For example, the D9N replaced the D8L, the D10N replaced the D9L and the D11N replaced the D10. With the introduction of the N-Series tractors in 1986-87 their model numbers were pushed up. The D10 had sales of their Fiat-Allis/ Komatsu competitive sized bulldozers combined. Between 19 nearly 1,000 D10s were made at Caterpillar's East Peoria plant. The D10 was introduced at a dealer meeting by Caterpillar in the fall of 1977. In March 1977, prototypes P-1 through P-10 would appear and be subsequently dispatched to different job sites. The first pilot D10 was D10X1 and was shown in July 1973 at a big Caterpillar corporate meeting. In 1976 Japanese company Komatsu came out with an even larger bulldozer called the D455A at 620 hp (460 kW) and 167,000 lb (76,000 kg). For example, the Fiat-Allis 41-B track-type tractor had 524 hp (391 kW) at the time, while the D9H had 410 hp (310 kW). In 1974 after AC and Fiat merged their construction equipment divisions the 524 hp (391 kW) 41-B was introduced. Allis Chalmers introduced at Conexpo 69 in Chicago a 524 hp (391 kW) HD-41 which was the largest crawler in the world. At this time, competitors were building bulldozers that were more powerful than the D9. The Caterpillar D10 was the result of a need for a tractor larger than the Caterpillar D9. It was the first modern tractor to use the elevated drive sprocket to improve durability, operator comfort, and ease of maintenance. (then called the Caterpillar Tractor Company). The Caterpillar D10 is a track-type tractor manufactured by Caterpillar Inc. JSTOR ( January 2021) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. Instead we offer this photo to explain the principles involved.This article needs additional citations for verification. Resilient pads or some other form of cushioning material absorbs shock loads when the blade comes in contact with the tractor to be pushed. The dozer moldboard is hinge-mounted to a special inside push beam. They are always part of a special dozer group which is made predominantly for pushing other Dozers and Self Loading Scrapers when a more tractive effort is required. U-Blades are able to Tilt when equipped with one Tilt Cylinder and Tilt and Tip when equipped with two.Ĭushion Dozers are not available as a moldboard only. They are not well suited to handling large angular objects such as blast rock. They are best suited for loose loads coal, woodchips, and overburden, which are evenly distributed across the face of the moldboard. These blades are designed to push large quantities of granular materials over long distances. Semi-U Blades are able to Tilt when equipped with one Tilt Cylinder and Tilt and Tip when equipped with two. Semi-U Blades can be built with good abrasion resistance for materials like gravel, and with puncture resistance for handling large angular pieces of rock. Straight Dozers are able to Tilt when equipped with one Tilt Cylinder and Tilt and Tip when equipped with two.īuilt much like a Straight Blade but with a deeper profile and closed ends to help keep granular materials in front for long pushes. They are not well suited to handling granular materials since these materials spill off the ends during long pushes. Straight Blades can be made very strong, abrasion-resistant, and puncture-resistant for moving large, sharp, and abrasive objects. This is a good all-purpose blade, especially when equipped with Tilt Cylinders. Ideal for making windrows, digging drainage ditches, backfilling trenches grading roads. The moldboard pivots about its center point to cast materials left or right. Angle Dozers work best handling broken and granular materials, soils, and gravel.
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