Customers can expect to see the new Doosan DD100 dozers in North America as machines complete production and arrive at dealerships in the coming months.

Small and Powerful

Doosan entered the North American dozer market with a smaller dozer size, competing in the 140-hp and under category. The new DD100 dozer is at the top of its class for operating weight and horsepower, according to a press release. Ideal for light commercial construction, the dozer’s main task is fine grading.

Setting the DD100 dozer apart from other manufacturers in the under 140-hp size class is the machine’s power-to-weight ratio. This design was intentional; Doosan planned to make a machine that can offer more power to the ground and superior tractive effort compared to its competitors.

Productivity is driven by the dozer’s 6-way variable angle pitch blade. Customers can choose from two blade options: a standard 2.9 cubic yard blade or an optional 3.4 cubic yard capacity blade. The blade moves freely to lift, tilt and angle, and offers two-way mechanical adjustments to change the blade pitch to control how steeply the blade will dig into the ground. Operators can adjust the blade pitch from 54 to 58 degrees. A blade shake button is also available for operators to quickly remove materials stuck to the blade.

Technology Allows for Precision

A 2D grading system option is available to make precision grading easier, even for novice operators. For further grading accuracy, Doosan offers a 3D machine guidance and machine control option in partnership with Trimble. The 3D system requires the installation of a second monitor in the cab and uses GPS technology for greater grading accuracy and ease of operation.

Electrohydraulic control is standard, making the DD100 dozer easier to operate. Operators can customize the controls to their individual preferences. More experienced operators can adjust the machine for finer control if desired.

The DoosanCONNECT Telematics system is a standard feature on the Doosan dozer, making it easy for customers to remotely monitor and maintain their machine. They can monitor the health, location and productivity of the dozer from a user-friendly mobile app and website. The customer’s dealer can also see the equipment status and notify them when it’s time for service to minimize machine downtime.

The front engine compartment of the Doosan DD100 dozer offers a narrower design than other dozers to make it easier for operators to see their work. The precleaner is tucked away in the engine compartment to maximize front visibility. The electronic cooling system was moved to the back of the dozer to further improve front visibility. The cab’s low-profile front pillars provide maximum glass area, and all-glass doors provide a full view of the working environment.

“Visibility is the name of the game,” Ray Trainor, co-owner of Ratoskey & Trainor, said. Trainor and his business partner, Rob Ratoskey, were the first to take possession of a Doosan dozer in North America. “In smaller machines, when you’re doing roadways and putting stone on grade, you’ve got to see what you’re doing, and the visibility in the Doosan dozer is good."

Fuel Efficiency

The Doosan DD100 dozer is powered by a 3.4-liter D34 diesel engine and does not require the use of a diesel particulate filter (DPF) to meet current emissions standards. The same engine has been used in other Doosan machines and has performed well. Operators can select the dozer’s ECO mode to reduce daily fuel consumption up to 5% without sacrificing grading performance. This fuel-saving feature lowers the pump power output when working in lower tractive conditions.

Additional fuel-saving features include auto idle and auto engine shutdown. If the machine functions are not used for a predetermined period, the auto idle feature idles the dozer engine to reduce fuel consumption. When the operator moves the controls, the dozer automatically returns to the previous throttle setting.

The auto shutdown feature saves fuel and helps lower warranty hours. When the feature is enabled, the engine shuts down after it has been idling for a specified period. Default shutdown occurs after five minutes of idling but can be set for longer periods by the operator using the Smart Touch display.

Durability

Doosan developed its dozer undercarriage system to help lower the total cost of operation. The design includes both single- and dual-flange rollers for improved durability and long life.

Customers can choose from several track guards to enhance uptime protection. They include general-purpose and full guard options to fit the jobsite conditions. In addition, track shoe options are available to help distribute the load to the ground. Thinner tracks are used for rugged, rocky environments. A low-ground pressure option is available for sandy soil conditions.

By the Numbers

• Horsepower (gross): 122 hp (91 kW)

• Horsepower (gross): 122 hp (91 kW)

• Operating weight: 22,300 – 24,900 lb. (10.1 – 11.3 metric tons)

• Blade capacity: 2.9 – 3.4 cu. yd. (2.2 – 2.6 m3)

• Blade height: 3 ft. 7 in. (1.1 m)

• Blade width: 8 ft. 11 in. – 10 ft. 6 in. (2.7 – 3.2 m)

• Blade angle: 23 degrees

• Drawbar pull: 35,300 lbf. (16 ton-force)

• Tumbler distance**: 7 ft. 7 in. (2.3 m)

• Travel speed, max: 5.6 mph (9 km/hr)

• Dozer cabin is ROPS/FOPS certified

Looking ahead to 2023, Doosan plans to offer a larger model — the DD130 — in North America. The 13-metric-ton model is expected to launch early in 2023.