Equipment

Akkerman Inc.

Excavator Boring Shields (EBS) and the EX‐50 Excavator are designed for manned‐entry, open‐face mechanical excavation of large diameter pipe jacking, liner plate, and ring‐beam and lagging tunnel building applications.

The slant faced Excavator Boring Shield and pipe are hydraulically advanced with the Keyhole Jacking/Thrust Frame or with the Tunnel Boring System and 5200 Pump Unit thrust cylinder.

The operator controls the EX‐50 Excavator’s claw with a joy stock and foot controls to excavate spoil for removal onto the belt conveyor to the Haul Unit (Muck Cart) for disposal.

The EX‐50 Excavator’s rotating boom has a full range of motion, including extension beyond the bore’s face to remove obstructions, as necessary.

Tunnel line and grade are controlled with the use of a standard passive pipe laser. The operator assesses the location of a fixed laser point on the EBS cutter head and makes adjustments as necessary.

Sand shelves come standard with every EBSs purchased. They can also be equipped with closeable hydraulic doors to prevent subsidence into the tunnel interior.

Features:
  • Simple, cost‐effective solutions for large diameter pipe jacking with the ability to remove obstructions at the face
  • Perform best in sand, medium to stiff clay, dry or dewatered soil, and weathered rock without groundwater
  • EX‐50 Excavator interchangeable between EBS models

EBS 840
EBS 960
EBS 1080
EBS 1200
EBS 1440

Specifications
ModelShield ODOn-Board Power PackExcavator Controls
EBS 840100-102 in.OptionalEX-50
EBS 960114 in.OptionalEX-50
EBS 1080128 in.StandardEX-50X
EBS 1200144 in.StandardEX-50X
EBS 1440168 in.StandardEX-50X

Increase kits are available. Hydraulic Closeable Doors Optional on all diameters.

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Testimonials

Super Excavators, Inc.

Our interaction with Akkerman began on a project where we were struggling with their competition’s machine. Changing machines during a project to their machine required a leap of faith on our part. That project completed 20 years ago turned out to be successful and propelled us into 20 years of completing scores of successful micro tunnel projects throughout North America. Providing many innovations throughout this time has allowed us to mine many geology types and increase drive distances with curves to over 2500 lf. I can attest 30 years ago, technology did not exist that today allows us to complete projects efficiently and at a lower cost. Their leadership in providing technically superior AMERICAN made equipment is second to none in the world today.

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Tunneling