The DL550B: Case’s compact dozer loader concept is now a reality


Case has debuted the all-new DL550B — the industry’s first fully integrated compact dozer loader.

The DL550B was originally introduced at ConExpo 2017 as a concept machine named “Project Minotaur.”

The machine leverages the footprint of a compact track loader (CTL) with the chassis-integrated C-frame and blade of a dozer to create a powerful two-in-one machine for grading and loading applications.

“Our goal with this concept was to see it through all the way,” said George MacIntyre, product manager for compact equipment at Case.

“The DL550B is here today as the result of the passion and drive of our engineering, product validation and manufacturing personnel, the real-world operators who spent hundreds of hours running prototypes around the country, as well as the enthusiasm shown by the construction industry in providing feedback to how this machine should perform in the field.”

The DL550B features a dozer-style undercarriage for optimal dozing performance and is available with either steel or rubber track configurations to provide contractors with flexibility based on the types of jobs they tackle.

It also features Case Universal Machine Control, which allows the machine to be outfitted straight from the dealer with any of the three major suppliers of grade/machine control technologies. As well, the DL550B is compatible with Case SiteControl CoPilot, which provides a mastless machine control experience with basic control of slope/grade.  

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The machine weighs about 8,165 kg and operates at 114 horsepower. It is also available with an optional fully integrated ripper and is compatible with a wide range of heavy-duty attachments that make it suitable for everything from initial site clearing to finish grading.    

CASE dealers will begin taking orders for the DL550B in the fourth quarter of 2020 with units arriving in 2021.

Dozer design

The DL550B features a six-way blade and a C-frame that attaches directly into the chassis and primary coupler of the machine.

The design provides the stability and smooth operating plane of a small dozer and ensures that all operating power and stress is channeled through the chassis instead of the attachment coupler and arms of the machine, unlike a basic dozer blade attachment on a compact track loader.

“A standard CTL with a dozer blade attachment can be effective for occasional work, but that combination doesn’t provide true six-way blade performance, or the long-term precision possible with the DL550B,” MacIntyre said.

“This design is much better for strength and reliability as the pushing power is channeled through the entire machine. We have also integrated dozer controls for a much more intuitive experience for the operator versus the complicated control arrangement that comes with a common attachment blade.”

CTL-style operation

To transition to CTL-style operation, the operator hydraulically detaches the C-frame and blade to match up with an attachment that’s available for skid steers and CTLs. The machine comes standard with a 1 cubic metre bucket, available with either a cutting edge or SmartFit teeth system.  

The DL550B does include some changes compared to the original concept unveiled at ConExpo 2017.

The machine now includes an evolution from radial to a vertical lift geometry and an increase in rated operating capacity from 2,041 kg up to 2,500 kg (at 50 per cent tipping load).

“We found that the vertical lift pattern helped us achieve both the dozing performance we were looking for while also expanding its ability to serve as a high-capacity CTL,” MacIntyre said.

“The vertical lift pattern allows us to reach deeper into trucks, and additional enhancements in machine structure and performance allowed us to increase the rated operating capacity by 1,000 pounds, making the DL550B one of the most powerful and versatile machines ever built within this footprint.”

The DL550B also offers auxiliary hydraulic options that exceed any of the CTLs in the current Case lineup — up to 150 litres per minute at 4,100 psi — which matches well with high-speed attachments such as mulchers and grinders for heavy duty land clearing and site development work.  

“We envision the DL550B as the next great two-in-one machine that will help simplify fleet management and expand service offerings for its owners,” MacIntyre said. “From landscapers to residential contractors, smaller businesses that have thought about buying a small-frame dozer to expand will now get comparable performance out of a machine that also doubles as a CTL — a machine platform that they are likely already operating.”

The DL550B operator experience

The DL550B features electro-hydraulic dozer joysticks that also operate similar to ISO controls in skid steers and CTLs — changing from dozer to CTL operating function is as simple as the push of a button.

Steering, as well as forward and reverse travel, is controlled with the left hand while boom and bucket controls are manipulated by the right hand when operating in CTL mode. Those same right-hand controls operate the lift, angle and tilt functions of the six-way blade when in dozer mode.

Popular Case dozer features such as blade shake, as well as manual pitch adjustment, are also incorporated.  

The machine is compatible with a full complement of 2D and 3D machine control solutions to further transform it into a precise grading platform, from sub-base up to finish grade — especially on smaller yards or jobsites where larger dozers or graders may not be able to gain access.

The machine also includes the all-new operator interface enhancements recently introduced with the Case B Series skid steers and CTLs, including a 20-cm LCD multifunction display that serves as its control centre.

It features an integrated backup camera, core machine settings, trip meters, service interval information and machine operating status details similar to an automotive dashboard. The DL550B is also available with Case SiteWatch telematics to further streamline fleet management and planned maintenance activities.