Cased Augers & Heads
Temporary Thrust Casing and Auger assemblies are positioned directly behind a reaming head, which follows the pilot tubes. The reaming head increases the bore diameter, and the augers transport spoil to the launch shaft.
The Integral Bearing Swivel Cutter is an upsizing tool between the pilot tube adapter and the lead thrust casing. It is used in ground conditions above 35 blow count and functions to keep the pilot tubes stationary. Simultaneously, the cutter bit rotates to excavate the soil, and fluid ports release lubrication to reduce cutting torque. Integral Bearing Swivel Cutters are available in standard and HD models to match the thrust casing assemblies.
FEATURES:
Thrust Casing & Auger Assemblies
- Available in 11‑in OD, 16‑in OD standard, and 16‑in OD heavy‑duty versions.
- Casings connect using retaining clips.
- Supplied in a convenient wire basket for easy transport.
Integral Bearing Swivel Cutter
- Mates to the lead thrust casing assembly.
- Used in ground conditions above 35 blow count.
- Absorbs auger rotation to keep the pilot tube string stationary.
- Cutter bit tooling excavates the ground.
- Cutter bit fluid ports provide lubrication to reduce cutting torque.
SPECIFICATIONS
Print This PageThrust Casing and Auger Assembly
| Model | Length | Max. Thrust / Torque | Weight Ea. |
|---|---|---|---|
| 11-in. | 1 m | 100 ton / 10,500 ft‐lb | 265 lbs. |
| 16-in. | 1 m | 100 ton / 10,500 ft‐lb | 400 lbs. |
| 16-in. HD | 60-in. | 200 ton / 21,000 ft‐lb | 570 lbs. |
| 11-in. SCH | 43-in. | 70 ton / 10,500 ft-lbf | 700 lbs. |
| 16-in. SCH | 43-in. | 100 ton / 21,000 ft-lbf | 1,200 lbs. |
Testimonials
I have been working in the underground construction for the past 40 years. In the last 25 years I’ve been involved with all kinds of tunneling operations. Hand mine tunnels using jacking equipment, wood box tunnels dug by hand. But my favorite type of tunneling is MTBM’s. I have been working with and around Akkerman tunnel machines from 120” wheeled machines all the way down to the 48” SC tunnel machine. We’ve done successful runs in ranges from 200’ to 800’ with no problems. In all my years of tunneling we have never had a failure of equipment to cause us any down time. When we have had issues with mechanical parts or service needed Akkerman can usually get you the parts pretty quickly and technicians can get on a plane and help you out also. The team at Akkerman is always ready to answer any questions or problems you may have. They can help you decide on what equipment might work best for your particular job needs. I’ve also been involved with the GBM equipment we have run 32” PCH installing 30” Hobas pipe and also 44” PCH installing 42” Hobas pipe. We have had great success with GBM runs up to 500’ in length. Our last purchase was a new 5200 series jacking frame and 60” series 2 MTBM. We chose Akkerman for this equipment for our past experience and the fact they are made in the USA and can service us quickly. It truly has been great working with Akkerman.