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June 2014 - P250D Power Pack

pilot tube lubricaton pumpBrownsdale, MN – June 2, 2014 – New to the market, the robust P250D power pack provides plenty of hydraulic power to operate the GBM 4815A jacking frame and larger diameter GBM tooling, while incorporating many ease of use and safety features.

TThe P250D houses a 250HP (186 kW) engine to match the hydraulic requirements of our largest jacking frame with the engine supply to install up to 48-in. OD (1,219 mm) pipe. The P250D’s six-cylinder diesel engine is liquid-cooled. The 25 gpm (95L/min) cooling circuit makes efficient use of hydraulic oil, maintains low operating temperatures and requires less horsepower (kilowatts). Three load sense, variable piston pumps offer independent operation for jacking, rotation and PCH operation at 0-60 gpm (0-227L/min). The engine’s electric block heater assists starting in cold climates.

The P250D’s power unit assembly is fully operational inside or outside of the container.  The power unit assembly can be extended from the container for optimal access to the engine, hose reels, pumps, fluid reservoirs and gauges. With the doors open, operators can walk through to the pilot tube accessories storage area on the container’s wall. The assembly includes 50-ft. (15 m) hydraulic hose sets for jacking frame connections along with a remote control pendant for in-shaft operation.

This P250D is the first of its kind to introduce universal, hydraulic quick disconnect hose connections. The disconnect collars house bearings so the hose can swivel under load pressure, therefore eliminating twisting. The quick disconnects reduce set-up time by 70% due to their unique two-turn/two-start thread connection.

The P250D includes numerous safety features. An e-stop control button is easily accessible from the operational end of the unit and when on, is illuminated for clear visibility in low light. Interior lights shine on the engine, oil reservoir and main doors. The main pump valve features a safety switch, allowing for engine start-up only when the valve is in the full open position. When in operation with the doors closed, the engine’s 70dB level meets tier III standards. Air for the radiator is drawn from the top of the unit forcing engine noise upwards, which also contributes to the unit’s quiet operation.

The P250D is compatible with all GBM jacking frames and accessory tooling.

April 2014 - 1325G Pilot Tube Lubrication Pump

pilot tube lubricaton pumpBrownsdale, MN – April 8, 2014 – Successful guided auger boring contractors know that their bore’s accuracy depends on competent pilot tube steering coupled with ground appropriate lubrication. The 1325G Pilot Tube Lubrication Pump enhances these skills while serving as an invaluable, multi-faceted tool.

The 325 gal (1,230 L) tank offers 2,000 psi (13,790 kPa) of pressure at 7 gpm (26.5L/min) of pump flow, providing enough fluid capacity for the average 400-ft. (122m) bore. The tank can be filled with liquid-based polymers to supply lubrication to the pilot tube string or with water for pressure cleaning operations.

The 1325G design is simple and self-contained. Power is provided via direct-drive from engine to pump through a gearbox. The pump’s in-tank agitation quickly and evenly mixes liquid-based polymers and prevents fluid settlement. A relief valve limits the pump’s pressures as necessary. The electric start Kohler engine offers 14HP (10 kW) at 3,600 rpm’s with a 1.8 gal (7L) gas tank capacity. The empty tank assembly weight is just under 1,000 lbs. (454 kg), making the unit highly portable to and on the project site. The unit’s overall dimensions are 52-in. (h) x 89-in. (l) x 50-in. (w), intended to make container storage possible in colder climates.

The 1325G Pilot Tube Lubrication Pump design integrates several safety features. The stepped platform makes it easy for operators to access or fill the 325 gal (L) tank. The battery is located inside a plastic housing to eliminate contact with operators. The lack of moving parts in the tank makes for safe interior access.

For More Information


Akkerman | 58256 266th Street, Brownsdale, MN 55918 | USA | +1 (800) 533 0386

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