Dominating the Terex Construction area of the Terex stand at Bauma (F7, 710/711 ) is the company’s first EU Stage IIIB/US Tier 4i compliant rigid dump truck, the TR60 as well as the much anticipated Terex® TLB890 backhoe loader.
The TR60’s new 515kW EU Stage 3B compliant Scania DC16 engine provides the truck with up to 5% more torque than its predecessor in the key 1,300 – 1,800 rev range which translates into shorter hill climb times and improved fuel economy. To comply with emissions regulations, the new engine is fitted with Scania’s well proven Selective Catalytic Reduction (SCR) system.
Following the introduction of a new modulating rear brake retarder, the TR60 is the only rigid truck in the market to offer three independent retarders as standard. To slow their machine, operators can now choose to use either an engine exhaust brake, a transmission retarder or a modulating rear brake. Each of them work independently of each other, with the transmission retarder taking priority over the other two, if selected.
The benefit of having three retardation systems is that operators are provided with the best option for all possible applications, providing safe, controlled and productive downhill control. Additionally proper utilisation of the machine retarders can reduce stress on the foundation braking systems, extending service brake life and lowering the cost of ownership.
Inside the revised cab, the TR60 has upgraded electrical systems and the electrical interface is now similar to that in the latest Terex articulated dump trucks. A new integrated dash layout provides operators with additional feedback and greater control, enabling them to select machine functions for excellent productivity on any duty cycle.
Even with all the upgrades, the TR60 still has the lowest gross vehicle weight in its class. This benefits machine owners by reducing structural fatigue and fuel consumption, extending tyre life and lowering operating costs.
Those familiar with the TR60 will also notice improved visibility as a result of the lowered height of the air cleaners on the front platform of the machine. This, in addition to the repositioning of the engine coolant tank, has also improved service access.
Distinguished by its curved boom design, the TLB890 features a high pressure (250 bar) hydraulic system providing high tearout forces and fast cycle times. The curved boom design enables trucks to be positioned closer to the machine for short loading cycles.
An internally-extending Deep Dig dipper design reduces maintenance and develops an increased 41.1kN of tearout when retracted (as does the non-extending dipper) and 29kN when fully extended. At the digging end, bucket tearout reaches 60.3kN and this can be boosted to 67.8kN using the new Power Dig pin position on the optional Heavy Duty (HD) bucket.
The TLB890 is available with state-of-the-art pilot controls or conventional mechanical levers in SAE, ISO or cross pattern. Pilot control versions get a single variable displacement piston pump (in place of tandem gear pumps) and thumbwheels on the joysticks to control the dipper extension and any attachments. A second auxiliary line is available with both configurations.
At the front end, a slim bucket cylinder provides an excellent view of loader operations while still delivering 55.4kN of breakout. Intelligently-designed front axle steering geometry reduces steering effort while the reach and rake adjustable steering wheel helps to improve operator comfort.
The TLB890’s rear axle gives it a 41kph (25.6mph) maximum travel speed and its wet disc brakes are positioned outboard and have a bigger diameter to improve braking performance while at the same time reducing pedal effort.
The standard transmission is a four-forward/four-reverse Synchro Shuttle and a revised Servo Power Synchro (SPS) transmission with manual control and auto-shift capability is an option. This transmission uses hydraulic selector fork gear engagement (instead of clutch pack operation) which reduces drag, resulting in increased performance and fuel economy.
To increase operator comfort, the revised ROPS/FOPS cab is 100mm wider than previous Terex backhoes and has a large ‘up-and-over’ opening rear window to improve the view of the digging operation. A powerful air conditioning system rapidly cools the cab and there are opening rear quarter windows for extra ventilation.
Among the TLB890’s many maintenance and cost-reducing features are externally replaceable wear pads on the extending dipper and stabiliser legs, and cab entry steps that can be detached from the fuel tank for repair or replacement. A hard nose counterweight also protects components at the front of the machine.
To speed the daily checks and improve security, the isolator switch is positioned within easy reach beneath the fully tilting engine cover and the catch to release the engine cover is inside the cab. Also beneath the engine cover are new jump start posts for connecting jump leads to start other machines.