A commemorative medium-sized dozer created by Caterpillar to mark 175,000 units produced will be put to work in Canada.
The machine is one of three units created to mark the production milestone.
In 1985, Caterpillar expanded its revolutionary elevated sprocket undercarriage concept to its medium track-type tractor line with the launch of the H-Series models.
Still unique to this day for the 130 to 350 hp dozer class, the high drive design conformed to the ground better, improving durability, serviceability and performance compared to low-drive and oval track designs.
The Cat D4H, D5H, D6H and D7H dozer models were the first machines to feature the high drive design. In 1987, the D8L model was added to the family.
Alongside bringing many of the same large dozer advantages to the medium line, the elevated drive sprocket allowed movement of the front and rear track idlers.
This helped to fine-tune machine balance and ground pressure for specific applications more easily than oval track machines.
For the first time, variable pitch angle tilt (VPAT) blades were made available for high drive dozers with the D4H and D5H models for finishing jobs.
Commemorative dozer models
Now, 35 years later, Caterpillar celebrated the success of the elevated sprocket design in the medium dozer class by producing three commemorative machines marking the 175,000th units to be produced. The three dozers rolled off the production line in May.
“One of the original taglines to promote the early high drive tractors was ‘Beyond Known Capabilities,’ because these units set a new standard for efficiency, productivity and ease of operation,” said Wes Holm, chief engineer for Caterpillar medium tractor products. “With our next generation medium dozer line, which includes the new D5, D6 and D7 models, we continue to push these envelopes through adaptation of technology to drive productivity and efficiency to another level.”
With ongoing restrictions resulting from the coronavirus pandemic, Caterpillar cancelled in-person celebrations to mark the historic 175,000-unit milestone for its medium dozers.
However, three customers took possession of the commemorative units, which feature special decals on the fenders denoting the 175,000-unit milestone. The 175,000 image appears inside the cab as well, where it is embroidered on the headrest and printed on a plaque denoting each unit’s limited-edition status.
The first two commemorative units were Cat’s D6 XE electric drive dozers, featuring a dark gray and black paint scheme. The third unit, a D6 dozer with 4-speed, fully automatic transmission, is finished in traditional Cat yellow with special black tracks and blade.
D6 dozer heads to Alberta
The commemorative D6 dozer was shipped to Canadian dealer, Finning Cat, where it was sold to Midwest Pipelines Inc., based in Spruce Grove, Alberta. The legacy of Cat medium track-type tractor ownership dates back 39 years to Midwest’s sister company, Pidherney’s Inc. of Alberta, when founder Merv Pidherney purchased his first dozer, a Cat D6D.
Today, the company’s combined dozer fleet is nearly 100 strong, and the companies remain family owned and operated, specializing in oilfield, civil and hauling projects.
Goodfellow Bros., and long-time Cat customer and fourth-generation, family-owned contractor based in Washington State, received one of the D6 XE units. Before being put in the dirt in Hawaii, Goodfellow plans to feature the new commemorative dozer in the company’s 100th anniversary celebration, planned for 2021.
Holt Cat of San Antonio, Texas, took possession of the second commemorative D6 XE dozer. The Caterpillar-Holt longstanding relationship dates to the company’s origins when Benjamin Holt invented the Caterpillar track-type tractor in 1904.
Cat’s elevated sprocket meets electric drive
The D6 XE dozer design embodies 116 years of continued innovation since Holt’s original Caterpillar. The dealership plans to use it to help promote Cat Next Generation Dozers at future customer events.
Symbolic of the medium dozer line’s long history of innovation, the Cat D6 XE is the world’s first electric drive dozer to offer the elevated sprocket design. It boasts a strong, yet light, structure, providing optimum machine balance for grading without the need for a rear implement or counterweight.
Integrated Cat GRADE technologies, such as standard Slope Assist and available Cat GRADE with 3D, help to increase overall jobsite productivity by up to 50 per cent. Offering up to 35 per cent improved fuel efficiency, the dozer features a durable design with updated components, long service intervals and extended scheduled maintenance to reduce service and maintenance costs by up to 12 per cent.
The Cat D6 and D6 XE dozers are manufactured exclusively in East Peoria, Illinois, and Grenoble, France, along with other models in the medium dozer line. In addition, Caterpillar manufactures Cat medium dozers in Piracicaba, Brazil and Rayong, Thailand, to meet global market needs.