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 (also known as Rotary Cutters) that are designed for trench work in hard and compacted ground, concrete and rock wall profiling, dredging, tunneling, demolition and quarry work.
Rotary Cutter heads give excellent results with a variety of rock, including limestone, gypsum or schist with rocks having a hardness of up to 85 mPa. Rotary Cutters come with models to suit 2.5 - 75 tonne excavators.
High Performance
Optional 360° hydraulic rotation allows operator to find the ideal working position resulting in increased productivity and maximum precision.
Low Noise and Vibration
The advantages of Simex Twin Header Rock Grinders compared with conventional methods such as explosives or hydraulic rockbreakers are various but particularly, their quiet operation allows them to be put to work near sensitive areas (residential zones, hospitals, schools, bridges and infrastructures).
Especially recommended for finishing operations, where high precision, minimum disturbance and optimum aesthetic result are required.
Low Maintenance
The direct drive motor does not require lubrication or other types of routine maintenance.
Additionally, the unit is safe from inpurities and dust proof as mechanical seals on drums prevent dust from entering, even when attachment is submerged into the ground, muddy conditions included. Filter on feed line prevents impurities from entering motor.
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
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 and 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).
Demolition, Infrastructure and Buildings
The small and mid-sized models of the SIMEX TF Rock Grinder range can be used successfully in building and infrastructure works such as the demolition of pavements and interior and exterior curtain walls, milling vertical surfaces to remove plaster, exposing structural elements or reclaiming deteriorated concrete.
SIMEX Rock Grinders are ideal for those demolition works where it is not possible to work with percussion systems or explosives, or for construction sites that has space limitations or are near sensitive areas.
Furthermore, the TF Rock Grinder tolerates the presence of rebars in reinforced concrete.
Tunneling
Underwater works, Ports, 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.
