Since November 2017, two Volvo A60H articulated dump trucks equipped with Allison's 6630 ORS fully automatic transmission have been part of the fleet of machines and vehicles of Bauunternehmung Albert Weil AG. The dumpers are currently being used for excavation work in several clay pits in the Westerwald region. The decision to purchase the largest articulated dumpers available on the market was based on a combination of factors: product quality, performance and cost-effectiveness.
Siershahn/Limburg an der Lahn, Germany – The articulated dump truck swiftly descends the narrow hairpin bends with a gradient of up to 20 % in the Siershahn clay pit. Even a full load is no big challenge for the Volvo A60H with Allison 6630 ORS fully automatic transmission, which can handle a maximum load capacity of 55 tons. The power is provided by a 470 kW Volvo D16J engine coupled to the fully automatic Allison transmission with its six forward and two reverse gears.
The Westerwald region (an area in the German low mountain range) is home to the largest contiguous clay deposits in Germany. Clay is so important here that is was also called the ‘white gold’ of the Westerwald. Since the raw material clay is not directly located on the surface, the top layers, which are the unusable layers, must first be removed by tracked vehicles and then hauled away in trucks. Around 3,500 to 4,500 cubic meters of inert mass are produced every day. To transport these enormous masses of soil in a cost effective way, Bauunternehmung Albert Weil AG decided in November 2017 to add two new Volvo A60H trucks equipped with Allison’s 6630 ORS fully automatic transmission to their fleet.
The loading capacity of the Volvo A60H is 40 % higher than that of the A40 series, which has an enormous impact on productivity and significantly reduces the cost per ton for dumper customers.
The two large dump trucks have been in daily use at Bauunternehmung Albert Weil AG for over a year now. Markus Bräunche, senior site manager responsible for heavy earthworks and removal, is pleased with the performance, productivity and cost effectiveness. “It was the increased productivity that really impressed us as we evaluated the new 60 tons Volvo articulated dumpers,” he explains the decision of Bauunternehmung Albert Weil AG to invest in these vehicles.
Klaus Rohletter, CEO of the company, adds: “Our company focuses on innovation in order to respond to the increasingly competitive market. Therefore, it is important that all construction machinery in our fleet is run with maximum operational readiness.”
The Allison 6630 ORS transmissions were specifically designed for the toughest applications in the construction industry. They are equipped with Continuous Power Technology™ which thanks to the torque converter provides more power to the wheels than other transmission technologies. An Allison fully automatic transmission increases power, while a manual or automated manual transmission (AMT) loses power with each gear change. When using an Allison Automatics there are no traction interruptions during gear shifts and the driver always has full control of the truck which fully loaded weighs almost 100
tons. Steep slopes and narrow hairpin bends can also be handled effortlessly, and most
importantly, there is no rollback.
Stephan Marker, market developer at Allison Transmission, confirms: “We hear again and again
from drivers from various fleets that the Volvo A60H with Allison Automatics is as comfortable to
shift and drive as a car. Drivers are also pleased to observe how low the fuel consumption is
given its weight.”
By eliminating the need for a dry clutch, as would be required in a manual or automated manual
transmission, maintenance costs associated with clutch wear are naturally also removed. The
Allison patented torque converter experiences very little wear and Allison transmissions require
only periodic fluid and filter changes to maintain peak performance. The Allison 6630 ORS
transmission in the Volvo A60H runs with the TES-353 high performance transmission oil, which
enables service intervals of up to 4,000 operating hours or 48 months.
“It’s very important that the dump trucks only stop for routine maintenance and inspections,”
says site manager Sebastian Eich. “With these trucks, we can achieve our targets. Normally,
the Volvo trucks with Allison transmissions run for 4,000 hours before preventive maintenance is
carried out. Fully automatic transmissions require less maintenance and offer longer service life
than manual or automated transmissions.”
Technical Specifications of the 6630 ORS Fully Automatic Transmission
The Allison 6630 ORS fully automatic transmission is tailored to fit the modern high-power Volvo
engines. It is an evolution in the Allison 6000 SeriesTM range of Off-Highway transmissions,
offering further increased durability and performance. The 6630 ORS contains a new internal
damper and updated torque converter turbine with improved vane geometry and anodized
surface treatment for increased durability. Furthermore, a new heavy duty retarder rotor is now
an available option.
The Volvo A60H also benefits from modifications to the transmission’s low and reverse
planetary gear assemblies. Increased oil flow lubrication delivers extended product life in
vocations like mining that demand high torque or prolonged reverse range operations. This
means the new Allison 6630 ORS transmission supports low total cost of ownership and high
profitability in Volvo‘s articulated haulers.
Technical Specifications Overview
Volvo A60H with Allison 6630 ORS
||Bauunternehmung Albert Weil AG, Limburg/Lahn,Germany
||Volvo D16J (Tier 4f/ Stage IV)
|Max. Power – SAE J1995 Gross
at engine speed
|470 kW (639 hp)
|Max. Torque SAE J1995 Gross
at engine speed
||6630 ORS Allison Transmission fully automatic
| Load Capacity
|Body, Heaped 2:1
| Total Operating Weight Unloaded