Twin Header Rock Grinders
Make An Impact On Hard Surfaces
When conventional digging systems are too weak and percussion tools have little effect choose SIMEX Twin Header Rock Grinders/Rotary Cutters that are designed for trench work in hard and compacted ground, for concrete and rock wall profiling, dredging, demolition and quarry work.
Rotary Cutter heads give excellent results for certain types of fixed-section trenching when excavating hard and rocky materials, as well as for mining and tunneling applications. Rotary Cutters come with models to suit 2.5 - 75 tonne excavators and can be used in quarries with a variety of rock, including limestone, gypsum or schist with rocks having a hardness of up to 85 mPa.
Low noise and vibration level
Twin Headers do not produce strong vibrations or high noise levels making them ideal for noise and vibration sensitive works.
The patented design of direct drive, high displacement hydraulic piston motor ensures high performance and low speed/high torque without a need of reduction gear box.
Why choose a SIMEX Twin Header?
The advantages of SIMEX Twin Header Rock Grinders compared with conventional methods such as explosives or hydraulic rockbreakers are various:
- A more accurate profiling
- Precise cuts
- Milled material can be reused on site
- Ideal for narrow and deep excavations
- Continuous working, therefore greater efficiency
- Low vibrations and low noise enabling the work even in sensitive areas
- Minimisation of fractures within the rock mass
Applications
The Rock Grinders have two main types of applications; standard, where the rock grinder operates in applications with infrastructural or demolition purposes and heavy, when working in contexts such as quarries, mines or tunnels. In addition, SIMEX TF rock grinders can be used in many various fields and niche applications.
QUARRIES AND MINES
In quarrying works, the Rock Grinder showcases its full versatility: on the one hand, it guarantees selective breaking of the rock mass ensuring the stability of the wall in applications such as open pit extraction; on the other hand, it increases profitability, producing a crushed material that often does not even require further volume reduction by additional equipment or operating machine.
ROADWORKS
The small SIMEX Rock Grinders work effectively on the road surface, removing set-sections of deteriorated asphalt for subsequent restoration. The milled material can be reused immediately onsite.
UTILITIES
When laying underground utilities, such as water or gas pipes, the SIMEX Rock Grinder is necessary for excavating a trench with a larger section. By using both drums tangentially, productivity remains high while still containing vibrations and noise (<87 dB), which instead characterize the percussion systems.
BUILDINGS | INFRASTRUCTURE | DEMOLITION
The small and mid-sized models of the SIMEX Rock Grinder range can be used successfully in building and infrastructure works such as the demolition of pavements and interior and exterior curtain walls, for milling vertical surfaces to remove plaster, for exposing structural elements or reclaim deteriorated concrete.
Rock Grinders are ideal for those demolition works where it is not possible to work with percussion systems or explosives or construction site that has space limitations or is near sensitive areas.
Furthermore, the Rock Grinder tolerates the presence of rebars in reinforced concrete.
TUNNELING
The SIMEX TF Rock Grinders are ideal for vaulted milling work with the aim of removing deteriorated concrete. Profiling with the Rock Grinder does not stress the rock mass and the bearing structure, ensuring the perfect balance between productivity and precision.
PORT AND UNDERWATER WORKS
The mechanical gaskets on the drums ensure maximum resistance to external agents even when the Rock Grinder is completely submerged in water or muddy soil, up to a maximum depth of 30 metres.
AGRICULTURE AND FORESTRY
The Rock Grinders can be fitted with special teeth for processing wood, in those jobs where crushing roots and tree trunks is necessary. In general, they can also be used in tilling mixed soils featuring a heavy presence of rocks and stones, for the subsequent laying of underground utilities or planting.