The working principle of Big rock splitter is based on two counter wedges inserted in a pre-drilled hole. A hydraulic cylinder pushes out a centre wedge between the counter wedges to spread them apart and the rock is forced to crack.
Insert half of the total length of wedge and operate the Yamamoto splitter to split.
Then insert about ¾ of the total length of the wedge to split again.
Finally, insert the total length of the wedge and split to complete.