Rotor speeds from 100 to 170 rpm can be selected under load, allowing the MPH122-2 to be adapted to match specific job requirements. Variable rotor speeds help to optimize the mixing process and allow binding agents and soil to be processed with optimum efficiency.
Terex cold planers
Terex Roadbuilding re-enters the utility mill market with the Terex CMI PR165, PR220 and PR330 cold planers. The units can tackle a variety of applications, including cul-de-sacs, wedge and header cuts, bridge decks and shoulder excavation.
The units feature a hydrostatic rotor drive with built-in relief system. A parallelogram cutter subframe design delivers 24-in. elevation to lower and raise the cutter in and out of the cut. A 36-in. drum diameter enables a 12-in. cutting depth.
The "center mount" cutter design positions the full weight of the machine over the rotor for enhanced performance even in tough cuts. Four-wheel steering provides coordinated front and rear, crab, front-only and rear-only steering modes. Four-wheel drive and a limited-slip differential improve tractive effort.
The 165-hp PR165 and 225-hp PR220 are powered by fuel-efficient Tier III-compliant diesel engines. The PR165 has a 24-in. standard cutting width, while the PR220 has a 30-in. milling width. An 8-in. inside turn radius allows cutting around headers and manhole covers. Two working speeds of 0 to 200 fpm and 0 to 360 fpm allow machine speed to be matched to jobsite conditions.
The PR330 multipurpose milling machine has a 330-hp Tier III-compliant diesel engine. Standard cutting width is 48 in. with 24- and 36-in. widths available. Automatic cutter depth controls are monitored and adjusted from the vibration-isolated operator's platform. The cross slope feature provides a +/- 8° slope. The unit comes standard with a two-stage, high-capacity conveyor system.
Wirtgen mid-sized asphalt cold mill
Wirtgen's new W 120 F mid-sized asphalt cold milling machine replaces the W 1200 F/T. This 280-hp unit has a 47.2-in. milling width and a 12.6-in. cutting depth, making it suitable for removing complete asphalt courses to their full depth. The optional Flexible Cutter System permits use of different milling drum widths and varying line spacings.
The 42,549-lb. W 120 F incorporates a mechanical milling drum drive. Milling depth can be set via the rear hydraulic height adjustment in two different speeds. Standard speed has been optimized to enable precise leveling. Fast motion enables quick raising and lowering of the machine, such as when moving into position. An optional Level Pro automatic leveling system uses sensors to scan a reference plane, then automatically adjust height.
Front-end loading of RAP is achieved via a larger two-part conveyor system. A hydraulically folding supporting wheel is standard.
Power is supplied by a six-cylinder turbo diesel engine equipped with electronic controller and automatic engine fan control. Engine speed is adjusted automatically in both milling and transport modes.
Other features include a hydraulic all-wheel travel drive system and a finger-light hydraulic steering system. The unit comes equipped with wheels or optional crawler tracks.