John Deere is adding four models to the K-Series crawler dozer line. The 550K, 650K, 700K and 750K crawler dozers build off 850K that launched in 2011. A John Deere PowerTech 6.8-L (700K, 750K) or 4.5-L (550K, 650K) Tier 4 Interim diesel engine provides an increase in horsepower from the previous J-Series, along with increases in overall tractor weight. The horsepower ranges include: 85 horsepower (550K), 101 horsepower (650K), 125 horsepower (700K), and 155 to 165 horsepower (750K) at 1,800 rpm. The John Deere Tier 4 Interim engine also offers operation on slopes up to 45 degrees while maintaining adequate oil flow to machine systems. A reversing feature is standard for the 750K and optional for the 550K, 650K and 700K to blow out debris.

DOOSAN PORTABLE POWER

Four new K-Series crawler dozers

Doosan Portable Power’s P125WJDU utility mount air compressor with auxiliary drive option includes a separate gear set on the airend. This feature allows operators to use the auxiliary drive for hydraulics and other resources with the simple flip of a switch. The P125WJDU is ideal for paint striping applications. The air compressor has a free-air delivery of 125 cfm, a rated operating pressure of 100 psig and is powered by a Tier 4 Interim-compliant John Deere 49-horsepower diesel engine.

BOMAG

Dual travel levers and large drum diameter

The BOMAG BW138AD-5 tandem vibratory roller features dual travel levers, a foldable ROPS and larger drum diameter for enhanced asphalt compaction performance. The BW138AD-5 delivers a maximum centrifugal force of 10,800 pounds. With a working width of 54.3 inches, the roller includes larger 35.4-inch diameter drums and provides dual-vibration frequencies of 3,480 or 2,820 vpm. The roller’s bolt-on oscillating and articulating joint improves maneuverability by allowing the rear drum to follow the same path as the front drum while turning.

JCB

Improved digging geometry

JCB offers eight new small-platform skid-steer and compact track loader models: the 135, 155, 175, 190 and 205 skid steers and the 150T, 190T and 205T compact track loaders. The 135, 155 and 150T machines feature radial lift, which offers improved digging geometry for heavy loading applications. Because they contain fewer pins and bushings, radial lift machines perform well in high-cycle applications such as waste, recycling and demolition. The 175, 190, 205, 190T and 205T models offer vertical lift, which provides maximum reach at full height.

VOLVO CONSTRUCTION EQUIPMENT

Torque Parallel linkage

Volvo Construction Equipment’s new L60G, L70G and L90G wheel loaders are the latest from the manufacturer in the13- to 17-ton class. All are fitted with a Volvo six-liter, six-cylinder turbocharged V-ACT (Volvo Advanced Combustion Technology) off-highway diesel. Producing between 161 and 173 horsepower, depending on the model, the three units provide high torque at low engine speeds. The series’ wheel loaders loader arms now feature the patented Torque Parallel (TP) linkage to provide excellent breakout and lifting forces and to allow then to remain perfectly parallel throughout the lifting range – ensuring exceptional load stability, according to Volvo.

Parker HANNIFIN

Handling high-pressure applications

Parker Hannifin’s mechanically bonded M8 E-Z Flex Hybrid Hose with low-volumetric expansion is designed to incorporate thermoplastic and rubber hose constructions. E-Z Flex Hose offers a two-wire braid construction with four-spiral wire hose performance, allowing a tighter bend radius and easier handling. The bend radius for a 5/8-inch I.D. E-Z flex hose is 4 inches, allowing for a tighter bend and making it lighter and easier to route.

Bobcat

Revamped Bobcat’s 2012 lineup of light construction products include the following:

Air compressors: Three portable air compressor units. Two single-stage compressor pump models, including a 5-gallon unit offering 4.1 cfm at 100 psi and an 8-gallon model delivering 13.1 cfm at 100 psi, make up the smaller units. Rounding out the air compressor line is an 8-gallon two-stage unit that provides 17.2 cfm at 175 psi.