The new Gradall XL 3300 V rough-terrain hydraulic excavator, having a standard operating weight of approximately 39,300 pounds, features a 4x4 wheel-mounted undercarriage and is capable, says Gradall, of speeds to 20 mph both on and off pavement. The new model, says the company, can typically work off the front, rear, or either side of the undercarriage without deploying optional outriggers or lowering the optional grading blade. Maximum reach is 27.25 feet at grade, and maximum digging depth is 18.4 feet. A compact counterweight is designed to reduce tail swing.
The XL 3300 V—featuring a four-cylinder, 5.1-liter, 172-horsepower (gross) Tier 4-Final Volvo Penta engine—delivers up to 5 percent improved fuel efficiency, compared with its predecessor model. The engine uses a variable, viscous fan clutch, along with a radiator stacked vertically with the charge-air cooler and hydraulic-oil cooler.
The XL 3300 V uses a load-sensing, axial-piston hydraulic pump, capable of flows to 100 gpm, and three hydraulic motors—swing, tilt, and propel—the latter a variable-displacement, high-torque piston motor that powers a two-speed power-shift transmission. The machine’s ZF axles provide full-time, four-wheel drive and use internal, wet-disc service brakes. A tandem gear pump supplies the steering, brake, and pilot-control circuits. An automatic swing brake is spring applied and hydraulically released.
The cornerstone feature of the XL 3300 V is the triangular-shaped Gradall tilting, telescopic boom, providing a standard 220 or optional 360 degrees of rotation. According to Gradall, the boom delivers full crowd force throughout the digging cycle, and its low profile allows working in low-overhead situations. The machine also uses oscillation-lock cylinders, and although outriggers and grading blade are popular options, says the manufacturer, “they are typically not needed for carrier stability.”
The boom tip incorporates the Gradall Quick Attach Wedge Bolt system that allows using a number of attachments, including excavating, dredging, trenching, and ditching buckets, grading blade, tree limb shear, pavement-removal bucket, single-tooth ripper, fixed-thumb grapple, mower, hydraulic hammers, and crusher. Buckets feature steel-pate construction, high-strength cutting edges, and wear strips. An auxiliary-hydraulic system is available for hydraulically powered attachments and provides flows to 30 gpm and pressures to 4,800 psi.
Cab features include all-electric joystick controllers with an in-cab pattern changer (“Gradall, Deere, or SAE” patterns), tinted safety-glass windows, and acoustical lining. Heating and air-conditioning systems are standard, as is a radio and storable front window. Machine options include ROPS protective cab, vandalism-protection kit (including window covers), strobe light, and block heater.