Category: Brochures & Spec Sheets
The Robbins Rockhead is ideal on longer utility installations (over 500 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 can be removed using a small invert auger or muck cars.
The Motorized SBU is the optimal choice for longer utility installations (over 300 ft) or for crossings with specific line and grade requirements. The SBU-M is an intermittently manned, articulated mixed ground and hard rock boring machine for use with standard Auger Boring Machines (ABMs) or pipe jacking systems.
The small diameter Double Shield TBM (SBU-DS) is ideal for long tunnels (up to 3 km) without intermediate access. The SBU-DS, in diameters from 2.2 to 3.0 m (88 to 118 inches) is a manned-entry, hard rock tunnel boring machine.
The Small Boring Unit (SBU-A) is a proven solution for medium to hard rock utility installations up to 150 m in length. The SBU-A can be used with any conventional auger boring machine (ABM) from 0.6 to 1.8 m in diameter and utilizes a full-face auger for spoils removal. Before excavation, the SBU-A is welded to the lead casing. A full-face auger is added to the casing and the assembly is lowered onto the ABM track. In hard rock, the circular cutterhead is tted with disc cutters, while in mixed ground a combination of ripper teeth, drag, bits, and disc cutters are used.
From tunnel boring machines to cutting tools and continuous conveyors, Robbins is a total supply company. Read the brochure to find out about our latest products, world-class services and unparalleled support.