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This blade design was introduced by Komatsu on their D575 A-2 dozers in 1995 as the Superdozer version. The deeper curvature of the Carrydozer/Superdozer blades literally carry the dirt moved, and the weight of the load increases pressure on the undercarriage and is thereby increasing the traction of the bulldozer.
The dozer blade usually has three variants: A straight blade ("S-blade") is short and has no lateral curve, with no side wings, and can be used for fine grading. A universal blade ("U-blade") is tall and very curved, and has large side wings to carry more material. A "S-U" combination blade is shorter, has less curvature, and has smaller side ...
A Caterpillar D6R with Power Angle Tilt blade The D6 4R/5R was replaced by the D6 8U & 9U series, fitted with the 6-cylinder D318 engine of 66 hp (49 kW) in 1947. In 1959 the D6 was replaced with the D6B after 60,000 D6 4R/5R and 8U/9U tractors had been built.
The Caterpillar D7 is a medium track-type tractor manufactured by Caterpillar Inc. and most commonly used as a bulldozer. The D7 was first manufactured in 1938. A series of improved models were later produced, including the D7C in 1955, the D7D in 1959, the 160 hp (120 kW) D7E in 1961, the 180 hp (130 kW) D7F in 1969 and the 200 hp (150 kW) D7G ...
The Cat D10 could be ordered with up to a 19-foot (5.8 m) U-blade, and weighed in at 180,000 lb (82,000 kg). Later versions weighed in at 190,000 lb (86,000 kg). The U-blade was 7 feet (2.1 m) high and could push 35 cu yd (27 m 3) according to Caterpillar's literature. The November 1977 issue of Excavating Contractor magazine had a 2-page story ...
The Caterpillar D8 is a medium track-type tractor designed and manufactured by Caterpillar. Though it comes in many configurations, it is usually sold as a bulldozer equipped with a detachable large blade and a rear ripper attachment.