Forestry and Logging Equipment: Skidding Tractor (Skidder) Caterpillar

Model	Caterpillar track length on ground level
D5H TSK serie II	2740 mm - 9 ft.
D4H TSK serie II	2640 mm - 8.7 ft.
D4H	2636 mm - 8.6 ft.
527 grapple	2850 mm - 9.4 ft.
527	2846 mm - 9.3 ft.
517 grapple	2910 mm - 9.5 ft.