E-Axle System Solutions
An e-axle packs the traction motor, reduction gearing and differential into one housing that bolts straight onto the vehicle frame. You specify it as a torque-and-ratio unit, which means the mounting interface, cooling path and half-shaft spline are all fixed early in the vehicle design. SES holds the range as an authorised JK Fenner distributor, covering configuration Coaxial or offset motor with integrated reduction; reduction Helical, single or two stage; differential Integrated bevel-gear open differential; cooling Air-cooled or liquid-jacketed housing. Executions include coaxial e-axle, offset parallel-shaft e-axle, single-stage reduction e-axle, two-stage reduction e-axle, among others. It is specified most often into electric three-wheeler cargo and passenger platforms and last-mile delivery light commercial vehicles. Every part is genuine JK Fenner through official channels, with designation, specification and options confirmed against your duty before it ships — supplied from Kolkata and our branch network, with breakdown cover that does not sit in an inbox.
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Function
Motor, reduction gear and differential in one housing
Vehicle class
Two-wheeler, three-wheeler and light commercial EV
Cooling
Air jacket or liquid, per continuous rating
Interface
Single mounting pattern, one wiring and coolant entry
Where it runs.
You will find E-Axle System Solutions in the parts of a plant where this particular duty actually occurs. In practice that means electric three-wheeler cargo and passenger platforms, last-mile delivery light commercial vehicles, high-speed electric two-wheeler drivetrains, and equally campus and industrial utility vehicles, airport ground-support tugs and tow tractors, low-speed electric agricultural tractors. What links them is the duty rather than the machine name — function: Motor, reduction gear and differential in one housing. If your installation is not on that list it matters less than you would think: the operating condition decides the specification. Send us the load, the speed, the running temperature and the environment it runs in, and we will match it to the right execution in the JK Fenner range and confirm what is in stock.
Specify it against the duty.
Specification here follows the operating condition, not the catalogue. Duty cycle is stop-start city delivery rather than steady highway running — Size on continuous torque at low road speed, not on the peak figure. A unit chosen on peak numbers hits its thermal limit halfway through the shift and derates. Gradeability on loaded ramps and flyovers matters — Set the reduction ratio against the worst gradient at full payload. Too tall a ratio drags motor current up and cooks the winding insulation. Vehicle sees standing water and monsoon wading — A sealed output shaft arrangement with the breather positioned above the wading line. A breather below that line draws water into the gear oil in one season. Where two of those apply at once, specify for the harsher of the two — under-specifying is what puts the part back on the bench a month later. Send us the duty and we will confirm the execution.
Ordering this from SES.
Ask for the torque-speed curve and the continuous rating, not just the headline kW. Two e-axles quoted at the same peak power can differ by a factor in how long they hold torque before thermal derate begins.