Ammann has released two new articulated heavy tandem rollers that meet the world’s strictest emissions standards and feature an updated design. The ARX 90 StV and ARX 110 StV are powered by engines that are compliant with EU Stage V and US EPA Tier 4f emissions requirements.
Suitable applications for the machines include medium and large jobsites, transport construction (municipal and town roads, motorways, airfields, etc) and building construction (houses and industrial zones).
The ARX 90 has an operating weight of 9,720 kg and maximum weight of 11,170 kg, while the ARX 110 features an operating weight of 10,560 kg and maximum weight of 12,010 kg. Both models offer a drum width of 1,680 mm and maximum working offset mode of 1,850 mm.
The rollers all utilise a Deutz TCD3.6L4 engine. The differences between models result in the after-treatment structure, where there are varied systems for reducing pollution and NOx. According to Ammann, newly released models are equipped with the most technologically advanced after-treatment system.
Compaction output is high, and the system is efficient. Each drum is fitted with an independent vibratory pump. The rollers also have a heavy-duty, two-stage vibrator with a variable range of frequencies.
The ARX 90 and ARX 110 are built to be compact and drive vibration into the targeted materials and away from the operator. The design also provides visibility and comfort that helps make operators productive throughout their shift.
These tandem rollers are easy to control, with articulated steering with oscillation and a mechanism that enables work in crab mode up to 17 cm on both sides. A differential lock is standard.
The cab is very spacious, comfortable and quiet. Operator-friendly features include a multifunctional display in the steering wheel, adjustable steering column, and control switches on the armrest.
A rotating and sliding seat enables visibility with excellent sight lines to drum surfaces, edges and spraying bars. The operator can slide the seat beyond the machine contour for even better visibility. The onboard diagnostics can quickly alert operators to issues.
Every machine is ready for installation of Ammann ServiceLink for monitoring of machine functions, fuel consumption, required service intervals, etc. Customers can also install telematics solutions from other providers if they prefer, said Ammann.
The optional ACEforce system is highly intuitive to operate, with all information in a simple format on the central display. The system offers advanced functions for effortless and safe machine operation and compaction guidance. ACEforce also recognises if the machine is experiencing a double jump; if so, the system immediately informs the operator of corrective measures to prevent machine damage.
With oscillation, the drums can maintain constant contact throughout compaction. The process uses less force but delivers both vertical and horizontal energy – essentially massaging the aggregates into place.
Oscillation excels on sensitive jobsites, such as bridges or when working over sewers or utility lines, explained Ammann. In addition, oscillating rollers can safely work on mats that are too hot or too cold for traditional compaction methods. Oscillating compactors also seal joints without damaging cold mats.