-length routes. In urban environments where frequent stops, heavy passenger turnover, and safety are critical, this axle helps buses maintain consistent acceleration, safe braking, and reliable operation. Its suitability for low-floor bus layouts makes it especially valuable for transit systems aiming to meet modern accessibility standards.

In practice, city bus fleets equipped with the rear axle with electric motor can benefit from improved scheduling reliability, smoother rides for passengers, and greater operational efficiency under varied traffic conditions.

 

Urban Commuter Buses

8–9 meter city buses where comfort and safety are priorities.

Medium-duty commercial EVs requiring durability in stop-and-go traffic.

Behind the design of this rear axle with electric motor lies a strong focus on technical research and development. The use of PMSM technology reflects years of engineering refinement, providing high efficiency at different load levels and longer service life compared to traditional induction motors. Advanced modeling techniques were used to ensure the dual-motor system operates with minimal vibration and reduced noise, meeting the requirements of urban passenger comfort.

The integrated electronic differential system has been validated through extensive road testing, ensuring the axle meets international standards for durability and safety. Continuous R&D investment ensures the product evolves with new energy efficiency regulations and customer requirements.

Production of our rear axle with electric motor follows strict quality protocols, supported by modern facilities that combine automated assembly with precise inspection. Each axle undergoes rigorous performance validation, including torque output testing, thermal stability evaluation, and water ingress protection verification. Components such as gears, bearings, and braking systems are sourced from trusted suppliers to guarantee long service intervals.

Q1: What vehicles are suitable for the rear axle with electric motor?
A1: It is optimized for 8–9 meter city buses, particularly low-floor and wide-channel models.

Q2: How does this product compare with a conventional electric drive axle?
A2: Unlike central-drive systems, the rear axle with electric motor integrates propulsion within the axle housing, improving weight distribution and reducing mechanical complexity.

Q3: What maintenance is required for the rear axle with electric motor?
A3: Routine checks focus on brakes, tires, and lubrication points. The electronic differential system reduces tire wear, extending maintenance intervals.

Q4: Can this axle be used in electric trailer or electric truck conversions?
A4: While designed for city buses, similar rear axle with electric motor configurations can be adapted for light commercial vehicles with matching requirements.

Q5: What protection measures are included?
A5: The IP68 protection grade ensures resistance against dust and water, enabling safe operation in varied climates.

Q6: What is the expected service life of the motors?
A6: With proper maintenance, the motors are designed for long-term operation, with field data showing reliability over extensive urban driving cycles.

Q7: How does the electronic differential system improve performance?
A7: The EDS ensures balanced torque distribution across wheels, enhancing stability during cornering and reducing tire wear.

Q8: How efficient is this rear axle with electric motor compared to other electric axles?
A8: Thanks to its dual-motor PMSM design and optimized gear ratio, it delivers high efficiency across common bus duty cycles, reducing overall energy consumption.