Celebrating its 25th year of operation, ASV Inc. unveiled its newly enhanced PT-Series rubber-track loaders during ConExpo 2008, continuing the evolution that began in 1983 when the company first introduced its rubber-tracked machinery.
The new PT-series loaders replace the company’s former R-Series and SR-Series machines, some of which have been in use by construction, landscaping, and forestry professionals as well as private landowners since 2001. According to the company, the new models have been designed to provide comfort and performance in a wide range of ground conditions.
As with previous ASV rubber-track loader models, all of the new PT-Series machines use the company’s patented undercarriage technology with suspension that maximizes traction and flotation while providing a comfortable ride. The tracks also help to minimize ground pressure, making the PT-series loaders a logical choice for work on environmentally sensitive surfaces such as landscaping, golf courses, and locations where fragile underground systems need to be protected. They are also capable of working productively in soft or wet ground conditions.
The most powerful of ASV’s new rubber-track loaders is the PT-100. Its operating mass of 10,150 lb (4604 kg) is distributed over 42 wheels in the undercarriage for a minimized ground pressure of 3.8 psi (26.7 kPa)—less ground pressure per square inch than a person walking on foot. The PT-100 is powered by a Perkins 1104C-44LT turbocharged diesel engine, and a load-sensing hydraulic system that combines a side-by-side radiator/oil cooler, high-capacity reservoir, high-volume fan, and high-efficiency fan shroud. Undercarriage upgrades include new idler wheel bearings with premium metal face seals and heavier frame rails. A new forestry guard package has also been introduced for this model.
Powered by a Perkins 804C-33T turbocharged diesel engine, ASV’s PT-80 rubber-track loader delivers 80.5 hp (60kW) at 2800 rpm and a 3100-lb (1406-kg) operating capacity (50% of the tipping load). The PT-80’s multilevel suspension system uses 16 independently flexing bogie wheels per track to maximize ground contact. The system distributes the machine’s 8972-lb (4070-kg) operating mass over the entire track area for a ground pressure of only 3.5 psi (24.1 kPa). For higher floatation, ground pressure can be further lowered to 3.15 psi (21.7 kPa) by replacing the standard 18-in (457-mm) tracks with optional 20-in (508-mm) tracks.
The PT-80 features a state-of-the-art auxiliary hydraulics system that comes with bi-directional high flow for brush cutting and snow blowing, and low-flow hydraulics feature variable-speed operation for precise control of attachments. The two-speed direct drive offers low speed for maximum torque or high speed for faster travel velocities of up to 11 mph (17.7 km/h).
Designed for high performance in a wide range of applications, the PT-70 track loader is also powered by Perkins’ 804C-337 diesel, delivering 71 hp (53 kW) at 2800 rpm. With 28 bogie wheels per track, the machine’s 7890-lb (3579-kg) operating mass is distributed over the length of the tracks for a minimized ground pressure of 3.7 psi (25.5 kPa), and its narrow, 66-in (1676-mm) width allows it to operate in confined spaces where other equipment cannot fit. The PT-70’s auxiliary hydraulics system is equipped with bi-directional high flow, and low-flow hydraulics feature variable-speed operation for precise control of attachments.
According to the company, its PT-60 mid-size rubber-track loader has undergone the most significant evolution of the new product line. It now features a powerful new two-speed powertrain that gives operators the choice of higher torque for digging and tough excavation or faster travel with a maximum speed of 11 mph (17.7 km/h), making it an appropriate loader for an operation that seeks faster cycle times and high productivity. The PT-60 also features a unique undercarriage suspension that uses rugged torsion axles to maximize ground contact, even when traveling over rough or uneven terrain. Twenty-four wheels in the undercarriage distribute the machine’s 6350-lb (2880-kg) operating mass over the tracks for a minimized ground pressure of 3.6 psi (24.8 kPa). Flotation can be further enhanced by replacing the standard 15-in (381-mm) tracks with optional 16.5-in (419-mm) Extreme Terrain Tracks. Undercarriage enhancements include new steel rear idler wheels that readily shed dirt and foreign materials, and premium metal face seals for the idler wheel bearings.
Designed for construction, landscaping, utility, and private-owner applications, the new line’s PT-50 mid-size rubber-track loader delivers a 1900-lb (862-kg) operating capacity (50% of tip load). Powered by a Perkins 404C-22 naturally aspirated diesel that delivers 50 hp (37.3 kW), the PT-50’s suspended undercarriage uses 24 wheels to distribute its 6200-lb (2812-kg) operating mass over the entire track area for a ground pressure of 3.5 psi (24.1 kPa). Undercarriage upgrades include the new steel rear idler wheels, and premium metal face seals for the idler wheel bearings.
With the lowest ground pressure of the entire PT track loader line—2.8 psi (19.2 kPa)—the PT-30 is also the line’s most compact loader, with an overall width of only 48 in (1219 mm), making it a good candidate for work in confined or crowded spaces. Twenty-four wheels in the undercarriage distribute the machine’s 3350-lb (1500-kg) operating mass over the entire track area, and the Perkins 403C-15 diesel engine delivers 33.7 hp (25.1 kW) at 2800 rpm. The PT-30 can be outfitted with a wide range of loader-mounted attachments, which readily connect to the machine’s standard 10 gal/min (37.9 L/min) 3000 psi (20,670 kPa) auxiliary hydraulic system.
Select ASV machines now come with new, exclusive track options. The standard track is a general-purpose track with moderate treads that provide optimum operation and traction in the widest range of ground conditions. Also available is a special smooth Turf Track that offers very-low-impact performance for use on the most sensitive or fragile surfaces, making it a logical choice for landscape or golf course contractors. When extra traction is needed for very wet, muddy, or snowy conditions, the new Extreme Terrain Track is also available. This new track is wider and offers more flotation than the standard track, as well as extra-deep, self-cleaning treads for added traction over the worst ground conditions. Turf Track is available for ASV’s PT-30 and PT-50 models, and the Extreme Terrain Track is available for the PT-50 model.
Other enhancements to various models in the new PT product line include new dash panels with new gauges, more indicator lights, and optional tachometer and temperature gauges. All machines now include a poly-roof panel and a larger roof window offering more upward visibility for easier loading. New optional doors on all models include improved handles and tighter seals, and the PT-70 and PT-80 models now feature larger standard interiors.