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GUIDED BORING

JACKING FRAMES

GBM 4800 Series Jacking Frame

Up to 48-in. OD Pipe

The GBM 4800 Series Jacking Frames are able to install up to 48-in. OD pipe and can be supplemented with skids extensions for 8, 10 and 20-ft.+ pipe lengths. The frame's 7.5-in. cylinders are available in 30-in. or 40-in. stroke configurations. The GBM 4800 jacking frame can install a one meter length pipe from a minimum 11-ft. shaft and 8-ft. length concrete pipe from a 15-ft. shaft.

GBM 240A Jacking Frame

Up to 24-in. OD Pipe

GBM 240A jacking frame features a 48-inch stroke cylinder, universal auger boring machine adapter, and a stand-alone base for fitting the frame within an eight by 12 foot shaft. This jacking frame can install up to 24-inch maximum OD pipe in a minimum one meter length with 100 tons of jacking force, 50 tons of pullback force and 10,500 foot pounds of rotational torque. The GBM 240A Jacking Frame is equipped with a Rock Drill Adapter and TriHawk® drill bit jacking pressure control assembly to manage thrust pressures.

GBM 308A Jacking Frame

Up to 28.5-in. OD Pipe

The GBM 308/339A jacking frames install up to a 28.5-inch maximum OD pipe in one meter lengths from an eight foot round shaft. It features a 10.5-in. stroke cylinder, 100 tons of jacking force, 50 tons of pullback force with 10,500 foot pounds of rotational torque. Round and square shaft adapters and jacking frame extensions are available to conform to shaft requirements.

GBM 339A Jacking Frame

Up to 31.5-in. OD Pipe

The GBM 3339A Jacking Frame allows operators to install up to a 31.5-in. maximum OD pipe in one meter lengths from a nine foot round shaft. This jacking frame features a 10.5-in. stroke cylinder, 100 tons of jacking force, 50 tons of pullback force with 10,500 foot pounds of rotational torque. Round and square shaft adapters and jacking frame extensions are available to conform to shaft requirements.