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GBM


Guided Boring Machines (GBM) The Guided Boring method installs small diameter pipes with grade and alignment precision. The pipe installation involves a three-step process where launch and reception shafts are strategically located to minimize surface disruption. Three robust jacking frame configurations are available to meet contractor’s needs. Akkerman GBMs are used in conjunction with a theodolite guidance system to provide accurate pipe installation. Our GBM is extremely versatile and our customers continually surprise us with new applications. Akkerman manufactures GBMs for installation of pipe in the 4" - 48" OD range in displaceable soil under 50 blow count. GBM Technical Manual (9 MB)

	240A Jacking Frame The 240A is a single stage long frame with a 48” stroke cylinder for smooth continuous advancement. It is designed to work in a 10’+ shaft and can be used as a stand alone unit or in conjunction with an auger boring rig.
	308A Jacking Frame The 308A is latching frame designed to work in a compact launch 8’ shaft. Frame extensions are also available for added versatility. This unit can be used as a stand alone frame or in conjunction with an auger boring rig. 308A Jacking Frame Spec Sheet
	4812A Jacking Frame The 4812A frame is designed to operate out of a 12’ foot shaft and jack pipe up to 2 meters long with a maximum of 48” O.D. the 4812A features independent jacking, rotation and cutter bit operation. This frame offers 200 tons of jacking force, 100 tons of pull back force and 20,000 foot pounds of rotational torque. 4812A Jacking Frame Spec Sheet
	P100Q and P275T Power Packs Akkerman offers the P100Q and P275T power packs. They provide hydraulic power to operate all jacking frames and include the steering heads, guidance kit and breakout tooling. Features a remote pendant for in-shaft operator control.
	Jetting and Lubrication Combination Pump The Jetting and Lubrication Pump arrangement allows customers to maintain optimum production rates in variable soil conditions in one compact, easily-transported unit. It features independent hydrostatic flow controls for premium user control in a variety of soil conditions. The tanks can be easily serviced at the open/close valve on the tank outlet. An in-tank agitator mixes the lubrication quickly and keeps it consistent throughout the production process. Jetting and Lubrication Pump Spec Sheet
	Powered Cutter Heads Powered cutter heads for the GBM systems are unique to Akkerman and are available in sizes 20-44" OD. They offer the customer more power to the cutter face and increase the bore size by reversing the augers and casing and pushing the spoils to the reception shaft. Features independent drives for rotation and spoil removal. Powered Cutter Heads Spec Sheet
	Cutter Head with Integral Swivel When using this unique upsizing tool, contractors have an option above and beyond the reaming head for difficult ground conditions. While versatile in many applications, contractors using the Cutter Head with Integral Swivel with an auger bore rig will especially realize its benefits.
	GBM Support Akkerman offers a complete line of accessory equipment and for our products to allow our customers to be able to bid on a wide range of jobs and get the most out of their Akkerman equipment investment. Additionally, we maintain a large spare parts inventory to provide the fastest possible delivery of desired items.