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

It is great to see a family-owned company in the tunneling industry continue to succeed and progress with their next generation of leadership at the helm. Akkerman continues to put cutting edge technology in the hands of contractors like ourselves that enable our talented people to do what we love to do: put pipe in the ground precisely online and grade! Whether it’s a guided boring system, a custom-built TBM, top notch field technician support on a Microtunnel drive, or the gathering of the industry’s top experts at one of their “Akktoberfests” to educate us all; they are doing things the right way. Akkerman has played a big role in our company’s success in the trenchless industry and we look forward to working with them for years to come.

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Tunneling