TECHNOLOGY REVIEW – HARVESTERS


The Ponsse Bear is a leader in tough harvesting conditions


manoeuvrability. C44 is based on the famous Ponsse C22 familiar from the smaller Fox model, but is built stronger and so is more durable. It has a reach of 10-11 m, depending on the harvester head size.


“Development continues at


Ponsse, carefully listening to the users of the machines. Focusing on just the right things guarantees the success of our customers, partners and ourselves.”


Caterpillar Forest Products designs and builds a complete line of CTL equipment, including track and wheel harvesters, all supported through the worldwide Cat dealer network. The Cat 501 and 501HD short tail swing track harvesters are easy to manoeuvre in select cut operations and well balanced for stability in final felling applications. They can be equipped with either fixed or dangle heads. The fixed linkage


Development


continues at Ponsse, carefully listening to the users of the machines – focusing on just the right


things guarantees the success of our


customers, partners and ourselves – Ponsse


The Cat 501HD track harvester is easy to manoeuvre and well balanced 60 International Forest Industries | FEBRUARY/MARCH 2012


boom provides 7.1 m (23.3 ft) reach to the tree with a PF-48 fixed head. Lift capacity is 3.8 t (8,378 lb). For dangle heads, the telescopic boom provides 8.2 m (27 ft) reach to the tree and lift capacity of 2.268 t (5,000 lb). “The reach of the telescoping


boom reduces cycle times because the operator does not have to move the carrier as much to get into position for a cut,” Glenn Brown, Harvester and CTL Specialist for Caterpillar, said.


“The boom’s V-shaped bottom extends the life of the wear pads and minimises side-to-side movement as the boom moves in and out.” The track harvesters are


equipped with the 117 kW Cat C6.6 Tier 3 Stage IIIA engine with ACERT Technology. The engine generates more torque in the lower rpm ranges for more power. This also maintains higher hydraulic flow under load for faster processing.


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