OPEN ACCESS
NFM, Volume 40: 19–29.
Original scientific paper
https://doi.org/10.5552/nms.2019.3

HTMLPDFDownload PDF

Abstract

This paper examines the effect of Timberjack 240 C in timber extraction in the final and seeding felling. Field surveys were conducted in the area of Okučani Forest Office, compartmet 44a of the Management Unit »Okučanska brda« and in the area of Nova Gradiška Forest Office, compartment 74a of the Management Unit »Južni Psunj«. For Timberjack 240 C in the compartment 44a, during 11 days, 4406.12 minutes were recorded at the work site, which is 400.56 minutes per day, or 83.45% of the prescribed working time of 480 minutes. Of the total recorded time, the effective time is 3300.02 minutes or 74.90%, while the general time is 1106.10 minutes or 25.10%. For Timberjack 240 C in the compartment 74a, 2641.57 minutes were recorded during 9 days at the work site, which is 293.51 minutes per day, or 61.15% of the prescribed working time of 480 minutes. Of the total recorded time, the effective time is 2157.20 minutes or 81.66%, while the general time is 484.37 minutes or 18.34%. Allowance time is 16.09% and 20.37% of the effective time. Skidder Timberjack 240 C is one of the most efficient machines for timber extraction, and especially for final felling, when using the half-trunk and trunk method. For the application of such skidder, it is necessary to prepare the study site with all the influencing factors and constantly monitor the workflow. In skidding wood assortments, significantly smaller effects are achieved due to a smaller load volume.

Keywords: cable skidder Timberjack 240 C, timber extraction, productivity, costs