Transaxel

Transaxel is a compact integrated transaxle technology developed to combine a high‑torque electric motor, gearbox, and differential into a single lightweight unit. The design aims to reduce axial length, weight, and packaging complexity compared with conventional multi‑piece drivetrains, making it attractive for battery electric vehicles (BEVs), hybrid-electric vehicles and heavy‑duty machines. Transaxel’s core innovation is a modular assembly that allows modular scaling of torque and speed while maintaining a low center of gravity. The unit typically incorporates a pinion gear and a helical‑type differential, which can be electronically controlled for torque vectoring or regenerative braking.

The technology has been patented by the originating company and has been demonstrated in prototype platforms from multiple automobile manufacturers. It offers torque densities of up to 30 Nm/kg and can be fitted to longitudinal or transverse mounting configurations. In addition to automotive uses, Transaxel units are being evaluated for marine propulsion and industrial material handling due to their high reliability and low maintenance requirements.

Several automotive OEMs have expressed interest in using Transaxel units in upcoming low‑center‑of‑gravity BEV platforms. Development is ongoing to improve gear tooth life and to reduce the overall cost by leveraging mass production techniques. The technology is expected to play a role in the wider adoption of high‑performance electric drivetrains during the next decade.