GlossaryBogie
A bogie is an arrangement of two or more closely spaced axles that work together to support and distribute a vehicle’s weight. It is commonly used on heavy trucks and trailers to manage axle loading and improve weight distribution.
Bogie axle groups are important when transporting heavy industrial equipment, mining machinery, and other cargo requiring careful weight distribution.
For example, a transport company moving a large mining machine may use a specialised trailer with suitable axle groups to distribute the combined weight of the equipment and vehicle.
The number of axles, their spacing, and the load carried by each axle group influence vehicle suitability and route planning.
In South Africa, axle arrangements must be assessed against applicable vehicle loading limits, manufacturer specifications, and abnormal load requirements.
Additional axles do not automatically allow unrestricted cargo weight. Incorrect loading can still exceed axle limits or create safety problems.
Defenlog considers axle configuration, cargo weight, and trailer suitability when planning Heavy Equipment & Specialised Transport movements across South Africa.
Frequently Asked Questions
A single axle supports weight at one axle position, while a bogie uses two or more closely spaced axles to distribute the load.
Yes, provided the trailer's design, load capacity, axle configuration, and route suitability meet the requirements of the equipment.
Yes. Axle spacing, axle loads, vehicle dimensions, and total combination mass may affect permit assessments.
Yes. Incorrect cargo positioning or excessive weight can overload an axle group, even when the total vehicle mass appears acceptable.
Yes. Axle spacing and trailer design can affect manoeuvrability, especially on narrow roads and restricted industrial sites.