The leading truck's mechanism necessitated the removal of the coupling rod between the two main axles, leaving only the rear axle powered.

The main axles were stiffened, disk brakes strengthened and nose-wheel steering improved.

The length on the main axle is 101 meters.

This is the main axle used in 3rd Generation Dodge Ram 2500 and 3500 trucks.

Several manufacturers offer computer-controlled airlift, so that the dead axles are automatically lowered when the main axle reaches its weight limit.

The main axle of the watermill broke in 1925 thus bringing an end to the working life of the mill.

Modern wind turbines are generally referred to by the plane of rotation of the main axle (windshaft).

In 1908 and 1909 Krauss supplied 29 locomotives with a conventional outside driving gear, which nevertheless used a jack shaft between the main axles.

The main axle broke during the trials, but it was repaired in time for the opening on 1 October 1910.