Rayco grinds through tough clearing jobs

  • 05-Mar-2009 04:19 EST
T275Act3.jpg

Steep slopes are no problem for Rayco's T275A. Thanks to large tracks and low surface pressure, it can handle most untouched terrain without trouble.

Site preparation, or the removal of stumps and forestry products prior to construction, is an important step in developments. Rayco Manufacturing hopes to make it easier with its line of preparation machines, including the T275A. This 31,611-lb (14,339-kg) preparation machine can accept either forestry mulching attachments or a stump grinding wheel, depending on the task at hand, and offers the necessary traction to move around untouched property. Damage to the site is minimal due to 6-psi (41-kPa) ground pressure.

John Deere Power Systems supplies the power with a six-cylinder, 275-hp (205-kW) turbo diesel. The tracked two-range chassis uses hydrostatic drive and consists of a ladder frame with four crossmembers. Working in dusty sites, the operator sits in a heated and air-conditioned cab, pressurized with clean air. Joysticks control the movement of the 242-in (6147-mm) machine.

Mulching, or forest mowing, is done by an 8000-lb (3629-kg) attachment. This 93-in (2362-mm) wide rotating cylinder has 46 carbide-tipped teeth and can cut branches up to 8 in (203 mm) in diameter. It is driven through a dual high-pressure hydrostatic transmission via a Gates Polychain GT drive belt system.

The stump grinder, called the Hydra-Stumper, is a 3500-lb (1588-kg) wheel measuring 48 x 3 in (1219 x 76 mm). Again, power is through the high-pressure hydrostatic system and a Gates drive belt. The wheel has 56 teeth, spread around the edge and surfaces of the wheel for horizontal cutting movements as well as vertical. Extracting and hauling stumps, and the costs involved, are eliminated, saving time and money.

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