BI500 is the real game changer for big projects. Developed for excavators from 23 t to 30 t, with 110 t cylinder of force, BI500 is able to carry a 600 mm cutting diameter.

Technical Data

Excavator class weight 23 – 30 tons
Attachment weight 1810 Kg | 3990 lbs
Min cut diameter 200 mm | 8"
Max cut diameter 500/600 mm | 20/24"
Oil Pressure 300 - 350 | 4350 - 5075 psi (min-max)
Hydraulic flow 180 – 250 l/min | 48 – 80 gal/min (min-max)
Width 1665 mm | 65"
Length 1940 mm | 77"
Height 890 mm | 35"


OMEF Big Inch was born from the idea to combine simplicity, efficiency and versatility in a single machine, joined with an in-depth design and engineering study. The result is a worldwide success: designed to work on all types of wood, “Big Inch” is able to grab, cut and hold the plant at the same time.

The efficiency of the “Big Inch” shear is granted by the quality of raw material used.  OMEF relies only on wear resistant XAR steel that makes the tree shear incredibly strong and robust and it ensures an outstanding performance even in the most extreme working conditions.

The integrated blade, which provides the highest levels of resistance, hardness and toughness, has a patented and unique profile in the world, making “Big Inch” capable of cutting down plants with a quick and neat cut.

Based on these elements, OMEF has developed the largest range of tree shears on the market with six models available. Big Inch can be fitted on operating machines starting from 2 t up to 50 t and it can be customized with several accessories able to increase the efficiency and productivity, offering the best tailor made solution for all forestry professionals.