For drivetrain specialist Dana Inc., the evolution of its heavy vehicle drive head range reflects years of engineering development and real-world feedback from transport operators.
According to Matt James, Engineering Manager at Dana Australia, the company’s linehaul drive head platform has matured into a proven solution across a wide range of heavy vehicle applications.
“The Dana drive head is our linehaul product – it’s the drive head that goes into our tandem axles for linehaul trucks,” Matt says.
“We’ve got a really strong product in the lighter 40k market that runs extremely well in applications like agitators.”
It is in the heavier-duty platforms where Dana has built its strongest reputation among fleet operators.
“In the heavier-duty products, the 52-190 is the kind of heavyweight product and we’re really well renowned in the market for that. We have majority market share on that platform,” Matt says.
While Dana has long been recognised for durability in heavy applications, Matt says the company has been steadily expanding the capability of its lighter-weight drive head platforms, such as its 46-series.
The company has accumulated extensive performance data over the past several years as the drivetrain platform has become standard in production builds.
“We’ve been running this product as 100 per cent of our build for the last couple of years and as an optional fit for the previous five years,” Matt says.
“Since the launch of the drivetrain there have been a couple of thousand trucks built with these products that have delivered really good performance.”
That real-world experience has allowed Dana engineers to refine the design and introduce improvements that respond directly to feedback from fleets and operators.
One of the most significant upgrades to the Dana drive head range has been the introduction of an integrated rotor pump.
The pump is designed to enhance the performance of the differential by improving lubrication and temperature control, with the design focused on efficiency and simplicity, Matt explains.
“The key points with the pump are that it has low pressure and high efficiency,” he says.
“That means it doesn’t generate a lot of heat, and it doesn’t take power away from driving the wheels.”
As the pump operates at relatively low pressure, it also offers practical benefits for reliability and durability.
“Low pressure means it’s quite safe and it’s very abuse-tolerant in the field,” Matt says.
At the same time, the system is designed for straightforward servicing when required.
“It’s fully serviceable and we’ve got full service kits available,” Matt adds.
“In general, we don’t tend to see many field issues because the pump is quite simple and rugged. It tends to perform and just keeps going.”
The pump plays a key role in maintaining optimal lubrication conditions inside the drive head, such as lower operating temperatures, leading to extended oil life and better lubrication.
Lower temperatures also help reduce wear and extend service intervals, improving uptime for operators running high-mileage vehicles, resulting in significant long-term cost savings for fleet managers.
One of the defining features of the Dana drive head range is the high level of commonality between different models.
This modular approach allows the company to build lighter-weight drivetrains while maintaining the internal strength of heavier-duty designs.
“What’s good with the 46-170 drive head is that it has a lot of commonalities with our heavier-duty 190 product,” Matt says.
“The product that people know and recognise as a really strong Dana product shares the same internals.”
This design philosophy delivers several advantages for fleet operators.
“It gives you compatibility in terms of performance, installation, and service,” Matt says.
“These are major issues for fleet operators.”
Dana’s drive head range includes several models designed to suit different transport applications.
The company’s heavy-duty portfolio includes the D-170, D-190 and D-590 drive heads, each model designed to support a particular level of vehicle mass and operations, from linehaul and B-double prime movers (D-170) up to heavy haul and low-loader work (D-190) and mining (D-590).
Another advantage of the Dana drivetrain platform is the ability to mix and match drive heads and axle housings.
“Basically, you can mix and match drive heads and axle housings to give the most tailored option for the application,” Matt says.
The different configurations allow operators to match the drivetrain precisely to their workload.
“For example, the 46-170 is rated at around 110 tonnes, while the 50-170 is around 130 tonnes,” Matt says.
“The 50-190 is rated around 145 tonnes and the 52-190 around 155 tonnes.”
These variations provide additional strength for applications involving steep grades or higher gear stress.
“There are customers doing a lot of high-grade work where the gear stress is higher,” Matt says.
“In those cases, you might use larger gear ratios to suit the job.”
The modular nature of the drive head system also extends to differential lock configurations.
Dana builds its drive heads with diff-lock capability built in, allowing operators to upgrade their trucks if their operating environment changes.
“All our drive heads are built as diff-lock ready,” Matt says.
“If you’ve got a truck with no diff locks and you change the application, you can add them later.”
Matt cites a case where a truck initially operating in linehaul work may later move into more demanding terrain, such as logging work on unsealed roads.
“In that case, you can put a diff lock kit on it and adapt the truck,” Matt says.
Availability of parts and service support is another major factor in drivetrain reliability.
Dana maintains a strong distribution partnership with PACCAR Parts, ensuring operators can access components quickly across Australia.
Through this arrangement, drive heads, diff lock kits and service components are stocked nationwide.
“You can get the full kits through PACCAR Parts and TRP outlets,” Matt says.
The Dana system ensures fleets can obtain parts quickly when required.
“It doesn’t matter what diff-lock combination your truck has,” Matt says.
“There’s usually a drive head in stock that can be adapted using a conversion kit.”
This reduces downtime and allows trucks to return to service faster.
“That’s a big plus for operators because they don’t have to wait for a custom unit to be built,” Matt says.
“It means better uptime and getting the truck back on the road much quicker.”
Durability remains one of the most important measures of drivetrain performance.
Matt says Dana axles typically deliver extremely long service lives in Australian conditions.
“We usually see between 1.2 and 1.5 million kilometres from the axles, depending on the application,” he says.
Some fleets choose to run the axles without major refurbishment until that point, while others schedule mid-life refreshes, Matt adds.
“Some customers will refresh at around one million kilometres,” Matt says.
“Every fleet has a different use case and we work with them to find what works best.”
Dana also offers refresh kits that allow drive heads to be rebuilt rather than replaced entirely.
“These kits are available through PACCAR Parts,” Matt says.
The durability of the platform is reflected in the warranty coverage offered on trucks equipped with the drive head.
“We’ve been offering five-year, one-million-kilometre warranties on trucks with this drive head for several years now,” Matt says.
Performance data suggests the design is delivering strong reliability outcomes.
“We’ve seen a huge improvement in trucks reaching the end of that five-year period without a single warranty claim,” he says.
“That’s good news for fleet operators.”
With modular design, pump-enhanced efficiency and nationwide parts support, Dana’s drive head platform continues to evolve as a key component in the drivetrains powering Australia’s heavy vehicle industry.
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