The drive-shaft torque sensor rides directly on the shaft itself, using a bearing grade plastic. The torque-sensor housing is axially constrained by locating it between two shoulders or alternatively using a groove in the sensor housing that interfaces with a shoulder on the shaft.
MagCanica offers two variations of drive-shaft torque sensors. The version shown is a small, lightweight unit, which features fully integrated electronics. Only DC power needs to be provided, and the output torque signal is returned over CAN along with additional diagnostic information. Rotation on the driveshaft is prevented through an anti-rotation feature (not shown) which tends to be installation dependent.