Hæhre Entreprenør AS, one of the largest contractors in Norway, has purchased 10 new Doosan DA40 Stage IV/Tier 4 Final compliant articulated dump trucks (ADTs) from Doosan Bobcat AS, a subsidiary of Rosendal Maskin AS, the Doosan and Bobcat dealer for Norway, based in Askim.
The deal, which was won in the face of stiff competition, was confirmed on the Doosan Bobcat stand at the Bauma 2016 construction equipment exhibition in Munich in Germany, the world’s largest trade show, at the start of a very successful week for Doosan Bobcat in terms of machine and attachment sales at the show.
Manufactured at the Doosan plant at Molde in Norway, the new DA40 trucks will replace five Doosan MT41 ADTs, each of which has provided between 12-15,000 hours of continuous hauling work on Hæhre projects throughout Norway. The new order follows on from the purchase of eight Doosan DA40 ADTs in 2013, which have provided excellent performance for Hæhre over the last three years.
Lars Hæhre, Managing Director of Hæhre Entreprenør AS, based in Vikersund in Norway, commented: “The high productivity of the DA40 ADTs we previously purchased has been very pleasing and was obviously a key factor in the decision to buy more DA40 machines from Doosan Bobcat AS. The existing DA40s have provided excellent reliability and fuel efficiency in operation, with a design that ensures that all six wheels are always in contact with the ground for unbeatable stability, traction and ground clearance on the uneven terrain we work on in Norway.”
Roy Haaker, Product Line Director for the Doosan ADT and wheel loader ranges in Europe, added: “We are delighted with the new order for 10 DA40s, which reflects the confidence shown by Hæhre in the Doosan ADT range. Hæhre has purchased over 80 ADTs from Moxy and Doosan since the company was formed in 1974 and with so much experience in the market, Hæhre has developed its own specifications for ADTs which the new machines will meet, with tailor-made features such as LED lights, reinforced body, protected driveline, full winter package and modified tailgates.”
Like all Doosan ADTs, the DA40 model features an articulation hinge positioned behind the turning ring to provide equal weight distribution to the front axle even during maximum steer articulation. This together with a free-swinging rear tandem bogie ensures equal distribution of weight to each wheel and guarantees permanent 6-wheel contact and drive for equal power distribution and excellent performance on difficult terrain. Collectively, the forward turning point, the unique tandem bogie and the sloping rear frame results in ‘best in class’ rough and soft terrain capabilities and avoids the need for electronic aids such as traction control.
‘Best-in-Class’ Fuel Consumption
The ‘best-in-class’ fuel consumption of the Doosan DA40 ADT is down to a combination of features including the Scania DC13 368 kW (493 HP) Selective Catalytic Reduction (SCR) and Exhaust Gas Recirculation (ECR) diesel engine and the ZF EP transmission, improving the transfer of power from the engine to the wheels for outstanding traction, with an electronic engine brake system, one of four brake systems on the trucks. When this is coupled with the enhanced rear differential system which reduces engine rpm and further increases machine durability, customers are ensured of an improved cost per tonne carried with the Doosan DA40 ADT.
Specifically designed by ZF for use on ADTs, the ZF EP countershaft transmission with automatic retarder provides eight forward speeds [with a top speed of 55 km/h (34 mph)] and four reverse speeds. In the DA40 model, the front differential is mounted directly onto the transmission, so there is no driveline that needs greasing and reducing the overall length of the machine for better weight distribution and a tighter turning circle. With smaller equal gear steps between gears, and a higher overall gear spread (eight forward gears), the transmission works optimally with the engine for better fuel efficiency.
In the DA40 model, the body capacity has been increased to 24.4 m³ and the payload has been boosted to 40 metric tons without a tailgate, an increase of more than 15% over the payload of the previous MT41 model from Doosan and the torque on the DA40 has been increased by 30% to improve the traction effort. The higher speed and payload of the DA40 contribute to reduced cost per tonne rates, allowing customers to increase profits from their mining, quarrying or earthmoving operations.
Hæhre Entreprenør AS
Hæhre Entreprenør AS was founded over 40 years ago by Lars’ father, Albert Kr. Hæhre and has since evolved to become a major player in road and construction development in Norway. Together with its subsidiaries, Hæhre Mek, Verksted AS, Hæhre Maskinutleie AS, Hæhre screed AS, Hæhre Auto AS and Zenith Survey, the group offers a wide range of products and services. Currently employing over 1200 staff, Hæhre Entreprenør AS provides customers with a unique blend of experience and expertise. This, together with a large fleet of state-of-the-art machinery, provides a platform for Hæhre to take on all sizes of project, including the largest and most complex developments in the country.
Rosendal Maskin AS was established in 1986 and is a family-owned business with 45 employees and a nationwide network of sales and service points in Norway. Over its 30 years of business, Rosendal has delivered well over 2000 construction machines for the Norwegian market.