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Terex Unveil New And Improved Loaders And Haulers

Terex have completed their Generation 7 articulated dumptruck line-up with the introduction of their two heaviest machines, the TA35 and TA40, which feature an all-new centrally mounted operator’s cab that will be adopted by the smaller models in the range.

This new cab, which replaces the side-mounted operator station previously used on the TA35 and TA40, benefits from increased internal space with larger glazed areas, while its central position makes it easier for operators to manoeuvre the machine on site.?

The cab has a completely new automotive-style dash, with a Siemens VDO flat screen information panel at its centre. The operator is well cared for, with air-conditioning, a fully adjustable suspension seat, a reach and rake adjustable steering column and plenty of storage space. A stereo radio/CD player is also included in the standard specification.

Both the TA35 and the TA40 are powered by electronically-controlled, 14-litre Detroit Diesel 60-series engines, which meet Tier 3A European emissions legislation while providing similar levels of performance to the previous TA35 and TA40 trucks. In the TA35 this equates to 400hp (298kW) and 2,000Nm (1,475lb ft) of torque, while the TA40 has 450hp (336kW) and 2,100Nm (1,548lb ft) of torque available.

In a change to the driveline, Terex have moved away from the previous remote-mounted ZF310 transmission in favour of an Allison HD4560 transmission, which is now mounted directly to the engine, making it possible to fit a remote two-speed transfer box after the transmission and thereby effectively doubling the number of gear ratios available to the operator. Top speed of the TA40 is 60km/h in the upper range, with sixth gear equal to 37.5km/h in the lower range. The TA35 has a top speed in the high range of 53.9km/h. A 10,000h/three-year warranty is now offered on the driveline.

Another benefit for the operator is improved retardation, both from the new oil-cooled service brakes and from an integral retarder working on the output shaft of the transmission. In addition, the Detroit engine is equipped with an equally effective engine or ‘Jake’ brake for additional retardation.

Unlike the previous TA40 and TA35, both of these retardation systems can be used separately or in conjunction with each other. The operator simply switches the engine brake and retarder on and then every time his/her foot comes off the accelerator pedal the two braking systems come into play. When used together, the engine brake and the retarder will virtually bring the truck to a halt, even fully laden on the steepest descents, prolonging service brake life and reducing operating costs.

Engine oil changes are extended to 500h, with transmission oil change intervals set at 3,000h. All of the hydraulic services now run through a single valve block for increased efficiency and there is a centralized bank of test points for the service technician.

At the front of the engine bay is a highly effective cooling pack arrangement. The TA35 and TA40 use twin hydraulically-driven cooling fans, mounted side by side in front of the engine. Rather than having one radiator behind another, all of the cooling cores are side by side in two main packs across the front of the engine bay. The benefit of this arrangement is that all the cooling cores get equal access to the cooling fans.

The trucks operate in permanent six-wheel-drive with a differential between each axle to prevent wind-up. All three axles have automatic limited-slip differentials and the leading rear axle has a drive-through differential which, along with the dropbox output differential, can be locked using a single switch on the
dash.

The all-welded, high-grade steel body remains virtually unchanged from its successful predecessors, offering a heaped capacity of 21m3 on the TA35 and 23.3m3 on the TA40. Maximum payload is 34 tonnes and 38 tonnes respectively.

New excavators

Terex have also introduced a totally new range of mid-weight crawler excavators, with the aim of offering a full line of Cummins-powered machines from a 1.2-tonne mini-excavator to an 85-tonne mass-excavator.

The first four models to arrive are the 22-tonne TC210, the 23.7-tonne TC225, the 25-tonne TC240 and the 26-tonne TC260 tracked machines, all of which use a Cummins QSB 6.7 engine, which offers from 141hp (104kW) in the TC210LC to 170hp (125kW) in the TC260LC.

This summer will see the launch of the 33-tonne TC320 and the 36-tonne TC360, which will eventually be joined by 52-tonne and 62-tonne models. At the top of the range is the currently available 85-tonne TC850LC, which offers 415kN of breakout force and can handle buckets of 5.5–7.0m3 capacity.

The machines have three modes of operation: Fine, Eco and Power; these modes control engine revs, thereby reducing hydraulic power and fuel consumption. Although pre-set at the factory, they can also be set by a dealer to meet individual operator or site requirements.?A power boost button, which works in all three operating modes, can be used to boost digging or lifting power.

All TC models feature a seven-valve main block, developed in conjunction with Bosch Rexroth, that provides auxiliary hydraulic power as standard across the range.

Heavier loaders

Terex are also broadening their wheel loader range at the heavier end with the introduction of four new models –– the TL360, TL420, TL450 and TL510, which offer bucket capacities ranging from 3.6m3 to 5.1m3. The TL420 and TL450 are already available, with the TL360 and TL510 set to join the line up later this year.

Powered by Cummins engines driving through ZF transmissions, the loaders have a single-lever servo control, with transmission control built into the lever head. All four machines use parallel kinematic lift arms for maximum breakout force and leverage, while the hydraulic system features two variable-displacement pumps that adjust automatically to the oil requirements and allow for power regeneration from the returning oil in the lift cylinders to boost performance. The parallel kinematic system also offers high shovel tipping forces and extended dumping heights.

Ground-level service access is provided by a large hydraulically tilting engine canopy, while the cab can be tilted to the side to offer access to the transmission. The cab itself has full-height glazing with air-conditioning fitted as standard.

Terex Equipment Ltd, Motherwell; tel: (01698 732121; email: [email protected]; website: www.terex.com

 
 

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