SBU Division

Rockhead (SBU-RHSS or SBU-RHDS)
Technical Description
The Robbins Rockhead is ideal on longer utility
installations (over 1,000 ft) where line and grade are
critical. The Rockhead is available in Double Shield
(SBU-RHDS) or Single Shield (SBU-RHSS) models. The
Double Shield Rockhead is self-propelled using a
gripper system. The Single Shield Rockhead must be
used in conjunction with a pipe-jacking system or
primary liner erected in the tailshield. Muck is removed
using a small invert auger, vacuum system or muck cars.

Guided Tunnelling
The Rockhead can be steered throughout the drive from
an operator’s console inside the rear shield. Articulation
cylinders and stabilizer pads allow for continuous control
of line and grade. The machine’s heading can be
continuously monitored using a laser targeting system.

A Cost Effective Solution
The Rockhead offers more efficient excavation than
typical carbide bit or roller cone cutting heads. Most
carbide cutting tools tend to break off in rock above
11,000 psi UCS. The Rockhead uses disc cutters to chip
away hard rock from 4,000 to over 25,000 psi UCS.

ROCKHEAD APPLICATIONS
• Line- and grade-sensitive crossings
• Replacement for carbide bit and roller cone cutterheads
• Long bore lengths over 1,000 ft
• Pipe jacking
AVAILABLE FOR PURCHASE OR LEASE