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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 (Rotaty Cutter Heads) that are designed for trench work in hard and compacted ground.  

With different cutter drum options and tools with different features Twin Headers are suitable a range of job types and various materials requiring milling, concrete and rock wall profiling, dredging, demolition and quarry work.

Simex Twin Header Rock Grinders give excellent results for certain types of fixed-section trenching when excavating hard and rocky materials, as well as for mining and tunneling applications.

Twin Headers come with models to suit 1.5 - 70 metric 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.

Minimal vibration and low noise levels

As Twin Headers do not produce strong vibrations or high noise levels, you can complete the work near schools, hospitals, existing infrastructure and other sensitive areas. 
 

  

 

 

FEATURES AND BENEFITS

  • Integrated high displacement hydraulic piston motor  -->  High torque and high performance
  • Square holes of coupling plate  -->  Cutter head can be rotated 90 degrees
  • Filter on feed line when hoses are being connected to the excavator -->  Impurities prevented from entering the motor
  • Gaskets fitted on drums  --> Seal against dust also when attachment is submerged into the ground, even in muddy conditions
  • Replaceable anti-wear plates  -->  Low maintenance cost
  • Double support bearings for each drum  --> Longer service life as shaft transmits motion only and bears no load

 

APPLICATIONS

With different cutter drum options and tools with different features Twin Headers are suitable a range of job types and various materials requiring milling.

  • TRENCHING
  • TUNNELING
  • STRIPPING AND RECLAMATION
  • UNDERWATER WORKS
  • QUARRYING
  • DEMOLITION
  • WALL PROFILING
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SPECIFICATIONS TF 200 TF 400 TF 600 TF 850  TF 1100  TF 2100  TF 2500  TF 3100
Recommended excavator weight * (t) 2.7-7 6-12 9-16 14-22 20-34 28-45 40-55 50-70
Standard Drum width (HP) (mm) 565 625 700 800 850 950 1000  1250 
Drum width (GP) - optional (mm) 900  1000  1100  1150  1350 
Drum width (WP) - optional (mm) 650  750  850  1000  1200  -
Weight without bracket (1) (kg) 300  470  640  1140  1465  2410  2700  3650
Hydraulic motor power kW (hp) 27 (37)  37 (50)  50 (68)  61 (83)  87 (118)  112 (152)  140 (190)  175 (238) 
Torque (kNm) 2.5  4.6  6.9  10.6  17.5  22.7  31.7  42.5 
Cutting force (bar) 13.5  20.3  27.6  35.2  53.4  64.3  83.7  114.5 
Max pressure (2) (bar) 350  350  350 350  350  380  380  380 
Required oil flow (3) (l/min) 45-80  65-120  90-150  130-190  170-250  240-340  280-400  350-500 
Drum diameter - HP (mm) 380  450  500  595  660  750  750  750 
Height without bracket (mm) 770  900  960  1250  1310  1575  1675  1770 
Drum distance (mm) 110  130  130  150  160  175  250  300 
Tooth holder diameter (mm) 20  22  22  38/30  38/30  38/30  38/30  38/30 
1) User is responsible for ensuring that the equipment meets the excavator’s specifications and weight requirements.
2) Torque and cutting force decrease with lowered operating pressure.
3) RPM and cutting speed decrease with lowered oil flow.
 
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demolition / trenching, profiling
and resurfacing rock and cement walls

 Tunnelling / Cuts for rib installation Quarrying
     
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