SCHMIDT SEEGER/ BÜHLER 407/7 MOTOR GRADERS

Technical Description

The 2007 Schmidt Seeger/Bühler 407/7 is a heavy-duty motor grader engineered for precision earthmoving and road maintenance applications. This machine features a base weight of 33,250 lb, increasing to 34,839 lb when fully equipped, with rear axle loading of 24,357 lb providing substantial traction and stability. The grader is powered by an engine delivering 139–180 hp (104–134 kW) depending on operating conditions and gear selection, coupled with an 8-forward/6-reverse transmission for versatile operational flexibility. The moldboard assembly demonstrates exceptional control capabilities, including blade lift up to 18.9 inches above ground and maximum cutting depth of 28.9 inches. Lateral positioning is achieved through side shifting of up to 26.1 inches left and 20.2 inches right, while blade angle adjustment reaches 40 degrees forward and 5 degrees backward for varied grading operations. The machine generates substantial pulling force, with blade pull advantage ranging from 33,395 lb at typically equipped weight to 39,683 lb at maximum GVW, and corresponding down force advantage between 17,912 lb and 23,878 lb. Tandem oscillation capabilities of 15 degrees front and 22 degrees rear enhance terrain adaptability. The fuel tank holds approximately 15.8 gallons, supporting extended operational periods. Hydraulic systems operate at approximately 3,500 psi with flow rates around 40 gallons per minute, delivering reliable actuation across all blade control functions. This configuration makes the 407/7 suitable for highway construction, maintenance, and similar demanding grading requirements.