China Suppliers Factory 3.5T Rear E-Axle for Minivans and Light Commercial Trucks
Pumbaa E-Axle Product Introduction
1. PUMBAA Rear E-Axle for Light Commercial Vehicles integrates "motor, propeller shaft, and drive axle" into a single unit, suitable for new energy logistics light trucks and special-purpose vehicles with a Gross Vehicle Weight (GVW) ranging from 4.5t to 7.5t.
2. Optional rear axle configurations:
- Brake type: Hydraulic brake drum brakes, pneumatic brake drum brakes ("S"-cam, wedge-type), or pneumatic brake disc brakes.
- Reducer type: 1-speed reduction or 2-speed reduction.
- Wheel end structure: Maintenance-free hub units.
3. Key features of the electric drive rear axle product:
The rear axle assembly features a compact structure, small footprint, and low weight. It effectively frees up chassis space, facilitating overall vehicle chassis layout.
The rear axle housing is integrally stamped and welded from high-strength steel plates, delivering strong load-bearing performance and excellent reliability.
The highly integrated transmission system (motor directly drives the rear axle, eliminating the propeller shaft) boosts transmission efficiency, reduces power loss, and achieves a comprehensive efficiency over 5% higher than traditional direct-drive systems.
With a system weight reduction of over 50kg, 100% torque reversal, and regenerative energy recovery, it significantly extends the vehicle’s range. Additionally, it minimizes friction between brake pads and drums, prolongs component service life, and lowers long-term usage costs.
PMQX2100100A-3.5/160 3.5T Rear E-Axle
Pumbaa E-Axle Product Parameters
3.5T Rear E-Axle Model: PMQX2100100A-3.5/160
Rear Axle Product Structural and Functional Diagram
| Rated Load (kg) | 3500 | Gear Ratio | 16.55 |
| Maximum Load (kg) | 6000 | Maximum Torque (N.m) | 5800 |
| Maximum Speed (Km/h) | ≥110 | Maximum Gradeability | 23% |
| Sustainable Speed (Km/h) | 80 | Axle Housing Structural Form | Stamping and Welding |
| Rim Mounting Surface Distance A (mm) | 1524±3 | Axle Housing Cross Section (mm) | 106×106×6 |
| Spring Distance B (mm) | 950±1 | Brake Specification | Hydraulic Brake 0310 * 75 (Drum Brake) |
| Wheel Bolt Circle C (mm) | ø190 | Brake Caliper Diameter | ø28.58 |
| Wheel Bolt | 6-M18×1.5 | Brake Hydraulic Line Connection | M12x1.25 |
| Rim Lip Diameter | ø139.8 | Single Brake Torque | 10Mpa, 3100N.m |
| Compatible Tires | 7.0×R16 | Hub Mounting Surface Distance | 1496-1612 |
| Wheel Alignment Method | Lip Positioning | Compatible Rims | 5.5J×16 |
| Optional Configuration | Maintenance-Free Hub Unit, Pneumatic Brake with S Cam Brake, Pneumatic Brake with Wedge Brake, Disc Brake | ||
| Motor Type | PMSM | Protection Rating | IP67 |
| Motor Peak Power (Kw) | 120 | Motor Rated Voltage (VDC)(V) | 540 |
| Motor Rated Power (Kw) | 60 | Voltage Operating Range (VDC)(V) | 350～750 |
| Motor Peak Torque (N.m) | 350 | Motor Maximum Speed (rpm) | 12000 |
| Motor Rated Torque (N.m) | 125 | Motor Rated Speed (rpm) | 4580 |
| Insulation Class | H | Duty | S9 |
| Curb Weight (kg) | 2900 |
| Full Load/Overloaded Gross Mass (kg) | 4500/6000 |
| Tire Model, Rolling Radius (mm) | 7.00R16LT、352 |
| Maximum Gradeability | 23% |
| Vehicle Maximum Parking Gradeability | 20% |
| Maximum Speed (km/h) | 110 |
| Economic Speed (km/h) | 60～80 |
| 0~50km/h Acceleration Time (S) | ≤15 |
| 30~0km/h Braking Distance (m) | ≤9 (Unladen)、≤10 (Full Load) |
Application for Pumbaa 3.5t Rear E-Axle Products: Electric Mini vans/Trucks
Why Choose an e-axle?
Amid the booming electric vehicle (EV) industry, e-axle are increasingly becoming a popular choice for automakers and consumers alike—backed by numerous significant advantages.
1. Markedly Enhanced Performance
Strong Power & Instant Response: The e-axle integrates the electric motor, reducer, and differential. As the power source, the electric motor efficiently converts electrical energy into mechanical energy. Compared to traditional ICE vehicle powertrains, the motor in an e-axle responds almost instantly with zero lag. During startup, it delivers powerful torque immediately, enabling rapid acceleration for a smooth, thrilling driving experience. For example, high-performance EVs with advanced e-axle can hit 0-100 km/h in just a few seconds—something traditional ICE vehicles struggle to match.
2. Precise Power Distribution
The differential is a key component of the e-axle. When turning, it allows left and right wheels to rotate at different speeds—ensuring stability and handling in all cornering scenarios, letting drivers control the vehicle’s trajectory with precision. In complex road conditions (e.g., mud, snow), the drive axle further optimizes traction by using electronic controls to distribute power more finely, enhancing the vehicle’s passability.
3. Efficient & Energy-Saving Advantages
Integrated Design Cuts Energy Loss: By combining critical components into a single module, the e-axle shortens the power transmission path. This reduces energy loss between parts—unlike traditional powertrains—allowing electrical energy to be converted into kinetic energy more efficiently. The result? Improved energy utilization, longer EV range, and reduced “range anxiety” for consumers.
Energy Recovery & Reuse: Advanced e-axle feature regenerative braking: when decelerating or braking, the motor acts as a generator, converting the vehicle’s kinetic energy back into stored electricity. This further boosts efficiency, lowers energy consumption, and makes EVs even more eco-friendly.
4. Space Utilization & Design Flexibility
Saves In-Car Space: The integrated design takes up far less room than traditional standalone components (engines, transmissions). This frees up more passenger and cargo space—highly appealing to consumers prioritizing comfort and practicality—and gives designers more freedom to optimize interior layouts.
Streamlines Vehicle Design: With a simpler structure, automakers enjoy greater flexibility in overall vehicle design. They can adjust parameters like ground clearance and wheelbase more freely, improve aerodynamics, and pursue lightweight construction more easily.
5. Lower Maintenance Costs & High Reliability
Reduced Maintenance: Fewer components and a simpler structure mean fewer breakdowns and less frequent servicing compared to ICE powertrains. There’s no need for regular oil changes, spark plug replacements, or other ICE-specific upkeep—cutting owner costs significantly.
Proven Durability: Advances in manufacturing and materials have made e-axle highly reliable. They withstand complex driving conditions and harsh environments, ensuring long-term stable performance for the vehicle.
With its superior performance, energy efficiency, space-saving design, and low maintenance costs, the e-axle has become the ideal choice for EV development—propelling the electric vehicle industry forward into a more sustainable future.
Frequently Asked Questions (FAQ)
The Pumbaa Rear E-Axle is designed for light commercial vehicles, specifically new energy logistics light trucks and special-purpose vehicles with a Gross Vehicle Weight (GVW) ranging from 4.5t to 7.5t.
You can choose between hydraulic brake drum brakes, pneumatic brake drum brakes (available in both "S"-cam and wedge-type configurations), or pneumatic brake disc brakes.
By integrating the motor, reducer, and differential directly into a single unit, it eliminates the traditional propeller shaft. This shorter transmission path reduces energy loss, resulting in a comprehensive system efficiency that is over 5% higher than traditional direct-drive systems.
The axle uses a Permanent Magnet Synchronous Motor (PMSM) with a peak power of 120 kW, peak torque of 350 N.m, maximum speed of 12,000 rpm, and a protection rating of IP67.
E-axles have a simpler structure with fewer moving parts than internal combustion engine (ICE) powertrains. They eliminate the need for routine maintenance tasks like oil changes, spark plug replacements, and belt adjustments, significantly reducing long-term upkeep expenses.
Yes, it features 100% torque reversal and support for regenerative braking, which acts as a generator during deceleration to convert kinetic energy back into stored electricity, extending the vehicle's range.