Small Diameter Rock Boring Equipment

Boring through rock is not as hard as you think

Own or rent one of Robbins’ small diameter boring machines and experience the most time and cost effective way to bore through hard rock. If you have a utility installation project that requires rock bores, or if you are a contractor that wants to extend your capabilities, then read about the high quality, durable, proven solutions that Robbins has to offer. Robbins employs a highly qualified, knowledgeable team that can help you tackle your next project with confidence.

No other company knows more about boring through hard rock.

Click on the links below to learn more about each machine type:

Robbins Small Boring Units (SBU-As)

The SBU-A is a small diameter rock cutting head (from 24″/600 mm to 72″/1.8 m) that can be used with any Auger Boring Machine (ABM) to excavate hard rock on drives less than 500 ft (150 m). The Robbins SBU-A has been proven on hundreds of jobs across the U.S. Over one hundred contractors in locations around the world have proven the SBU-A works better than any other method of excavating small diameter, hard rock bores.

Robbins Motorized Small Boring Units (SBU-Ms)

If you need to bore a small diameter tunnel in hard rock where line and grade are critical, Robbins offers Motorized Small Boring Units (SBU-Ms). These machines have been specifically designed for long bores (over 500 ft/150 m) with difficult ground conditions. They are offered in cutterhead diameters from 48″/1.2 m to 78″/2.0 m. If you are not familiar with SBU-As, we suggest you read about them before researching SBU-Ms.

Robbins Rockhead (SBU-RHSS or SBU-RHDS)

If line and grade are critical and you have a longer bore (over 1000 ft/300 m in length) for your next project, you should consider the Robbins Rockhead. The diameter range is available between 54″ (1.35 m) and 78″ (2.0 m). The Robbins Rockhead is a powerful mid-sized tunneling machine available in both Single Shield and Double Shield models.