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•  PRODUCTS
EVALUATING CUTTING PERFORMANCE
 

What factors are most important in determining excavation productivity?
 
Did you know?

      
 

The power (hp, kW) of a cutter head attachment is not the most important factor for efficient cutting. It’s the pick force a cutting drum can project into the rock face that counts!

Modern cutter heads have sturdy spur gears powered by low-speed, high-torque hydraulic radial piston motors. Only the cutter heads of Alpine Sales & Rental Corp. have transmissions with GEAR REDUCTION, a feature which is protected by US Patent No. 6,158,818 and European Patent No. EP084146 B1.

    

We’re so confident that our cutters offer the
best value, we will gladly prepare for you a
free side-by-side comparison for any cutter
head on the market

See a comparison worksheet...coming soon

Benefits of Gear Reduction:
  • Gear reduction multiplies the torque (ft. lbs, Nm) of the cutter drive motor, creating a larger output force, which determines the cutting (pick) force (lbs, N).

  • A higher cutting force results in both a higher rate of production (yd3/hr; m3/h), and greater hard rock cutting capabilities. Rock strength is measured in Unconfined Compressive Strength (UCS), with units of psi or MPa.
  Cost Comparison:

It’s all about production and finishing the job on time and under budget. Contractors purchase cutter head attachments because they need to produce as many cubic yards per hour as possible at trenching and other excavation projects. A good way to evaluate the cost effectiveness of a cutter head unit, is to compare the unit cost for output torque and cutting (pick) force at the same hydraulic pressure (psi, bar).