An electric truck built on an e-axle platform places the traction motor, reduction gearbox and inverter directly inside the drive axle housing, removing the long mechanical link between a separately mounted motor and the road wheels. Dongfeng EV trucks use LvKong motors rated between 282 kW and 510 kW across the range, and on e-axle models that power is delivered straight to the wheel ends with fewer rotating parts to maintain or fail. The packaging win is real: by deleting the driveshaft tunnel, the chassis gains room for a larger battery, which is why the heaviest dumps and tractors in the line run e-axles rather than frame-mounted motors. For a fleet planner this means more usable kWh per meter of wheelbase and a lower center of gravity that helps stability when the dump body lifts or the tractor pulls a heavy combination through a corner at speed. The e-axle also moves mass lower and inward, trimming unsprung weight at the wheels and giving the suspension an easier job on rough quarry roads where a central motor would add frame weight high and forward.
The alternative keeps a central motor on the chassis frame and sends torque to the axle through a driveshaft and a final-drive gear, exactly like a diesel driveline minus the combustion engine. This is the format most overseas fleets already service, and it lets a workshop strip the motor without touching the axle or its electronics. For operations that already stock central-motor spares and train technicians on conventional drivelines, the familiarity is a real advantage that reduces risk during the first year of electrification. The trade-off is the parasitic loss through the shaft and the frame space the motor occupies that an e-axle reclaims for cells. Crucially, a central motor failure rarely strands the whole axle, so a mixed fleet can keep one service playbook and one spare motor type across diesel and electric units, which simplifies training and shrinks the parts cage. Many carriers also like that a frame motor is reachable without lifting the truck onto a pit, a real concern at small regional depots where the only lift is a portable jack and a long afternoon.
Because an e-axle removes the driveshaft and a separate gearbox, it recovers roughly 3 to 5 percent of energy that would otherwise be lost to mechanical friction and parasitic drag. On a 350 kWh pack that is the difference between about 335 km and 350 km of loaded range in the same duty cycle, or about 10-17 kWh saved per 200 km shift. The table below compares the two layouts on the numbers fleet buyers quote when they build a business case, and the gap widens in stop-start yard work where the e-axle spends less energy on each launch from standstill. Over a 300-day year that 10-17 kWh per shift becomes 3,000-5,100 kWh, worth $450-770 at $0.15/kWh before any maintenance saving is counted, and the figure scales linearly with fleet size and shift count. On a 20-truck quarry fleet the annual energy recovery alone can approach $10,000-15,000, a line item that quietly pays for the small e-axle premium within the first contract term without a single extra load moved.
| Drivetrain factor | E-axle | Central motor + driveshaft |
|---|---|---|
| Mechanical energy loss | Lower, about 3-5% gain | Baseline |
| Part count in driveline | Fewer | More |
| Packaging space | Tighter, more battery room | Motor occupies frame space |
| Service access | Axle must be opened | Motor removed on frame |
| Motor power range | 282-510 kW (LvKong) | 282-510 kW (LvKong) |
| Best duty | Yard, quarry, regional | Long highway, mixed fleet |
Both layouts use the same LvKong motor family, so peak torque feels similar from the driver seat and both clear a 10 percent ramp with a 35 t payload. The e-axle wins on response because there is no driveshaft wind-up: torque reaches the wheels a fraction sooner, which matters on a quarry climb where the truck launches loaded from standstill. The central motor wins where a fleet already runs a mixed diesel and electric yard and wants one service routine, because technicians can swap a frame motor without axle-specific tooling or a specialist bay. In practice the e-axle's edge shows up as half a truck length less rollback on a grade and a smoother pull away with a full payload, gains that compound across hundreds of launches in a single shift at a busy loading face. For a dump that climbs the same ramp forty times a day, that smoother launch also means less strain on the brake and the tires, trimming two of the oldest maintenance costs in the book.
A central motor can be unbolted on the frame in a standard workshop, while an e-axle fault may mean pulling the whole axle assembly to a specialist bay. For fleets in remote sites, that difference drives uptime more than the part-count saving does. On the other hand, the e-axle has fewer wearing parts, so over 8 years the service ticket count is typically lower and the 8-year / 4,500-cycle battery and driveline warranty covers most early risk. We recommend buyers weigh the following before specifying a platform for their operation, because the right answer changes with the distance from your nearest authorized service point and the skill of the people who will open the hood:
E-axle trucks carry a small upfront premium of roughly 4 to 8 percent versus a like-for-like central-motor build, but the energy saving and lower part count usually pay that back inside 18 to 30 months on high-utilization loops. For a 350 kWh dump doing 200 km per day, the 3-5 percent efficiency gain is about 10-17 kWh saved daily, or roughly $1.50-2.50 per day at $0.15/kWh, which scales to $11,000-18,000 across a 20-truck fleet over three years before counting the lower maintenance. The central motor closes the gap only when utilization is low and the energy edge is small, so the break-even line sits near 120-150 km per day of real work. Below that, the simpler central layout is the cheaper total cost; above it, the e-axle pulls ahead and keeps pulling as kilometer climb and fuel prices rise against a fixed diesel benchmark.
Consider a fleet running 15 dumps on 180 km per shift, 280 shifts per year. Spec the e-axle at a 6 percent premium over a $100,000 central-motor base, or $6,000 more per truck and $90,000 fleet-wide. The 4 percent average energy gain saves about 13 kWh per shift, or 3,640 kWh per year, worth $546 per truck at $0.15/kWh and $8,190 fleet-wide, plus lower brake and driveline service of perhaps $400 per truck per year. The combined $946 per truck per year recovers the $6,000 premium in about 6.3 years, and the lower part count stretches the working life, so on a 10-year hold the e-axle wins clearly. This is why high-cycle quarry and port operators default to the e-axle despite the higher ticket, while occasional users stay with the central motor and its simpler service path that any roadside shop can handle.
If your routes are fixed, short and high-cycle, the e-axle is the stronger pick and the TZ5E e-axle electric dump truck is a proven 424 kWh example with a 510 kW motor option for steep sites. If you run long highway legs or a mixed workshop, the central motor keeps life simple and cuts specialist dependency. Either way, the African electric truck market is moving toward e-axles for mining and quarry duty where uptime and packaging matter most, while carriers on open road still favor the serviceable central layout for its familiarity. Match the drivetrain to daily kilometer, not to the headline efficiency number, and the payback will land inside the warranty rather than outside it where the savings no longer count.
Bottom line for specifiers: choose the e-axle for efficiency and packaging on fixed loops, choose the central motor for service simplicity on mixed or long routes, and let daily kilometer count decide the payback window rather than the brochure headline that a sales desk wants you to read first.
Ready to electrify your fleet? Contact Shaanxi Fenghan Trading — authorized Dongfeng EV truck exporter. WhatsApp: +86 153 1943 1311 | Email: sales@fenghan-trade.com | dongfengevtrucks.com
🌐 Our Network: Fenghan Trade (SAGMOTO/SHACMAN Truck Export) · SAGMOTO heavy duty diesel trucks