HRD Series

The needs : Conventional rock removal method-drill and blast- has been restricted in rock work sites due to vibrations, sounds, and flying rocks. So alternatives had to be used. Chemical expansion agents, Cracking capsules, Hydraulic wedge splitters, and Hydraulic piston type splitters have been tried . Each seemed the best method in its introduction but was soon replaced by. Time and cost was another important factor to be considered. Hydraulic piston type splitter seems to meet these important factors satisfactorily.

The requirements in hard rock splitting : In the beginning edge type splitters were used. However they are somewhat weak for hard rock demolition. Hole spacing is so densely made. Otherwise splitters could not break rock at all. Chemical expansion agents take long hours(10 to 20 hours) to expand completely. To solve these problems Piston type splitters were developed in area like Korea where hard rocks (like granite ) are prevailing. Piston type splitters fracture rocks with splitting force of over 1,000 tons up to 2,500 tons. Each cycle of fracture is made within 5~6 minutes.

We have 4 kinds models, HRD95, HRD90, HRD85, HRD80.

That numbers are from the diameter of splitting rods.

HRD Series machine is consist of 6 splitting rods, 2,000kgf/cm2 power pcak, hydraulic hoses and canopy.


HRD Series give you highest productivity due to a very high splitting force (2,000tons/m²) and a high durability and reliability.


Rock splitting offers more accuracy than explosives because the direction of splitting is extremely easy to control.


Splitting does not cause any dangerous flying object and make you control splitting direction, there is no need for temporal evacuation that causes the pause of the other operations and labour cost loss.


HRD Series are very simple and easy to use and there is no need for highly experienced operators.


Rock Splitters