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Terex PR330 Multipurpose Mill Features Wide Wheel Stance

Fri December 18, 2009 - National Edition
Construction Equipment Guide

The Terex PR330 utility mill from Terex Roadbuilding features a wide 18 ft. 4 in. (5.6 m) wheel stance and a low center of gravity for sure-footed operation in the field. The 16-in. (40.6 cm) wide tracks of the PR330T deliver sturdier operation and better traction than other units with 9-in. (22.9 cm) wide tracks, according to the manufacturers.

A double parallelogram rear suspension design keeps the tracks level to the grade and evenly distributes the weight when operating on uneven terrain, further enhancing machine stability.

The PR330 cold planer features a number of options, so it can be configured to match a wide variety of applications. It is available with either a four track (PR330T) or four wheel (PR330W) drive system to fit the needs of the contractor. The available multiwidth cutter offers milling widths of 24, 36 and 48 in. (61, 91 and 122 cm) to maximize machine utilization. The cutter’s clamp-shell connector design offers fast and simple width changes in about one hour.

With four steering modes, the PR330 offers a tight turning radius for enhanced maneuverability when cutting around obstructions. The operator can choose between front only, rear only, front and rear crab or coordinated front and rear (cramp) steering, enabling the machine to deliver an inside radius as small as 9 ft. 8 in. (2.9 m). When milling cul-de-sacs, this multipurpose machine delivers a small 14 ft. (4.3 m) right-hand or 19 ft. (5.8 m) left-hand turning radius while keeping the rear track inside the cut.

The PR330 features a “center mount” cutter design that positions the full weight of the machine over the rotor, enhancing performance even in the toughest cuts. The subframe parallelogram design delivers a 24-in. elevation to lower and raise the cutter in and out of the cut.

The planer’s standard 40-in. (101.6 cm) diameter drum cuts a 48-in. wide path at depths reaching 12 in. (30.5 cm) for milling and stabilization patchwork. The drum’s 0.5-in. (1.3 cm) bullet tooth spacing leaves a smoother surface for motorists than most standard half- and full-lane machines. The cutter’s efficient hydrostatic drive features a built-in relief system, which protects critical drive components from severe damage should the cutter hit an obstruction.

The machine features a water system with a high mist type nozzle for cooling of cutter teeth and dust control. Under typical operating conditions, the PR330’s 375 gal (1400 L) water tank delivers uninterrupted service for up to 3.5 hours.

The Terex PR330 cold planer is powered by a Tier III and Stage IIIA compliant, 330 hp (245 kW) diesel engine. Similar to larger cold planers in the Terex Roadbuilding line, this multipurpose milling machine includes a standard two-stage conveyor system. Both hydraulically variable, two speed conveyors feature a 24 in. width, while the second stage conveyor swings 55 degree to the left and 35 degree to the right of center for efficient truck loading.

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