Concrete mixer trucks operate in an environment defined by heavy loads, fluctuating stresses, and severe contamination.

At the centre of their drive system lies a two-stage planetary gearbox responsible for turning the drum throughout mixing, transport, and discharge.

Because the drum sits at an incline and the concrete mass is constantly mixed, the gearbox must transmit a combination of radial, axial, and shock forces.

These forces ultimately converge on the main spherical roller bearing, making it one of the most critical components in the gearbox assembly.

To read the full article, see the latest Motion+Drives issue or visit our website’s media library.