Equipment Type

Buying File Gallery: Off-Road Haulers

September 01, 2002

 

Liebherr: Two Rear Axles

 

Liebherr

 

Liebherr diesel electric haulers range in capacity from 190 to 400 tons and are either DC or AC drive, depending on the model. The TI 272 has a 2,700-hp engine and AC induction wheel motors. The hauler has two individual rear axles and features a truck frame that does not have to support much of the payload and a wider body with the pivot bearings much further apart, resulting in a considerably lighter truck. Weighing 334,000 pounds, the hauler will carry a payload of 320 tons. Each individual axle oscillates around its own suspension pivot.

 

Number of models: 4. Noteworthy features: Commonality among all Liebherr models, mainframes utilize A710 high-strength steel, load management design, front suspension and steering system enhance stability and reduce tire wear.

 

 

Terex: Transmission With Retarder

Six mechanical-drive haulers from Terex range in capacities from 35 to 100 tons. The smallest of the units, the TR35, is powered by a 319-hp engine teamed with an automatic transmission that is remotely mounted in the frame. It has an integral torque converter and hydraulic retarder. The front suspension consists of a Terex-manufactured king-pin strut and independent front-wheel suspension. Larger mining haulers are produced by Terex's Unit Rig division.

Number of models: 6. Noteworthy features: High-visibility from cab, rugged construction, smooth-shifting electronic transmission.

Caterpillar: Electronically Controlled Engine

Caterpillar 773E

 

The new Caterpillar 773E, with a nominal payload of 60 tons, has more power and greater productivity than the model it replaces. The 710-hp Cat 3412E engine represents an increase of 4.1 percent. Engine and mechanical drive train are electronically controlled, and components are electronically linked for integrated operation. Either a flat floor or dual-slope body is offered, and the flat floor can be equipped with a liner. To speed maintenance, the hauler features Cat's new QuickEvac on-board system that performs automated engine oil changes and pre-lubrication of the engine before cranking.

 

Number of models: 9. New models: 773E, 775E, 797B. Noteworthy features: Full line of mechanical-drive haulers, Cat Integrated Power Train, controlled throttle shift, neutral coast inhibitor, directional management and programmable top-gear selection, forced-oil-cooled multiple disc brakes.

 

 

Komatsu: Shift Shock Eliminated

Komatsu America HD605-7

 

The new Komatsu America HD605-7 quarry version hauler with a 69-ton capacity has a 17-percent larger body than the 61-ton HD465-7, yet retains the speed and maneuverability of the smaller hauler. The high-performance drive train features all-electronic controlled K-Atomics seven-speed planetary transmission and a hydraulic system designed for power and control. The transmission's electronic control system eliminates shift shock and torque cut-off to improve operator and engine efficiency. The system automatically selects the optimum gear.

 

Number of models: 12. New models: HM300-1, HM350-1, HM400-1, HD465-7, HD605-7. Noteworthy features: Spacious, quiet cabs with electric windows, full hydraulically actuated brake system, Komatsu designed engines, K-Atomics transmission.

 

 

Rimpull: Tilt-Up Electrical Console

Rimpull's Century III fully upholstered cab is acoustically tuned to meet a 76 dB(A) noise level. The cab features two full access doors and deluxe operator's seat. The tilt-up, fully enclosed electrical console mounts the ATEC system, electrical fuses and other electrical controls; plus it provides built-in space for a lunch box, trash container, operator's handbook and clipboard. The box beam main frame is fabricated using 80,000-psi high-nickel alloy steel top and bottom flanges. The rigid frame design incorporates five torque tubes, a frame stabilizer/superstructure support and integral front bumper.

Number of models: 3. Noteworthy features: Mechanical drive haulers are easily maintained.

Hitachi: Stabilized Ride

Hitachi EH 1600

 

With a 98.9-ton payload, the Hitachi EH 1600 has a front suspension system with an independent trailing arm for each front wheel. Neocon struts containing energy-absorbing gas and environmentally friendly compressible Neocon-E fluid are mounted between the trailing arm and frame. The cast rear-axle housing has a parallel link mounting with an A-frame top member. This provides a reduced "roll-steer" effect that results in a more stabilized ride. The Command Cab III features integral ROPS/FOPS and double wall construction for structural integrity. Foam rubber lining material, foam-rubber-backed carpeting and a multiple layered floor mat absorb sound and control interior temperature.

 

Number of models: 14. Noteworthy features: Durable frame resists bending and tortional loads, excellent service access, comfortable cab.

 

Buying File Feature: Rigid-Frame Haulers Make Smooth Operators

 

 

 

 

 

 

 

 
 

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