Heavy equipment machinery

July 4, 2007

What are Motor Graders?

Filed under: Motor Graders

Motor graders are used in excavation and precision finishing in the final shaping of surfaces where pavement will be laid. They come in all types and sizes and are used for a number of construction jobs.

Motor graders have a blade carried between the front and rear wheels. The blade is referred to as a grader and is controlled either mechanically or hydraulically. The blade can be extended from either side of the grader. Both ends of the blade can also be raised or lowered depending on the application, and are operated through a set of gears located within the cab of the grader.

Motor graders may be used for shallow ditching and fields. Most models, however, are used for roadwork. Motor graders are used to smooth out the surfaces on which roads are being laid, as well as to make the surface flat. Rough grading is performed with heavier engineering vehicles, such as scrapers and bulldozers. Although these look a lot like motor graders, they are a different type of equipment with a different purpose.

Motor graders are also commonly used in the maintenance of unpaved roads. Roads that are unpaved tend to become rutted during harsh weather. As a result, they frequently need to be smoothed over. In addition, motor graders are used for removing rocks from a road surface on unpaved roads, which is generally caused by normal usage, as well as in areas of rockslides.

Today’s motor graders have the ability to be calibrated for more delicate use as well. Therefore, these large machines can now be used for jobs in which the roadway would have been torn up in the past from the use of motor graders.

With the advancements made in motor graders, they are now also used to set native soil foundation pads. At large construction sites where buildings are being razed, motor graders can clean the foundation in half the time a scraper would take. Motor graders are also used for asphalt operations in order to cut and remove asphalt for base preparation. In addition, they are used to lay down hot or cold mix, to fill ruts, and for general road construction clean up.

Motor graders are more versatile these days than ever. Large construction companies are discovering that motor graders can do more than the job they were originally designed for, and as a result, motor graders can replace several other pieces of equipment. Motor graders are also being developed with more sophisticated control units, allowing for more intricate work.

http://www.wisegeek.com/what-are-motor-graders.htm

What are Motor Graders?

Filed under: Motor Graders

Motor graders are used in excavation and precision finishing in the final shaping of surfaces where pavement will be laid. They come in all types and sizes and are used for a number of construction jobs.

Motor graders have a blade carried between the front and rear wheels. The blade is referred to as a grader and is controlled either mechanically or hydraulically. The blade can be extended from either side of the grader. Both ends of the blade can also be raised or lowered depending on the application, and are operated through a set of gears located within the cab of the grader.

Motor graders may be used for shallow ditching and fields. Most models, however, are used for roadwork. Motor graders are used to smooth out the surfaces on which roads are being laid, as well as to make the surface flat. Rough grading is performed with heavier engineering vehicles, such as scrapers and bulldozers. Although these look a lot like motor graders, they are a different type of equipment with a different purpose.

Motor graders are also commonly used in the maintenance of unpaved roads. Roads that are unpaved tend to become rutted during harsh weather. As a result, they frequently need to be smoothed over. In addition, motor graders are used for removing rocks from a road surface on unpaved roads, which is generally caused by normal usage, as well as in areas of rockslides.

Today’s motor graders have the ability to be calibrated for more delicate use as well. Therefore, these large machines can now be used for jobs in which the roadway would have been torn up in the past from the use of motor graders.

With the advancements made in motor graders, they are now also used to set native soil foundation pads. At large construction sites where buildings are being razed, motor graders can clean the foundation in half the time a scraper would take. Motor graders are also used for asphalt operations in order to cut and remove asphalt for base preparation. In addition, they are used to lay down hot or cold mix, to fill ruts, and for general road construction clean up.

Motor graders are more versatile these days than ever. Large construction companies are discovering that motor graders can do more than the job they were originally designed for, and as a result, motor graders can replace several other pieces of equipment. Motor graders are also being developed with more sophisticated control units, allowing for more intricate work.

http://www.wisegeek.com/what-are-motor-graders.htm

What are Motor Graders?

Filed under: Motor Graders

Motor graders are used in excavation and precision finishing in the final shaping of surfaces where pavement will be laid. They come in all types and sizes and are used for a number of construction jobs.

Motor graders have a blade carried between the front and rear wheels. The blade is referred to as a grader and is controlled either mechanically or hydraulically. The blade can be extended from either side of the grader. Both ends of the blade can also be raised or lowered depending on the application, and are operated through a set of gears located within the cab of the grader.

Motor graders may be used for shallow ditching and fields. Most models, however, are used for roadwork. Motor graders are used to smooth out the surfaces on which roads are being laid, as well as to make the surface flat. Rough grading is performed with heavier engineering vehicles, such as scrapers and bulldozers. Although these look a lot like motor graders, they are a different type of equipment with a different purpose.

Motor graders are also commonly used in the maintenance of unpaved roads. Roads that are unpaved tend to become rutted during harsh weather. As a result, they frequently need to be smoothed over. In addition, motor graders are used for removing rocks from a road surface on unpaved roads, which is generally caused by normal usage, as well as in areas of rockslides.

Today’s motor graders have the ability to be calibrated for more delicate use as well. Therefore, these large machines can now be used for jobs in which the roadway would have been torn up in the past from the use of motor graders.

With the advancements made in motor graders, they are now also used to set native soil foundation pads. At large construction sites where buildings are being razed, motor graders can clean the foundation in half the time a scraper would take. Motor graders are also used for asphalt operations in order to cut and remove asphalt for base preparation. In addition, they are used to lay down hot or cold mix, to fill ruts, and for general road construction clean up.

Motor graders are more versatile these days than ever. Large construction companies are discovering that motor graders can do more than the job they were originally designed for, and as a result, motor graders can replace several other pieces of equipment. Motor graders are also being developed with more sophisticated control units, allowing for more intricate work.

http://www.wisegeek.com/what-are-motor-graders.htm

July 3, 2007

Motor grader marketers in North America are bringing a flood of new models to market.

Filed under: Motor Graders

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.

http://obr.gcnpublishing.com/articles/NewProds/feb06bid.htm

Motor Graders for Production Support

Filed under: Motor Graders

Wheel loaders, excavators and haul trucks are the primary movers of material from the pit face to the plant at aggregate operations. Short loading cycle times and proper loader-truck and truck-crusher size matching are critical to maximizing their efficiency. But haul speed also significantly impacts productivity.


++lgsquarecount; var a = Math.random(); var zzzzadslotzzzz= a * 100000; document.write(’‘); Penton Media - Rock Products, Click Here!Primedia Business - Rock Products, Click Here! if ((!document.images && navigator.userAgent.indexOf(’Mozilla/2.’) >= 0) || navigator.userAgent.indexOf(”WebTV”)>= 0) { document.write(’‘); document.write(’‘) } <A HREF="http://ad.doubleclick.net/jump/rockproducts.iclick.com/adtarget;page=rock_motor_graders_production;subss=;subs=;area=mag;site=rockproducts;kw=;sz=250x250;tile=1;pos=lgsquare1;ord=123456" > <IMG SRC="http://ad.doubleclick.net/ad/rockproducts.iclick.com/adtarget;page=rock_motor_graders_production;subss=;subs=;area=mag;site=rockproducts;kw=;sz=250x250;tile=1;pos=lgsquare1;ord=123456" border="0" height="250" width="250"/></A>

Support equipment, therefore - such as motor graders to keep haul roads smooth and well drained - can be important production tools. In a 1996 article in Rock Products ("Tips for turning haulers into money-makers," March 1996, page 50), Caterpillar’s Don Stretch listed the benefits of a good haul road:

- lower repair costs;

- better tire life;

- more up-time;

- more efficient operators; and

- safer operating environment.

Rough haul roads create high rolling resistance and force operators to slow down. Decreasing average haul speed by as little as 11/42 mph could cost an operation 50,000 tpy in lost production, according to Stretch.

In addition, proper grading of haul road surfaces improves drainage, helping maintain the road’s structural integrity and eliminating water puddles, he said. Keeping truck tires dry can avoid some repair costs because wet tires are more susceptible to cuts.

Rough haul roads also increase the risk of tire and vehicle damage caused by rock that has fallen off the bed of a bouncing truck. A smooth road allows full truck loads to reach the crusher without scattering rock along the way.

Wheel loaders can accomplish some haul road maintenance, but, because that is really outside their design application, it is not the most efficient use of that production loading tool. For heavily used haul roads, a motor grader provides the most effective maintenance.

At least five companies market medium to large motor graders suitable for a quarry environment. Table 2 lists the smallest and largest grader models offered by each company and some selected specifications.

Caterpillar manufacturers 10 grader models, including the largest machine available. Cat’s 24H, designed for large mine haul road maintenance, has a standard 24-ft blade and is powered with a 500-hp diesel engine.

Champion, which traces its grader roots to the 1870s, is now part of the Volvo Construction Equipment Group. Its Series VI 700 models, introduced in 1999, feature an improved blade-control systems that allows positioning of the blade up to 90 vertically on either side of the grader and up to 21 downward for profile cuts. The blade can be lowered 32 in. below ground level for deep cuts.

Komatsu America markets a line of smaller Galion motor graders - 144 to 204 hp - plus two larger models, up to 280 hp. The company recently introduced a new line of graders called Laterra. The three Laterra models - GD555A-3, GD655A-3 and GD675A-3 - range in operating weight from 30,525 to 34,390 lb and in horsepower from 140 to 180 hp.

The Laterra models have a dual-mode transmission that allows the operator to move from torque converter to direct drive mode by the flick of a switch. They also have variable-displacement pumps and load-sensing systems to provide better speed and responsiveness from hydraulic components, the company said.

Graders lope, or bounce, because of natural vibration. Grader design, tire size and air pressure, weight distribution on each axle, road surface profile and speed all determine the vibration frequency, according to Bridgestone/Firestone Off-Road Tire Co. (Rock Products, "Maintaining smooth haul roads: the ups, downs, ins and outs of road grader loping," Nov. 1996).

BFOR conducted tests, independently and with equipment manufacturers, that identified several causes of loping and some ways to reduce the problem.

- Out-of-round wheel assemblies - deflate tire, rotate 180 on rim and remount.

- Flat spots on tires - warm up tires by running unloaded for a short time before starting work. If flat spot is cause by tire damage, rotate or replace the tire.

- Uneven tire wear - rotate or replace tires.

- Improper weight distribution - field tests indicate that graders should carry 30% of their weight on the front tires; 70% on the rear. Check weight distribution with attachments and readjust to 30/70, if possible.

- Improper tires - match tire size and type to equipment and conditions. Larger tires at lower inflation pressures may reduce loping, but can change the effective transmission ratio.

- Tire pressure not matched to load - match cold tire inflation pressures to specifications for each tire’s actual load.


http://rockproducts.com/mag/rock_motor_graders_production/

Motor-Grader Technology Hits High Gear

Filed under: Motor Graders

Today’s motor-grader market offers more choice and more technically advanced machines than ever before.

Although Caterpillar did intensive preparatory homework, we’d still bet that you could have almost heard the company take a corporate deep breath just before deciding to design its new M-Series motor graders without conventional controls, that is, less the two banks of control levers that flank the steering wheel — and, yes, less even the steering wheel. Replacing all those familiar controls are but two multi-function joysticks. Caterpillar’s big news, however, is only the most recent in a string of major announcements regarding motor-grader refinement and new-model introductions. Motor-grader manufacturers have been busy.

In April, for example, Volvo officially introduced its seven new G900-Series machines, which reflect an absolutely new design, compared to their B-Series predecessors, and feature an industry first — an optional 11-speed transmission. And earlier this year, Terex added four torque-converter-drive motor graders to its product mix. Then, going back little more than a year, Deere replaced its C-Series range with significantly redesigned D-Series machines, including two new models larger than any the company has yet offered.

Preceding all this activity was Komatsu’s introduction of its Laterra Series, which features machines that have both a torque-converter-drive mode and a direct-drive mode. Other significant motor-grader news in the past 24 months or so has included LeeBoy’s introduction of its largest machine ever, the 25,000-pound 785, Champion’s redesign of its C80C and C86C, plus Huber’s refinement of its Maintainer into the new D-Series M-850. By our reckoning, not counting Caterpillar’s H-Series models (some of which will remain available until mid-2007), motor-grader buyers now have more than 60 model choices in today’s market.

This resurgence in motor-grader design refinement may have received impetus from the market turnaround that took hold in 2004. After a down cycle that lasted for the best part of five years, sales numbers began to climb that year — and are now projected to grow moderately for the next several years from the current annual global-market total of 7,000 to 8,000 units. North America remains the largest market for motor graders, consuming about half the annual total.

Power-train refinement

When preparing the specification chart for this report, we noted with interest the variation in drive-train design reflected in today’s motor graders, namely, the use of hydrostatic transmissions, direct-drive powershift transmissions, and powershift transmissions with torque converters.

What the specifications show is that machines on the small end of the weight scale are generally hydrostatically driven, the largest hydrostatics being the PSI MG618 and MG622 models, which weigh in at about 18,500 and 23,000 pounds, respectively. But not all smaller units are hydrostatic. The Noram 65E Turbo, for instance, at 16,800 pounds and 110 horsepower, uses a powershift transmission with a torque converter.

Although hydrostatic drive may be the most cost-effective design for smaller units, manufacturers using the technology say that the drive system provides exceptional low-speed performance and control, compared with controlling a powershift transmission with an inching pedal and brake.

According to the chart, 15 models use hydrostatic drive, 31 use a direct-drive powershift, and another 15 use a powershift in conjunction with a torque converter. According to Komatsu, its Laterra Series models, in the four lower gears, provide either torque-converter-drive or direct-drive (when the converter is locked). This system, says the company, takes into account that one or the other of the drive modes may yield better performance in a given situation.

Direct-drive systems, however, are becoming friendlier, as evidenced by the new Deere, Volvo and Caterpillar transmission systems that allow directional changes without using the inching pedal. Many direct-drive powershift systems also incorporate an "auto-shift" feature, which relieves the operator of tiresome shifting in operations that require going up and down through the gears. And Volvo, with its optional 11-speed powershift, makes the point that smaller steps between gears allows the operator to more easily find the most efficient torque/speed combination for a given situation.

Front-wheel-assist systems also are becoming friendlier, in terms of allowing the operator more control. Deere’s D-Series system, for instance, allows the operator (as do other systems) to dial in how aggressively the front wheels pull, and it also allows the operator to adjust the inching-pedal mode to either engage the front wheels simultaneously with the tandem, or to delay engagement until the tandem has taken hold. The Cat M-Series models and the Volvo G900-Series models that are equipped with all-wheel drive feature a front-wheel-drive-only mode for use in situations requiring precise control.

And to complement drive-train refinement, the variable-horsepower feature, available with engines in certain motor-grader models, also is being refined. According to manufacturers offering the variable-horsepower feature, its purpose is to provide custom power and torque curves for certain gears or gear groups in order to more effectively match machine performance to the application. For example, Volvo’s new system provides three power ranges and uses a speed/power switch to limit maximum rpm in the two lower ranges. Caterpillar’s new variable-horsepower system, standard on the M-Series, delivers additional horsepower in 5-hp increments as transmission gear selection increases.

More control, easy service

Generalizing about the implement hydraulic systems on today’s motor graders, we’d say that more systems are being designed to provide enhanced efficiency, better multi-function operation and reduced hydraulic effort at the control levers — the latter benefit also complemented by levers that may be closer together and have shorter throws than previous designs. To gain these advantages, some larger machines are now using pressure-compensated/load-sensing systems that incorporate variable-displacement pumps.

Although these variable-flow systems are extremely efficient, there’s always a danger in touting their advantages, lest simpler systems be perceived as inferior. That’s not the intent here (nor the truth), because constant-flow systems also have been refined for greater efficiency and controllability, and in some instances are the most cost-effective choicefor smaller machines.

Another focus of today’s motor-grader design is the geometry of the moldboard and draft frame. By adjusting the angles at the moldboard’s cutting edge and at its top radius, for example, material entering the blade can be made to start rolling sooner and to encounter less resistance as it moves up and across the blade. Less resistance means that the grader moves more smoothly through the cut and uses less horsepower (and less fuel) in the process. Among draft-frame changes, some manufacturers have adjusted this component upward, thus increasing the free space between the top of the moldboard and the bottom of the circle to minimize plugging in sticky material.

Another basic observation about today’s graders is their enhanced serviceability. This includes everything from advanced electronic diagnostic systems, to centralized lubrication banks, to ground level, one-side access to routine service points.

But of special note are new systems for maintaining the adjustment of the draft frame, circle and moldboard. In some instances, for example, moldboard shims have been eliminated, and in other systems, easy access to circle wear inserts allows changing these components in a couple of hours. As more motor graders are fitted with automated grade-control systems, of course, keeping the moldboard and its related support systems in adjustment has become critical.

And one final thought that brings us full circle to the use of joystick controllers. Reliable market intelligence tells us that at least one other motor-grader manufacturer has prototype machines running with joysticks. But, all you seasoned operators can relax. Motor graders are still best operated by experienced hands, whether those hands are gripping joysticks or conventional controls.

Motor-Grader Specifications Max. HP (net) Weight (lb.) Trans. Type* Speeds** Fwd/Rev
*P = Powershift
H = Hydrostatic
P/TC = Powershift w/ torque converter
**Speed ranges for hydrostatics
***Caterpillar’s new 14M will be available 4th Quarter, 2006. Subsequent M-Series models likely will be available in 1st and 2nd Quarters, 2007.
****Volvo offers both an 8-speed and an 11-speed powershift transmission.
Basic Equipment
601 49.5 7,300 H 2/2
Case
845 140 29,777 P 8/4
865 169 32,077 P 8/4
865DHP 190 32,077 P 8/4
885 205 37,950 P 8/4
Caterpillar***
120M 160 30,640 P 8/6
12M 180 31,895 P 8/6
140M 200 33,235 P 8/6
160M 230 35,030 P 8/6
14M 280 46,930 P 8/6
16M 320 57,510 P 8/6
24M 510 137,695 P/TC 6/3
120H 140 27,880 P 8/8
135H 155 28,840 P 8/8
12H 185 31,320 P 8/8
140H 205 32,360 P 8/8
143H 205 33,670 P 8/8
160H 220 34,560 P 8/8
163H 220 35,890 P 8/8
14H 240 41,010 P 8/8
16H 285 54,350 P 8/8
24H 500 136,610 P/TC 6/3
Champion
C60B 80 12,800 H 2/2
C66B 80 13,400 H 2/2
C70B 80 13,050 H 2/2
C80C 80 15,000 H 2/2
C86C 110 15,500 H 2/2
Changlin
PY165H 165 31,526 P/TC 6/3
PY190H 190 33,069 P/TC 6/3
PY220H 220 34,172 P/TC 6/3
Deere
670D 185 32,010 P 8/8
672D 185 33,630 P 8/8
770D 215 32,670 P 8/8
772D 230 34,280 P 8/8
870D 235 34,750 P 8/8
872D 245 36,210 P 8/8
Flannegan Western
Model FW 65 6,000 H 2/2
Huber
M-850-D 80 9,380 H 2/2
Intensus
GR180 180 33,951 P 6/3
GR215 215 37,478 P 6/3
Komatsu
GD555-3 140 30,950 P/TC 8/4
GD555-3 VHP 160 30,950 P/TC 8/4
GD655-3 165 33,069 P/TC 8/4
GD655-3 VHP 190 33,069 P/TC 8/4
GD675-3 180 34,854 P/TC 8/4
GD675-3 VHP 200 34,854 P/TC 8/4
GD825A-2E 280 58,250 P/TC 8/8
LeeBoy
635 47 6,750 H 2/2
685B 110 15,200 H 2/2
785 130 25,300 P 6/3
New Holland
G140 140 29,777 P 8/4
G170 170 32,077 P 8/4
G170 VHP 200 32,077 P 8/4
G200 200 37,950 P 8/4
NorAm
65E Turbo 110 16,800 P/TC 6/3
PSI
M406XT 65 6,850 H 2/2
M413 133 12,650 H 2/2
M413XT 133 13,220 H 2/2
MG618 133 18,590 H 2/2
MG622 133 22,840 H 2/2
Terex
TG110` 132 25,353 P/TC 6/3
TG150 163 31,967 P/TC 6/3
TG190 176 41,226 P/TC 6/3
TG210 229 46,297 P/TC 6/3
Volvo****
G930 195 34,300 P 8/4—11/6
G940 215 35,200 P 8/4—11/6
G946 235 36,700 P 8/4—11/6
G960 235 36,800 P 8/4—11/6
G970 250 39,900 P 8/4—11/6
G976 265 40,500 P 8/4—11/6
G990 265 46,300 P 8/4—11/6


Average List Prices and Hourly Rates HP Range List Price Hourly Rate*
* Hourly rate equals monthly rate divided by 176, plus operating cost. Unit prices include: fuel @ $2.49 per gallon; mechanic’s wage @ $40.18 per hour; and cost of money @ 5.125 percent.

74 & less $63,000 $32.18
75–114 $92,897 $40.58
115–129 $178,622 $50.03
130–144 $185,576 $51.30
145–169 $241,258 $63.20
170–199 $257,245 $69.18
200–249 $299,498 $79.49
250 & more $465,178 $124.83

http://www.constructionequipment.com/article/CA6366005.html?taxid=7858

June 30, 2007

Caterpillar Introduces M-Series Motor Graders, Featuring Joystick Control for Easier, More Efficient Operation

Filed under: Motor Graders

Caterpillar announces the new, seven-model lineup of M-Series Motor Graders. The new machines feature a number of revolutionary concepts in motor grader design-most notably a pair of joysticks replacing as many as 15 levers and a steering wheel. Because of the many control inputs required and the precision work performed by motor graders, they are widely regarded as the most difficult of all earthmoving machines to operate. Caterpillar designed the M-Series joystick control system to make the motor grader easier to learn and less fatiguing.

The M-Series design didn’t stop at the operator station. Caterpillar applied for more than 100 new patents while developing the new motor graders, and the new graders include about 30 percent new content. New features include dynamic styling that opens up lines of sight, easy adjustment of the drawbar, circle and moldboard (DCM), a high torque all-wheel-drive system, enhanced power management and emissions-compliant Cat® C-Series engines with ACERT(TM) Technology.

The M-Series Motor Graders will replace the 10 H-Series models as the new machines are released starting in the fourth quarter of this year and concluding in mid year 2007. The new models include the 120M, 12M, 140M, 160M, 14M, 16M and 24M. The 120M, 140M and 160M will offer an all-wheel-drive option for improved traction in poor underfoot conditions, such as snow, mud and sand, and for added steering and sidedraft control.

Joystick control simplifies work, opens lines of sight
The new M-Series joystick-operated electro-hydraulic control system simplifies motor grader control and reduces operator arm and hand movements by as much as 78 percent. The pair of three-axis joysticks are built for comfort and low-effort operation, and they feature a logical and intuitive control pattern. The system helps operators sustain high levels of efficiency throughout the work day, and the intuitive control design makes training fast and simple-for both new and experienced operators.

The new control system opens up the interior of the cab and provides excellent lines of sight to the DCM and snow wing area. The cab doors are angled and the floor is tapered to provide an unobstructed line of sight to the front tires, the heel and toe of the blade and the DCM. In addition to changes inside the cab, the sloping, tapered engine enclosure opens lines of sight to the ripper. To reduce glare, the M-Series machines have black paint on the top surfaces of the front frame, blade lift cylinders and engine enclosure.

Easier DCM maintenance
Top-accessible drawbar wear inserts and patented, easy-to-adjust, bi-directional moldboard slide rail wear strips make DCM adjustments much faster and more convenient. Shorter service times reduce owning and operating costs.

By removing the access plates located on the top of the drawbar, a mechanic can maintain the circle by adding shims for wear strip adjustment or by replacing the wear strips when they are worn out. Changes to the moldboard retention system and the slide rail wear inserts make moldboard service much easier by eliminating the need for shims. The new bi-directional slide rail shoes allow adjustment up and down as well as fore and aft. The adjustment eliminates moldboard chatter.

High torque all-wheel-drive
The M-Series all-wheel-drive option delivers 42 percent more torque than the H-Series system. The M-Series uses dedicated left and right pumps, which allow independent control of hydraulic flow to each front wheel hydrostatic motor. To compensate for hydraulic power demand, the engine automatically delivers additional horsepower to provide constant net power to the ground.

Through an electronic control module, front wheel speeds can be controlled automatically. The benefit of varying the outside and inside wheel speeds, known as steering compensation, is full torque through an entire turn. In poor underfoot conditions, this system allows a shorter turning radius.

The M-Series all-wheel-drive system also features a new front-wheel only hydrostatic mode for precision low-speed performance. This mode provides infinite front wheel speed control from 0 to 5 miles per hour for enhanced control when working in tight areas, such as cul-de-sacs.

Advanced power management
Variable horsepower (VHP) is now standard on all M-Series models, and Variable Horsepower Plus is optional. The M-Series power management system delivers additional horsepower in 5 horsepower increments as the transmission gear selection increases. The result is a smooth power curve that allows M-Series machines to carry heavy loads while downshifting.

The previous system delivered an extra 20 horsepower in gears 4 through 8, and VHP Plus added another 20 horsepower in gears 7 and 8. Smaller increments throughout the gear range provide predictable power that operators prefer. With more rim pull available in all gears, M-Series machines are more productive than their H-Series predecessors.

New engines and drive train
Cat C-Series engines with ACERT(TM) Technology enable the M-Series motor graders to meet U.S. EPA Tier 3 and EU Stage IIIa emissions regulations. The C-Series engines have been proven in highway truck applications and a wide range of earthmoving equipment. ACERT(TM) Technology enables Cat engines to supply more power per unit of displacement while retaining the reliability and durability that customers expect from Caterpillar.

The M-Series motor graders also have many new drive train features. The new machines have a bolt-on modular rear axle. The new axle module allows the axle and both tandem cases to be dropped down for servicing, which reduces service time.

All M-Series models except the 24M feature a direct-drive countershaft transmission. Electronic Clutch Pressure Control makes gear-to-gear as well as forward/reverse shifts smoother and prolongs the life of all drive train components.

Basic Specifications for M-Series Motor Graders
	
	Operating Weight	Power	        Blade Length
	
120M	29,000 lb (13 150 kg)	125 hp (93 kW)	12 ft 0 in. (3.66 m)
	
12M	31,000 lb (14 060 kg)	145 hp (108 kW)	12 ft 0 in. (3.66 m)
	
140M	32,500 lb (14 740 kg)	165 hp (123 kW)	12 ft 0 in. (3.66 m)
	
160M	35,000 lb (15 870 kg)	195 hp (145 kW)	14 ft 0 in. (4.27 m)
	
14M	44,400 lb (20 240 kg)	230 hp (172 kW)	14 ft 0 in. (4.27 m)
	
16M	55,000 lb (24 950 kg)	285 hp (213 kW)	16 ft 0 in. (4.88 m)
	
24M	145,000 lb (65 770 kg)	500 hp (373 kW)	24 ft 0 in. (7.32 m)
	
http://news.thomasnet.com/fullstory/489983/3281

Volvo Motor Graders utilizes Reform software from FabSoft

Filed under: Motor Graders

Volvo Motor Graders, located in Goderich, Ontario, Canada, a division of Volvo Construction Equipment produces motor graders used in applications throughout the world.  With customers and other Volvo group companies located around the world, it is imperative that we are able to effectively communicate with all of these partners in a timely manner.  The Volvo group’s core values are: Quality, Safety and the Care for the Environment – we will explain how Reform allows us to address two of these three areas.

Volvo Motor Graders uses SAP to manage all aspects of the companies business – from purchasing to account management.  One of the key documents that Volvo Motor Graders uses to communicate with other Volvo group companies and customers is the ‘Customer Account Statement’.  With a mandate of constant improvement,  Reform software was enlisted to improve communications as well as saving time and effort.

In the legacy process of generating and sending out customer statements, an accounting clerk would first print hard copies of the statements generated by SAP. Then the statements were sorted and grouped together by hand to make scanning and sending them easier.  The clerk would then take the sorted statements to a networked photocopier and scan each and every page of every statement and e-mail the resulting PDF file back  to their own e-mail account. After completing  these tasks, the clerk would then return to their desk, review and forward each statement to the appropriate customer via e-mail.  As one could imagine this was a very time consuming and labour intensive process – all in all a costly solution.

Volvo Motor Graders implemented the Reform package to assist in distributing the customers account statement and the process changed dramatically.  Now, an accounting clerk simply has to print the customer statements to a new print queue setup in SAP and their job is finished.  All sorting, processing and e-mailing is handled in the background by Reform, unattended by the user.   Using a conservative estimate, the total process is reduced to 5 to 10 minutes duration from approximately 3 hours using the old process.  Using these numbers, the cost of labour is reduced by more then 90%.

Key benefits to Volvo Motor Graders in this application:

  1. More then 90% savings in the cost of labour.

  2. This frees the accounting clerks time to perform other tasks.
  3. Increase in the consistency of the statements – previously if the pages were  scanned incorrectly or the statements were unintentionally mixed up, the resulting PDF file would not look as professional as it could be. This addresses one of Volvo’s core values – Quality.
  4. The whole process is simplified – with simple instructions, any accounting clerk can now complete the task.  Again, this addresses the core value of Quality.
  5. Reduction in the cost/usage of paper and toner.  This is the second of Volvo’s core values that are addressed – Care for the Environment

http://www.fabsoft.com/products/reform/misc/successes/SAP/volvo.shtml

John Deere 770D Motor Grader

Filed under: Motor Graders

Productivity Innovative Event-Based-Shifting (EBS) automatically senses the load and adjusts clutch pack engagement accordingly for smooth shifts and direction changes without touching the inching pedal. Tier-II certified PowerTech™ Deere diesels deliver best-in-class low-rpm torque. Blade shape, throat clearance, and draft frame geometry enhancements improve material flow across the blade and make on-the-go circle adjustments easier. Available 6-wheel drive models employ a dual-path hydrostatic drive system that delivers exceptional control, responsiveness, and extra power to the ground to move more material. Comfort Redesigned cabs have 26 percent more space and 40 percent more glass, for increased comfort and unsurpassed all-around visibility. At 72 dBa, it provides best-in-class quietness, too. Highly efficient HVAC system moves more air and provides better cooling. Eleven directional vents help keep the cab comfortable and the view clear. Best-in-class lever efforts and PCLS hydraulics ensure consistent response, feel, and precise control in all conditions. Enhanced steering requires 20-percent fewer turns. EBS provides the smoothest shifts in the industry, reducing upper body fatigue and inching pedal use. Available cruise control eliminates the need for a foot-actuated throttle lock. Uptime/Low Daily Operating Costs Super-tough nylon or bronze heavy-duty circle, blade, and draft frame inserts minimize wear and never need greasing. Unlike other graders that require far more effort and expertise, circle wear inserts are quick and easy to replace. Large service doors open wide, and same-side daily service points are conveniently grouped for quick, ground-level access. 500-hour engine oil and filter service intervals let you go longer between changes You won’t find any air tanks to bleed on a Deere grader. Inboard wet-disc brakes are virtually maintenance-free. Advanced diagnostic monitor displays easy-to-understand information to help minimize downtime. http://www.cableprice.co.nz/Equipment/JohnDeere/Graders/770D/index.aspx

June 26, 2007

Governmental - Motor Graders

Filed under: Motor Graders

The motor grader was introduced to the Caterpillar family in 1930. Today, Caterpillar motor graders range from 25,000 lbs to 136,600 lbs with horsepowers from 125 to 500.

The Caterpillar Motor Grader is the market leader in your industry today, and is designed to provide you with unequalled life, maintenance costs, and resale value.

Some of the many uses of the motor grader:
  • Road Maintenance
  • Snow Plowing & Winging
  • V Ditching
  • Ditch Shoulder Clean Up
  • Banking Slopes
  • Windrow Mixing
  • Cul-de-sac Work
Four Wheel Drive
Model Engine Base Power
(all gears) Net
Blade Width
12H C-9 DITA
ATAAC
108 kW
(145 hp)
3.66 m
(12 ft)
14H 3176 DITA ATAAC
Variable HP
164 kW
(220 hp)
4.27 m
(14 ft)
16H 3406 TA 205 kW
(275 hp)
4.88 m
(16 ft)
120H 3116 N/A 3.658 m
(12 ft)
135H 3116 101 kW
(135 hp)
3.658 m
(12 ft)
140H 3176 DITA ATAAC
Variable HP
123 kW
(165 hp)
3.66 m
(12 ft)
160H 3176 DITA ATAAC
Variable HP
134 kW
(180 hp)
4.27 m
(14 ft)


All Wheel Drive
Model Engine Base Power (all gears) Net VHP (gears 1-3) Net
143H 3306 123 kW
(165 hp)
123 kW
(165 hp)
163H 3306 TA 134 kW
(180 hp)
134 kW
(180 hp)


Mining
Model Engine Base Power (all gears) Net VHP (gears 1-3) Net Blade Width
16H 3406 TA 205 kW
(275 hp)
205 kW
(275 hp)
4.88 m
(16 ft)
24H 3412E N/A 373 kW
(500 hp)
7.3 kph
(24 mph)



With Caterpillar Motor Graders you can:
Lower Owning & Operating Costs
  • Durable components provide long machine life
  • Cat engine, transmission and hydraulic system work together for efficient and economic use of fuel
  • Cat lubricating fluids and filters reduce component wear
  • Balanced powertrain and driveline components prolong tire life
  • Cat XT-hose is built for the rigors of motor grader applications
  • Finning can further reduce your costs with Customer Support Agreements, Preventive Maintenance Programs and Scheduled Oil Sampling.
Lower Repair Costs
  • Modular design means components can be removed and installed without affecting other systems
  • Cat Reman parts are available with new part warranties at up to 70% savings over new
Higher Resale Value
  • Proven Caterpillar machine quality has resulted in the highest resale value for used machines. Resale differences of up to 200% are not uncommon

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