Tag Archive for 'excavators'

Attachment Q & A

New Cat® Wheel Material Handlers Are Application-Specific Design

Cat MH3024 WMH

The new range of Cat® wheel material handlers (MH3022, MH3024, MH3026) maintains the Caterpillar purpose-built philosophy for these machines while reflecting engineering refinements that tailor them more precisely to specific industrial applications. Further improvements for these 2018 models include features that support rapid return-on-investment and enhance overall performance, versatility, and safety.

The design of the new material handlers is focused on application efficiency and reduced owning costs. For example, users need not buy a machine with a wide undercarriage if materials being handled are low density, and shorter front linkages are available if the machine frequently works in confined spaces.

The MH3022, for instance, is an agile solution for handling jobs with space constraints, providing the necessary reach for tasks such as indoor sorting and waste-handling, yet providing application flexibility with a choice of two MH booms, three straight sticks with linkage, and two drop–nose sticks. The compact undercarriage is wide enough for excellent stability, while the centered position of the swing bearing allows equal capabilities when working over the front and rear.

If space-constraints are not an issue, the MH3024 is ideal for such tasks as waste handling, recycling, and bulk-material handling. The MH3024 features optimum reach with its long MH front linkage, and a choice of undercarriage configurations to meet all customer application needs. If the application is not stability-sensitive, then the new 2.75-m (9-ft.) undercarriage might be a perfect fit for the MH3024 working in typical conditions, as well as good fit for the MH3026 handling low-density materials. In either instance, the machine’s footprint is adequate to ensure stability in normal operation, and, again, lifting capacities over the rear are increased by the symmetric position of the swing bearing

If work requires greater lifting capacities and a larger working envelope, then the MH3026 is the optimum machine, equipped with a long MH boom and providing a choice of three drop-nosesticks—ranging in length from 4.9 to 5.9 m (16.1 to 19.3 ft.), three straight sticks—and a choice of three undercarriage sizes.

The flexible design of the new material handlers also contributes to ease of transporting these machines—a sure way to better control costs. Two drop-nose sticks for the MH3022 and MH3026

Cat MH3024 at Galva Steel & Iron, Galva, IL

are now available, having lengths of 4.5 m (14.75 ft.) and 5.5 m (18.1 ft.). The new sticks can be an efficient solution when moving a machine between job sites is a frequent occurrence, allowing transport without removing the stick. Sticks are designed to keep transport heights below the critical 4-m (13.1-ft.) dimension for significant time/cost savings.

Another noticeable addition to the new models is the front push blade, now available for all undercarriage types. These blades provide an easy way to clear the working area and push materials commonly encountered in waste and mill-yard applications. Working on surfaces free of debris can further extend tire life, resulting in greater operational efficiency.

Operational efficiency gets a further boost with redesigned, optimized, Cat orange-peel grapples. Designed to be an exact match between tool and machine, the new grapples can contribute to decreased fuel consumption—by as much as 15 percent in some applications. The grapples feature reduced weight for shorter cycle times and increased productivity. Additional cost savings are available through the increased durability of the grapples, which have castings in place of welded structures in high-stress areas.

Operator health and safety are primary design goals for the new material handlers. To that end, an Advanced Cab Filtration system, available as an integrated option from the factory, is recommended when machines work in dusty, contaminated environments, especially indoors. The system almost completely eliminates dust and contaminants (insecticides, spores, fungi, bacteria, or vapors—for example) from entering the cab. In addition, the system eliminates the need to add cumbersome after-market filtration systems to the machine. Also, an Easy Cab Access option, which installs steps on the front and rear of the undercarriage, facilitates cab ingress/egress when the upper frame is not aligned with the chassis.

Cat MH3024 at Galva Steel & Iron, Galva, IL

Specifications

  MH3022 MH3024 MH3026
Engine Cat C7.1 ACERT™–meets U.S. EPA Tier 4 Final/EU Stage IV

emission standards.

Net power ISO 9249 171 hp (126 kW) – 171 PS
Operating weight 21 815 – 22 930 kg
48,094 – 50,552 lb.
22 950 – 24 165 kg
50,596 – 53,242 lb.
25 220 – 26 150 kg
55,601 – 57,651 lb.
Reach, max. (stick pin) with MH boom 11 005 mm (36’1”) with drop-nose stick
4 900 mm (16’1”)
12 845mm (40’11”) with drop-nose stick
5 900 mm (19’4”)
Height, max. (stick pin) with MH boom 12 065 mm (39’0”) with drop-nose stick
4 900 mm (16’1”)
13 300 mm (43’8”) with drop-nose stick
5 900 mm (19’4”)
Speed, max. 25 km/h (16 mph)

 

Three Next Generation Cat® Excavators Deliver More Choices for Increased Efficiency and Lower Operating Costs in 20-Ton Size Class

Cat 320 HEX digging foundations

Three Next Generation 20-ton size class excavators from Caterpillar—the 320 GC, 320 and 323—increase operating efficiency, lower fuel and maintenance costs, and improve operator comfort compared to previous models. The new excavators offer unique combinations of purpose-built features designed to match customers’ productivity and cost targets.

Still the 20-ton class standard, the new Cat® 320 raises the bar for efficiency with integrated Cat Connect Technology that advances productivity gains. Standard technology combined with lower fuel and maintenance costs deliver low-cost production in medium- to heavy-duty applications.

Designed for low- to medium-duty applications, the new Cat 320 GC combines the right balance of productivity features with reduced fuel consumption and maintenance costs. The result is high reliability and low cost-per-hour performance.

Cat 320GC HEX working

Delivering high production performance, the new premium Cat 323 boasts standard integrated Cat Connect Technology and the most power and lift capacity in the line. These features combine with lower fuel consumption and reduced maintenance costs to deliver maximum productivity at the lowest cost.

Technology boosts efficiency by up to 45 percent                            

The new Cat 320 and 323 boast the industry’s highest level of standard factory-equipped technology to boost productivity. Both models are equipped with integrated Cat Connect Technology, which increases operating efficiency by up to 45 percent over traditional grading operations.

Offering guidance for depth, slope and horizontal distance to grade, the Cat Grade with 2D system helps operators reach the desired grade quickly and accurately. Using the system’s E-fence feature enables the machine to work safely under structures or near traffic by preventing any part of the excavator from moving outside operator-defined set points. The standard 2D system can be upgraded to Cat Grade with Advanced 2D or Cat Grade with 3D.

Standard Grade Assist automates boom, stick and bucket movements, so operators stay on grade simply and effortlessly with single-lever digging. Cat Payload on-board weighing, integrated on the Cat 320 and 323 at the factory, delivers precise load targets and increased loading efficiency with on-the-go weighing and real-time payload estimates without swinging to prevent truck over/under-loading. Cat LINK™ hardware and software connect job sites to the office and provide customers with machine-critical operating information.

Fuel savings reaching 25 percent
Durable Cat engines provide duty-matched power ratings from 121 to 162 hp (90 to 121 kW) for the three new excavators. The efficient Next Generation machines consume 20 to 25 percent less fuel than the previous, corresponding models. New Smart mode operation automatically matches engine and hydraulic power to digging conditions, optimizing both fuel consumption and performance. Engine speed is automatically lowered when there is no hydraulic demand to further reduce fuel usage.

Cat 323 HEX working

More efficient than single-fan systems, the new cooling system employs multiple electric fans, which independently monitor hydraulic oil, radiator and air-to-air aftercooler temperatures to deliver the exact airflow required. With a new hydraulic system built for responsiveness and efficiency, the Cat 320 GC, 320 and 323 feature a new main control valve that eliminates the need for pilot lines, reduces pressure losses and lowers fuel consumption. Fewer hydraulic lines on the excavators result in 20 percent less oil required, lowering long-term operating costs.

Maintenance costs reduced as much as 15 percent

Offering extended and more synchronized maintenance intervals, the new Cat excavators do more work at a lower cost and reduce maintenance costs by up to 15 percent over the previous series. Featuring higher dirt capacity, the new Cat hydraulic return filter boasts a 3,000-hour service life, a 50 percent increase over previous filters. A new Cat air filter with integrated pre-cleaner and primary and secondary filters extends service life to 1,000 hours, a 100 percent increase over previous designs, while a new fuel tank cap filter extends service life to 2,000 hours. The three fuel system filters each offer a 500-hour service interval.

All daily maintenance checks for engine oil, fuel water separator, fuel tank water and sediment, and cooling system level are performed from ground level, making the routine faster, easier and safer. Consolidated filter locations reduce service time. 

New cab designed to enhance operator performance

Cat 323 HEX setting pipe

All Next Generation Cat Excavator cabs come equipped with standard features like keyless push-button start, large standard 8” (203-mm) touchscreen monitor with jog dial keys for control and sound-suppressed rollover protective structures (ROPS) to offer the next level of operator comfort, safety, and quiet operation. Programmable joystick buttons for response and pattern allow the operator to dial in productivity settings. New advanced viscous mounts reduce cab vibration by up to 50 percent over previous models to reduce operator fatigue.

Equipped with a choice of Comfort, Deluxe or Premium cab packages, the new spacious cab features a low-profile design and large front, rear and side windows to enhance visibility to the front and side of the excavator. Optional 360-degree visibility combines images from multiple machine-mounted cameras to enhance the operator’s sight-lines in all directions. Automatic climate control maintains internal cab temperature settings, regardless of external ambient temperatures. A Bluetooth® integrated radio with USB ports for connecting and charging phones bring creature comforts from the home to the operator’s office. A tilt-up console for the Deluxe and Premium cab designs affords easy cab entry and exit.

For more information about Cat Next Generation Hydraulic Excavators, contact the local Cat dealer or go to www.cat.com

 

Cat 320, 320GC, 323 HEX

Next Generation Cat Excavators Product Specifications

                                          320 GC 320 323
Engine Cat C4.4 ACERT™ Cat C4.4 ACERT™ Cat C7.1 ACERT™
Gross Power (ISO 14396) 121 hp (90 kW) 162 hp (121 kW) 162 hp (121 kW)
Operating weight 48,300 lb
(21 900 kg)
50,100 lb
(22 700 kg)
56,200 lb
(25 500 kg)
Max. digging depth,
{18’ 8” (5.7 m) boom,
9’ 6” (2.9 m) stick}
22’ 1” (6 720 mm) 22’ 1” (6 720 mm) 22’ 1” (6 720 mm)
Max. reach at ground level
{18’ 8” (5.7 m) boom,
9’ 6” (2.9 m) stick}
32’ 4” (9 860 mm) 32’ 4” (9 860 mm) 32’ 5” (9 870 mm)
Max. loading height
{18’ 8” (5.7 m) boom,
9’ 6” (2.9 m) stick}
21’ 4” (6 490 mm) 21’ 4” (6 490 mm) 21’ 3” (6 480 mm)

Vacuworx Vacuum Lifting Technology Lands on White House Steps

Vacuum Lifting Technology Lands on White House Steps

National Park Service cites safety and versatility among major considerations when deciding on concrete lifting system manufactured by Tulsa-based Vacuworx to handle recent renovation of South Portico stairways at the White House.

Vacuworx MC 5 with custom pad assembly shown in front of White House South Portico steps.

Vacuum lifting technology has made its way to the White House as part of the National Park Service’s historic renovation of the building’s South Portico steps. The $1 million project, which included dismantling Truman-era staircases and installing carefully selected cuts of Missouri limestone, was completed between August 5 and August 30, 2017.

Jessica Gordon, an exhibits specialist with NPS’ Historic Preservation Training Center (HPTC), said a material handling solution that incorporated a Vacuworx MC Series Vacuum Lifting System proved advantageous as crews pulled two base stones weighing approximately 2,400 lb. each, and set a total of 46 new slabs. Each new South Portico step – there are 21 located on the east and 21 on the west – are approximately 10 in. long, 7 in. deep and 20 in. wide. The four new landing stones are 11 ft. long, 7 in. thick and 6 ft. wide. Gordon worked directly with Vacuworx to rent an MC 5 lifter and three custom pad assemblies. The carrier equipment was rented from Extreme Steel & Rigging, based in Warrenton, Virginia.

The MC 5 operates using a self-contained diesel engine. When activated, the system pulls a vacuum between the pad and object to be lifted, providing a powerful positive seal. Eliminating the need for straps, Gordon noted, saved crews nearly 8 hours as she estimates that method would have required an additional 10 minutes per limestone step during the installation process. The application of vacuum lifting also mitigated the risk of chipping the top-grade material by prying on it with a bucket or fork, she said and curbed the possibility of damaging an adjacent patio on the South Lawn.

“We’re moving, fitting, lifting, spreading the mud and laying it down,” Gordon said. “All the re-handling; it adds up. With the remote operation, we can safely pick up and maneuver materials

Using vacuum lifting technology during recent White House renovations is estimated to have saved crews nearly 8 hours and mitigated the risk of damage to materials.

without compressors, hoses or other accessories presenting trip hazards. What really sold us is that everything is self-contained, in one unit.”

The timing of the South Portico project overlapped a remodel of 1600 Pennsylvania Avenue that was facilitated by NPS and the General Services Administration. The $3.4 million project was completed in August and included the replacement a 27-year-old HVAC system along with renovations of the Navy Mess kitchen, West Wing lower lobby, and IT system. According to the White House, these renovation plans had been approved by the previous administration.

The NPS’ Frederick, Maryland-based Historic Preservation Training Center focuses on maintaining and preserving icons of historical and cultural significance throughout the United States. Gordon said that the agency handles about 35 to 40 projects a year, among its three divisions: Masonry, Woodcrafting and Carpentry. The scope of its masonry work includes 10 to 15 jobs a year, she said, with the typical project cost ranging between an estimated $50,000 and $400,000. According to Gordon, “Our work is project-based, so the rental option works well for us. Versatility is a major consideration.” Vacuworx Vacuum Lifting Systems were also used by NPS to help rehabilitate the steps that guide visitors to a memorial building at Abraham Lincoln Birthplace National Historical Park in Hodgenville, Kentucky.

The upper part of the steps on the west side of the South Portico being removed by workmen—January 10, 1950.

The South Portico was originally constructed during the Monroe administration in 1824. New steps, constructed of Missouri limestone with a concrete base,

New steps of the South Portico being erected during a White House Renovation—January 4, 1952.

were erected in 1952, during the presidency of Harry S. Truman. Springfield-based Phenix Marble Co. quarried the newly installed limestone. “The NPS has been handling maintenance projects at the White House since 2001,” Gordon said. “It’s enjoyable to be part of making history.”

About Vacuworx

Founded in 1999 in Tulsa, Oklahoma, Vacuworx engineers and manufactures innovative heavy-duty material handling equipment for the oil and gas, water and sewer, highway and heavy construction, concrete construction, landscaping, and manufacturing industries worldwide. Vacuworx Vacuum and Hydraulic Lifting Systems can be customized for many applications and lift capacities. Standard models lift a variety of materials including steel pipe (including most types of coating), plastic pipe (PVC, fiberglass, long flexible pipe), ductile iron pipe, concrete pipe, pre-cast concrete slabs, pre-cast concrete culverts, concrete road barriers, saw cut concrete (demolition or rehabilitation), landscape pavers, steel plate and piling and road plate. Lifters can be attached to hydraulic excavators and backhoes (with or without a coupler system), wheel or track type loaders, cranes, pipe layers, skid steers, forklifts and knuckle booms and can also be mounted on a variety of in-plant applications. Vacuworx maintains a global inventory available for purchase or rental. Parts, service and technical support are available 24/7/365 for installation, training, repairs, and troubleshooting.

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