Caterpillar Performance Handbook, January 2017, SEBD0351-47

Features

Harvesting SATCO Directional Felling Heads

Applications: ● The SAT420 is ideally matched with a Cat 320D FM harvester for efficient felling. The head is most effec- tive when single felling trees between 305–508 mm (12–20 in). The shorter tilt frame and chassis and the smaller jaw opening provide quick motion to reset the felling head for the next cut compared to a SAT630. ● The SAT630 is ideally matched with a Cat 324D FM Harvester or Cat 522B leveling track harvester. The head provides the most benefit when single felling trees between 457–762 mm (18–30 in). However the SAT630 becomes more effective than the SAT420 when the majority of the trees being felled exceed 500 mm (20 in). Owning & Operating Costs: ● Both directional felling heads provide low owning and operating costs when compared to traditional high speed disc felling heads. Not only do the direc- tional felling heads require less horsepower, consume less fuel, the heads also provide less stress on carrier components such as pins, bushings, stick, and boom joints due to the floating motion of the head once the trees are felled.

Features: Structures:

● Leveraging a chassis design that has accumulated more than 40,000 hours in demanding felling appli- cations, the SATCO Directional Felling Heads have a strong reputation of being one of the most reliable and efficient directional felling heads on the market. Hydraulics: ● The directional felling heads are 100% hydraulic and do not have any electronics on the head. SATCO’s “HOSE THROUGH CENTER” connection to the carrier allows the hoses to travel through the center line of the attaching pins. This prevents the hoses from over bending and causing premature failure. It also protects the hoses from damage when falling trees in dense forests. In addition, the 360 degree con- tinuous rotation rotator allows felling in any possible direction in relation to the carrier without being lim- ited by a rotation stop and without the possibility to damage hoses from over rotation of the head. Saw Systems: ● The saw units are supported by a large 30 cm (12 in) diameter slew bearing making them a very robust saw unit especially designed for falling large diameter trees. The saw tensioning adjuster is a heavy duty manual adjuster with ¾" pitch chain. The heads also use a unique locking system for the saw sprocket to prevent broken drive shaft keys and damaged saw motor shafts.

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Edition 47 5-25