Rokbak RA30 vs RA40: Which Articulated Dump Truck Fits Your Jobsite?

Choosing between the Rokbak RA30 and RA40 isn’t just about payload figures, it’s about matching the right articulated dump truck to the demands of your site. Both machines embody Rokbak’s well-earned reputation for durability, straightforward operation, and solid uptime, but each model serves a slightly different niche within earthmoving, quarrying and mining projects.

The RA30 is the nimble all-rounder of the pair. With a 28-tonne payload and a compact footprint, it’s ideally suited to tighter haul routes, steep quarry faces or infrastructure jobs where space is at a premium. Its manoeuvrability makes it a good fit for sites with changing ground conditions or shorter cycle times, where responsiveness matters as much as outright capacity.

Step up to the RA40 and you’re looking at a truck designed for volume. With a 38-tonne payload, it hits its stride on wide haul roads, long travel distances and high-production environments such as open-pit mines and large quarries. When paired with larger loading tools, the RA40 helps reduce cost per tonne by shifting more material per cycle and maintaining a consistent flow across the site.

Matching your hauler to the job

The guiding principle for ADT selection is simple: choose the hauler that complements your loading equipment and your haul roads. Most contractors aim for four to six excavator passes for a full body load. If the loading tool is too small, the RA40’s extra capacity goes unused; too big, and the RA30 becomes inefficient. Haul road widths, turning circles and site congestion also play a significant part. It’s why compact European sites, France being a prime example, often favour the RA30, while large-scale operations in markets such as Indonesia lean towards the RA40.

Tough machines built for tougher work

Many contractors now run mixed fleets, placing RA30s on tighter sections of a project and deploying RA40s on longer, open stretches to keep production balanced. The RA30 delivers dependable performance day in, day out, while the RA40 brings extra muscle for big-volume work. Operator comfort is strong on both models, with the RA30 gaining an edge thanks to its standard independent front suspension.

More than just hauling

Rokbak articulated haulers have long proved their versatility on specialist duties. Both the RA30 and RA40 are regularly adapted for roles such as water tankers for dust control or scraper units for stripping ground layers, a testament to their robust design and dependable drivetrains. Long operating hours, demanding material types and variable terrain are where these trucks earn their keep.

Rokbak product manager Graeme Blake and his team continue to work closely with contractors around the world, ensuring that whether a site needs the agility of the RA30, the payload punch of the RA40, or a combination of both, there’s a machine tailored to the job.

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