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GUIDED BORING

TOOLING ESSENTIALS

Steering Head Kit

Complete Assembly

The Steering Head Kit includes 30° 5-in. and 45° steering heads to displace various types of soil, a steering head adapter, steering head inner tube, target holder and an air and fluid adapter. The 30° 5.5-in., 30° 4-in., and bullet steering heads are also available for specific ground conditions.

Thrust Casing Assembly

11-in., 16-in., and 16-in. HD

Thrust Casing Assemblies are available in 11-in. and 16-in. OD and connect with retaining clips. Thrust Casing Assemblies are available quantities of 20, 11-in. or 9, 16-in. casing and auger pairs and provided in a convenient wire basket.

Rock Drill Adapter (RDA)

Adapter to TriHawk® Drill Bits

The Rock Drill Adapter (RDA) provides a means for rock pilot tube boring on line and grade in rock formations up to 18,000 psi with a cutting diameter of 5.75-in. The RDA features a bolt-less, square drive spline to accept TriHawk® I, III, IV, and V drill bits.

Pilot Tube Racks

12, 30-in., 30-ft
40, 30-in., 100-ft.

Dual-Wall Pilot Tubes allow for fluid passage to the steering head through an outside ring while maintaining visibility of the illuminated target in the inner tube for steering control. The vertical racks are ideal for restricted shafts, have a lifting bar and holds 12, 30-in. pilot tubes, enough for a 30-ft. installation along with caps and plugs. The horizontal pilot tube rack holds 100-ft. or 40 pilot tubes along with caps and plugs. The horizontal orientation of the rack offers expedited pilot tube pre-installation preparation and post-installation maintenance.

PIPE INCREASE TOOLING

Powered Cutter Heads (PCHs)

20-30.5-in. OD

Powered Cutter Heads (PCHs) increase the bore to match the pipe diameter and feature two independent hydraulic drive systems for the cutter bit and augers for conveying soil to the reception shaft. Standard PCHs are available in sizes 20 - 30.5-in. OD with increase kits for 36-in. OD pipe.

Powered Cutter Heads (PCHs)

36-44-in. OD

Powered Cutter Heads (PCHs) increase the bore to match the pipe diameter and feature two independent hydraulic drive systems for the cutter bit and augers for conveying soil to the reception shaft. Standard PCHs are available in sizes 30 - 44-in. OD with increase kits for up to 48-in. OD pipe.

Powered Reaming Heads (PRHs)

14-48-in. OD

Powered Reaming Heads (PRHs) increase the bore diameter and reverse the augers and casing to force soil to the reception shaft while lubricating soils to reduce jacking forces. PRHs can be configured from 14 to 48-in. OD with available auger drive torque from 10,500 - 26,000 ft-lbs.

Rock Boring Unit (RBU)

24, 30, 36 and 42-in.

The Rock Boring Unit (RBU) 24, 30, 36 and 42-in. is used for up to 18,000 psi UCS when guided with pilot tubes led by a Rock Drill Adapter (RDA) and TriHawk® drill bit and 25,000 psi UCS unguided rock boring with the full-face disc cutter insert. The RBU pairs with the GBM 4800 Series Jacking Frame system or guided auger boring application.

Integral Bearing Swivel Cutter

11 and 16-in. OD

The Integral Bearing Swivel Cutter is an upsizing tool between the pilot tube adapter and the lead 11 or 16-in. thrust casing. It is used in ground conditions above 35 blow count and functions to keep the pilot tubes stationary while the cutter bit with fluid ports rotates and releases lubrication to reduce cutting torque.

4800 SERIES JACKING FRAME TOOLING

High Torque Casing Adapter

Up to 48-in. OD

The High Torque Casing Adapter (HTCA) - 48 is used with the GBM 4800 Series jacking frame for up to 88,000 ft-lbs. of torque and 530,000 lbs. of jacking force for auger boring applications. The HTCA - 48 is positioned between the jacking frame gear box and lead casing to adapt up to 48-in. steel casing pipe while the two dirt paddles handle the soil volume.

Augering Adapter Assembly

Up to 36-in. Steel Casing

The Augering Adapter Assembly provides a means for soil discharge when installing up to 36-in. steel casing pipe with a GBM 4800 Series Jacking Frame. Up to 26,000 ft.-lbs. of auger torque drive takes place through the gear box of the jacking frame and soil emerges from the discharge chute.

Guide Rod Swivel (GRS) 50

24, 30, 36 and 42-in. Steel Casing

The Guide Rod Swivel (GRS-50) family of high thrust bearing upsizing tools keep pilot tubes stationary and are able to withstand up to fifty tons of continuous thrust loads on guided boring, guided auger boring, and soft rock pilot tube projects for 24, 30, 36, and 42-in. steel casing pipe installations. It is used during guided auger boring to follow the Rock Drill Adapter with TriHawk® drill bit tooling in weathered rock conditions. On projects with space constraints, the GRS-50 24 and 30-in. are compatible with the GBM 4800 Series Jacking Frame with an HTCA 48.

GUIDED STEEL CASING TOOLING

Guide Rod Swivel (GRS) 50

24, 30, 36 and 42-in. Steel Casing

The Guide Rod Swivel (GRS-50) family of high thrust bearing upsizing tools keep pilot tubes stationary and are able to withstand up to fifty tons of continuous thrust loads on guided boring, guided auger boring, and soft rock pilot tube projects for 24, 30, 36, and 42-in. steel casing pipe installations. It is used during guided auger boring to follow the Rock Drill Adapter with TriHawk® drill bit tooling in weathered rock conditions. On projects with space constraints, the GRS-50 24 and 30-in. are compatible with the GBM 4800 Series Jacking Frame with an HTCA 48.

Guide Rod Swivel (GRS) 25

Up to 24-in. and 200-ft.

The Guide Rod Swivel (GRS) 25 is used between the pilot tube adapter and cutter bit and able to withstand up to twenty five tons of continuous thrust loads on guided auger boring projects. It connects with a 3-in. hex and functions to maintain pilot tube line and grade for the cutter bit while preventing rotation of the pilot tubes for steel casing installations under 200-ft. lengths and 24-in.

GBM Bearing Swivel Assembly

24-30-in. and 200-400-ft.

The GBM Bearing Swivel Assembly is used between the pilot tube adapter and the cutter bit and able to withstand up to fifty tons of continuous thrust loads on guided auger boring projects. It connects with a 3-in. hex and functions to maintain pilot tube line and grade for the cutter bit while preventing rotation of the pilot tubes for 24-30-in. diameter steel casing installations and lengths ranging from 200-400-ft.

Weld-On Reaming Heads (WORHs)

12-72-in. Steel Casing

Weld-On Reaming Heads (WORHs) are used to increase to the steel casing diameter in one or two stages from 12-72-in. in soft, non-compacted ground, where the casing can be easily advanced with the thrust of the auger boring machine. WORHs feature arms that are flush with the inside diameter of the steel casing to allow for correct positioning of the cutter bit and standard soil removal from the pipeline with augers while creating a 1.5-inch overcut.