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Cat 374D Excavator

Increased Digging Forces, Stronger Undercarriage, Enhanced Comfort

The new Cat 374D hydraulic excavator, a direct replacement for the model 365C, combines added horsepower, stronger hydraulics and greater operating weight to boost overall performance, whether trenching, loading, lifting or handling attachments. Complementing these design basics are undercarriage improvements, a new range of buckets, operator-convenience features, safety enhancements and serviceability improvements. The fuel efficient 374D weighs 156,819 pounds (71,132 kg) and is designed for reliable, low-cost operation and long-life durability for optimum customer value. 

More power, capable hydraulics
Rated at 476 net horsepower (355 kW), the Tier 3/Stage IIIA-compliant Cat C15 engine provides the 374D with 18 percent more power than its predecessor, the 365C. Cat ACERT Technology equips the C15 with advanced electronic control, precise fuel delivery and refined air management to deliver clean combustion and optimum fuel efficiency. The electronic engine controller, with flexible fuel mapping, allows the engine to respond efficiently to specific operating conditions, which means more work for each fuel dollar.

The C15 torque characteristics enable the engine to deliver full power at maximum rpm, resulting in efficient hydraulic pump operation and enhanced hydraulic response. In addition, the new titanium-alloy compressor wheel in the turbocharger increases reliability and performance at higher altitudes.

The 374D implement hydraulic system features a 10-percent increase in flow and a 9-percent gain in main pressure, resulting in a significant boost in hydraulic horsepower. The added hydraulic power combines with larger digging arm and bucket cylinders to yield 17 percent higher digging arm forces and 12 percent higher bucket forces on machines with the standard (reach) boom and arm configuration. For units in the mass excavation configuration, digging arm forces also are up by 17 percent and bucket forces by 5 percent. The net result is shorter cycle times and increased bucket fill factors.

Also new in the 374D implement hydraulic circuits are electrically controlled regeneration valves, which assure positive response from the boom and digging arm cylinders. In addition to further reducing cycle times, the new valves yield an estimated fuel saving of more than 2 percent. Also saving fuel is the hydraulically driven, variable-speed cooling fan.

Buckets, undercarriage, serviceability
A new line of buckets for the 374D are designed for added strength and durability to accommodate the higher digging forces of the new machine. Bucket types include general duty, heavy duty, severe duty and extreme duty. All Cat buckets feature K Series GET (Ground Engaging Tools). Work tools for the 374D extend the machine application into such operations as demolition, scrap processing and quarry work.

Undercarriage improvements include redesigned track links that operate with less stress, improved carrier rollers, longer recoil springs for extended service life and new forged idlers for improved durability. The new idlers are positioned lower to promote added stability, and a 6-inch (160-mm) track-gauge increase further enhances the stable work platform.

In addition, the carbody (the structure mounting the machine upper to the track assemblies) is reinforced at the roller-frame interface, and a new bolt pattern is used at the connection point. The boom foot, skirt and counterweight mounting area also have been strengthened for longer service life and increased durability.

To facilitate routine maintenance, the 374D uses protected fluid drain ports and self contained hoses, spin-on filters, an integral pre-cleaner in the air cleaner (with electronic restriction sensing), testing ports in all pressure circuits and pressurized fluid sampling ports to assure reliable samples. Also, the Electronic Power Control (EPC) is now located in the air-cleaner compartment, allowing the cab floor to be washed without risk of damage to the EPC, although the EPC and electrical terminals are weather-proof. For the operator's convenience, fluid levels can be checked electronically at start-up.

Operator comfort and safety
For the operator's convenience and comfort, the height of the joystick consoles is now adjustable, and the response of the joystick control levers can be adjusted to the operator's preference through the monitor. The control pattern changer, also accessible through the monitor, allows operators to select preferred lever functions.

The monitor provides a full-color graphic display with comprehensive machine information (including fuel consumption) presented in either an English or ISO format. The monitor also displays images from the optional rearview camera.

To diminish heat and noise in the cab, the hydraulic control valve, pumps and reservoir are positioned away from the operator station. Metal-grating catwalks, 20-inches (500-mm) wide, are located on each side of the upper structure to provide safe access to maintenance points. The rear window, made of tempered glass, can be removed as a secondary exit.

Standard halogen lights provide exceptional jobsite illumination but can be replaced with optional High Intensity Discharge lights on the boom and upper cab if more illumination is required. Lights are time delayed to allow safe exit from the machine at night. As an added safety measure, travel, swing and implement functions are locked out when the counterweight removal system is activated.

 

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KOBELCO Introduces Upgraded SK35SR Model with Integrated iNDr Technology

KOBELCO's upgraded SK35SR excavator with iNDr technology.
KOBELCO's upgraded SK35SR excavator with iNDr technology.

KOBELCO Construction Machinery USA, has announced the launch of their newly enhanced SK35SR model. The SK35SR is now KOBELCO’s smallest model to feature their exclusive Integrated Noise and Dust Reduction Cooling System (iNDr). The newly redesigned, SK35SR model offers full-size performance with short-radius capabilities, quiet operation, and exceptional performance features. Prior to the new SK35SR model, KOBELCO’s innovative iNDr system was only available in larger model excavators.

This compact, yet robust machine incorporates KOBELCO’s iNDr technology into an advanced dual arrangement cooling system - the iNDr and eco-friendly system (iNDr+E). KOBELCO’s state-of-the-art iNDr+E feature utilizes the same high-tech iNDr system found in KOBELCO’s conventional excavators but differs by directing the muffler exhaust underneath the machine. In addition, the SK35SR’s innovative cooling system suppresses the machine’s noise to a minimal 76 dB., delivering the ultimate in quiet operation.

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New CAT M318F & M320F Wheel Excavators

When designing the new Cat M318F and M320F Wheel Excavators, Caterpillar solicited customer input for characteristics considered important. Heading the list were initial quality and reliability, low operating costs, operator comfort and safety, simplicity of operation and maintenance, durability, and environmental friendliness. The new models are designed around those goals, while retaining the best features of predecessor models, including the Cat Smartboom™, ride control, load-sensing hydraulics, dedicated swing pump, hydraulically driven cooling fan, large working envelope, and configuration/work-tool versatility.

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KOBELCO Debut's Tier IV Final SK350LC-9E Excavator

KOBELCO Construction Machinery has introduce its Tier IV Final SK350LC-9E model to the North American market. KOBELCO’s SK350 is among the company’s largest crawler excavator models and is well-equipped to provide operators with superior power and efficiency, while meeting the latest Tier IV Final emissions standards. The SK350 is set to deliver significant operational cost savings thanks to better fuel economy, greater efficiency and reduced service intervals.

KOBELCO’s robust 82,200 lb SK350 is powered by a 270 hp, Tier IV Final HINO engine allowing the machine to tackle a wide-range of heavy-duty applications with ease, while remaining highly fuel efficient. This model incorporates both Selective Catalytic Reduction (SCR) and self-cleaning Diesel Particulate Filter (DPF) systems to provide the lowest possible operation costs. This dual system minimizes Diesel Exhaust Fluid (DEF) consumption when compared to SCR only systems. KOBELCO’s Tier IV Final solution delivers as much as a 10% reduction in fuel consumption as compared to a Tier III machine, a tremendous benefit which KOBELCO achieved by studying and refining its hydraulic system performance in real jobsite conditions.

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Hyundai Construction Equipment Launches New R140/160/180LC-9A Excavators

Hyundai's New R180LC-9A Excavator.
Hyundai's New R180LC-9A Excavator.

Hyundai Construction Equipment has announced the addition of three new mid-size excavator models, the R140LC-9A, R160LC-9A and the R180LC-9A, to their 9A series product line. These machines will provide operators with enhanced features and benefits compared to prior models including a certified Tier 4 Interim engine upgrade, improved hydraulics, increased operator comfort and added durability. The R140/160/180LC-9A models provide plenty of power to get the job done and are ideal for excavating projects, road and utility work and demolition.

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Doosan introduces the DX300LC-5 and DX350LC-5 excavators

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New Volvo EC350E Excavator

The EC350E crawler excavator from Volvo Construction Equipment features a powerful Tier 4 Final/Stage IV engine, combining superior efficiency, productivity and ease of transportation in general earthmoving applications.

The new Volvo EC350E crawler excavator is an exceptionally productive machine that lowers operating costs through reduced fuel consumption and simple maintenance requirements in general applications. Powered by a proven Tier 4 Final/Stage IV-compliant Volvo D13 engine, the EC350E delivers powerful digging and breakout forces alongside reduced emissions and a significant improvement in fuel efficiency.

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Volvo expands special applications team

A modified EW230C wheeled excavator shows its high reach potential.
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John Deere Announces Newly Upgraded Excavators

John Deere has upgraded three models of its G-Series excavator line. The models – 250G LC, 350G LC and 380G LC – are equipped with a powerful Final Tier 4 engine and meet the strictest emissions standards, providing higher productivity, increased uptime, and lower daily operating costs.

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