![]() While hauling loads of shale overburden in Barnsley, England, with British contractors, dealers and government officials standing by, the machine completed a 500-yard cycle in less than 12 minutes, mastering a 1 in 8 gradient. The two-wheeled version is essentially the machine they sell today.ĭuring development, the DW21 was tested at high speeds. Although it stayed in Caterpillar’s product lineup for many years, the DW20 was phased out, succumbing to the popularity of the DW21. A four-wheeled version – the DW20 – was also offered. The DW21 was a single axle, two-wheeled machine, as opposed to the conventional four-wheel design. The rubber-tired, self-propelled scraper was the result of five years of intensive research and offered heavy construction contractors a complete equipment package to meet needs in each zone of operations. The Caterpillar machine, unveiled at CONEXPO in Chicago in 1948, didn’t become available until September 1950. Caterpillar DW21 wheel tractor-scraper working on the St. It was Caterpillar’s answer to the LeTourneau “Tournapull,” the first-of-its-kind self-propelled scraper made in Peoria, Illinois, by former Caterpillar supplier, Robert LeTourneau. “The minimal difference between the clamping pressure of a traditional third-function loader grapple and the clamping pressure of the bucket cylinders ensures operators can clamp material and move it to where it’s needed to be.” The MG20F is compatible with John Deere 120R, 220R, and 300E loaders and is ideal for debris cleanup, brush removal, and for moving logs and rocks.The first Caterpillar wheel tractor-scraper, called the Caterpillar DW21, was manufactured for heavy construction contractors. ![]() “Similar to a standard loader bucket, the MG20F can be quickly attached to the tractor’s loader and utilizes the same quick-attach system common to the John Deere 120R, 220R, and the 300E Loaders that greatly reduces installation time when changing loader attachments,” Doyle said. Teeth on the upper and lower jaw tines are designed to prevent material rollout and help grab, remove or keep material in place once clamped. Once attached, the grapple utilizes the loader’s bucket cylinders to open and close its jaws and to keep loads intact while moving. The MG20F does not require third-function loader hydraulics to work and saves customers hundreds of dollars on extra parts and several hours of installation time. The MC20210 is an ideal material collection system for customers who use mid-mount mowers. With a dump height of 53 inches or higher (depending on the model) from the ground, the grapple features dump angles and ultra-wide grapple openings for maximum material removal and easy material release. The other addition to the Frontier lineup is the MG20F, a loader-attached mechanical grapple. An optional audible fill sensor also can be ordered and provides increased productivity by sounding an audible alarm once the hopper is full, allowing the operator to focus on what’s happening in front of the machine, while they mow. The MC2014 and MC2120 come factory equipped with a hopper-fill site glass so operators can keep a watchful eye on the fill level of the hopper while working. The hopper can be easily dumped from the seat of the tractor with the flip of a switch, helping operators be more productive and experience less fatigue while working.” Frontier MG20F Mechanical Grapple offers a quick attach solution for fast installation and features a 1,200-pound lift capacity. “Its onboard blower system, and integrated storage stands, provide the power and ease customers are looking for with these systems. It’s iMatch quick-hitch compatible and easy to install and remove,”ĭoyle said. “The MC20210 is the ultimate material collection system for customers who use mid-mount mowers. The MC20210 hopper can be easily dumped from the seat of the tractor with the flip of a switch.Īccording to John Doyle, partnered products marketing manager for John Deere, these new products offer ideal solutions for large property owners who need to quickly move tree limbs, rocks, or brush, or who need to efficiently remove grass clippings, leaves, or pine needles from their property. The new Frontier MG20F Mechanical Grapple is compatible with John Deere 120R, 220R, and 300E Loaders. ![]() The new PTO-driven Frontier MC2014 and MC2120 Material Collection Systems offer 14- and 20-bushel capacity respectively for John Deere 1, 2SC, 2LC, and 3R Compact Utility Tractors. John Deere has added new material collection systems and a mechanical grapple to its popular line of Frontier equipment. ![]()
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