Caterpillar
Electronic controls boost efficiency
Since rolling out its H-Series motor grader line in 2002, Cat has updated its offerings with a series of improvements. Most recently, the company upgraded two all-wheel-drive models with an automotive-style cruise control feature, and electronically controlled engines that improve efficiency and reduce emissions. Other improvements include quieter operator stations, and a number of service and maintenance enhancements.
The 33,670-pound 143H now has a base power rating of 165 horsepower; that automatically increases to 185 horsepower in higher gears when all-wheel-drive is engaged, thanks to Cat’s Variable Horsepower feature. The 35,890-pound 163H has a base power rating of 180 horsepower, which increases to 200 horsepower with VHP. The new engines improve fuel efficiency by about 10% and enhance performance by producing high torque output at low rpm and high torque rise.
Cat’s next-generation of motor graders, the M-Series, is expected to debut in the first half of 2006. In addition to featuring Tier 3 engines, the M-Series will take a dramatically different approach to controls, replacing the familiar row of levers with two joysticks that use push-button and stick movement to control machine functions and blade adjustments.
Volvo Construction Equipment
New motor grader family set to debut
Less than four years after rolling out its B-series motor-grader line, Volvo Construction Equipment is getting ready to issue an even more advanced motor grader generation, the G900 series.
Stimulated by the changeover to Tier 3 compliant engines, Volvo elected to engineer upgrades throughout the machines at the same time. The seven-model series consists of four models that use the 7.2-liter Volvo D7 engine, and three using the 9.4-liter Volvo D9 engine. Both engines meet Tier 3 emission standards without requiring additional equipment or after-treatment of exhaust gases. All models have three power ranges, allowing the operator to match engine power to the application to optimize performance and fuel efficiency. The D7-powered models range from the 34,300-pound G930 (155 to 195 horsepower) to the all-wheel-drive, 36,800-pound G960 (195 to 235 horsepower). The D9-powered models include the 39,000-pound G970 (210 to 250 horsepower)and its all-wheel-drive sibling, the 40,500-pound G976 (225 to 265 horsepower), plus the 46,300-pound G990 (225 to 265 horsepower).
Volvo says its use of wide-stance blade-lift cylinders coupled with a low-angle side-shift cylinder provides the industry’s most stable grading platform. The machines are said to have precise, instantly responsive blade controls thanks to load-sensing hydraulics and a powerful twin-gear, direct-drive circle-turn system. Volvo says its circle-turn system also has the strength to hold or turn the moldboard smoothly while moving under full load. The company says this combination of precision and performance results in more “one pass” finishes.
Volvo’s HTE840 transmission is standard on the new grader family. It has selectable Manual and Travel modes, and can be ordered with an optional Autoshift mode, too. Volvo also offers an optional new HTE1160 transmission which it bills as the industry’s first 11-speed motor grader drive train. Autoshift is standard on the new transmission, and its 11 forward and six reverse speeds are said to offer more control at low speeds, more precision at normal speeds, and more efficient travel at high speeds.
The new line’s two all-wheel-drive models combine four-wheel tandem drive with Volvo’s front-wheel Creep Mode which is designed for fine grading operations. The operator has 16 selectable levels of aggression to match machine performance to the task at hand.
John Deere
New series introduced in 2005
John Deere made more than 100 changes in its new D-Series motor graders, unveiled at Conexpo-Con/Agg last year. The new cab features 26% more space and 40% more glass than previous models, as well as improved heating and cooling. The six-model lineup features six-wheel-drive and tandem-drive models, with engines ranging from 185 to 245 horsepower. The new engines feature 25 to 40% torque rise for better lugging, according to the company, and they work with John Deere’s exclusive “event-based” transmission which senses the load and automatically adjusts the clutch-pack engagement accordingly.
Other features include a longer wheelbase for improved fine-grading and ride, additional operating weight for balance and traction, and a more efficient moldboard design.
Case
Visibility and serviceability
Case says its three new 800 series motor graders have best-in-class serviceability to go with a flip-up rear hood, a beefy A-frame and moldboard design, and outstanding visibility to all sides.
The Case 845, 865, and 885 graders range in power from 140 to 205 net horsepower and in operating weights from 29,777 to 37,950 pounds. The optional Case 865 DHP delivers variable horsepower and extra power for long-haul grading or snow removal.
While other graders use swing-out engine access doors, Case graders have a one-piece, non-metallic sloping rear hood that provides excellent rear vision while working and flip-up engine access for service. Swing-out batteries provide quick access to filters and daily service points. Flip down panels along the bottom of the hood provide additional access. Case says these features and others add up to an SAE J817 serviceability index that tops all other major competitors.
Other features include moldboards in 12-, 13-, and 14-foot widths that pitch, tilt, and move laterally to handle a variety of jobs. The graders articulate 25 degrees left or right, and the front wheels lean up to 17.5 degrees left or right to provide counterforce to the blade and prevent side drift.
Champion Motor Graders
Next-generation compact graders
Champion Motor Graders announced its new C80 C and C86 C models late last year, calling them compact graders that think like big graders. The all-wheel-drive C86 C is the company’s largest grader, at 15,500 pounds; the C80 C is its tandem counterpart.
The redesign of these two machines starts with the front axle, which now provides 50 degrees of steering angle left and right, compared to 35 degrees in previous models. Champion says this gives the new machines an industry-best turning radius — a straight-frame turning radius of 25 feet and an articulated turning radius of 19 feet. The axle also now features spherical bearings at all moving points to provide a longer service life, and 22 inches of ground clearance, 6 inches more than the previous models and enough to go where the big graders go, according to the company
Also new is a 21-inch moldboard, tallest in the category. A new blade lift arrangement increases featherability by increasing the blade lift stance 14 inches to a full 4 feet across, widest in its class according to Champion. The company also replaced its traditional ball joint for the articulation cylinders and engineered a clevis-style mounting for optimum strength. The cylinders are now mounted on spherical bearings for increased service life.
Maddock
Joystick controls for graders
John Deere dealers are now offering Maddock Industries’ GraderStick joystick control system as optional equipment on Deere motor graders. The GraderStick is a single-lever, multi-function joystick control system that can be added to most motor graders and operates all of the hydraulic control functions. It gives the operator proportional fine control for the lift/lower and side-shift functions of the blade and adds single hand straight up and straight down blade control. The operator can easily perform multiple blade functions simultaneously.
Champion Motor Graders
Full line of attachments
To enhance the versatility of its compact motor graders, Champion has created a full line of attachments, including a front-mounted “V” scarifier for loosening hard-packed aggregate, a side dozer that replaces the moldboard and is used to remove and/or retrieve displaced material under highway guardrails, and a rear-mounted compaction roller that allows the machine to perform the work of two machines in some applications. Other attachments include a dozer blade/scarifier for back-blading in tight spaces, a rotary broom, a windrow eliminator for gravel road work, a plate tamper, and a rear-mounted rippifier.
New Holland Construction
Largest moldboard circle
New Holland says its B-Series motor graders feature a 69-inch steel moldboard circle, largest in the industry, that permits a full range of motion, allowing the operator to rotate the moldboard a full 360 degrees and easily change the blade-cutting angle. The moldboards feature an exclusive “involute” curve profile that creates a rolling action that lets the operator grade faster, according to the company.
The moldboard can be angled up to 90 degrees for slope and ditch work. Easy maintenance features include a swing-up hood, sight glasses for fast fluid checks, and ground-level access to dipsticks. Single piece panels drop down on each side for greater access to components.
LeeBoy
Upsized grader offering
LeeBoy’s top-of-the-line 785 motor grader is a 23,500-pound machine engineered to perform large motor grader functions such as road building, ditch cutting, snow plowing, and fine grading.
The 785 features 20-degree boom articulation in either direction, wheel lean, hydraulic power steering, and a pressure-compensated pump system. Its sliding moldboard has a total sideshift reach of 60 inches and 32-degree forward tilt. Its 54-inch-diameter, gear-driven turntable features 23 inches of sideshift with 360-degree rotation. A 46-inch, front-mounted scarifier provides ripping power with up to 11 ripping teeth (a 73-inch, rear-mounted scarifier with 13 teeth is available as an option), and its heavy-duty tandem axles are gear-driven for enhanced performance and reduced maintenance.
Flannegan Western
Compact, lightweight grader
Flannegan Western has launched a new compact motor grader that weighs 6,050 pounds, measures just over 15-feet long and 8-feet high, and can be transported on a 12,000-pound GVWR trailer and a pickup truck driven by nearly any licensed driver (no CDL required). The FW 865 has a 65-horsepower diesel engine, hydrostatic transmission, and precision grading controls.
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