Powered Cutting Heads (PCH / PRH) - Akkerman

Equipment

Akkerman Inc.

Akkerman’s Powered Cutting Heads (PCH) and Powered Reaming Heads (PRH) set the standard for pilot tube microtunneling. These powerful units increase the diameter of the bore to match the final product pipe while reversing the direction of the material discharge of the excavated material to the reception shaft in order to install any standard allowable jacking pipe suitable for the application.

Powered Cutting Heads (PCH) Features:
  • PCHs feature independent hydraulic drive systems that allow the GBM operator to independently control the speed and direction of both the cutterhead and augers.
  • High-Pressure Jetting nozzles are controlled by the operator to assist material transfer and cutting in cohesive ground conditions.
  • Pipe lubrication ports are plumbed into tail section to promote a stable borehole and reduced pressures.
  • Material discharged and reversed inside the plenum chamber creating a mechanical earth balance during excavation.
  • Increase kits are available to adapt to various jacking pipe diameters or types.
Powered Reaming Heads (PRH) Features:
  • PRH uses a powerful single hydraulic drive system to turn the cutterhead and auger string simultaneously. The drive system is bi-directional.
  • The augers and casings are connected to the PRH by reaming arms which promote an open transfer of excavated material to the augers.
  • Material discharge is reversed inside the plenum chamber sending excavated material to the reception shaft for removal.
  • High-Pressure Jetting nozzles are controlled by the operator to assist material transfer and cutting in cohesive ground conditions.
  • Pipe lubrication ports are plumbed into tail section to promote a stable borehole and reduced pressures.
  • PRH heads utilize a common drive and gearbox setup. The shield body can be built to match various jacking pipe diameters or types.

PCH 20
PCH 22.5
PCH 30.5
PCH 36
PCH 44
PRH Series II 10.5K Drive
PRH Series II 20K Drive
PRH Series II 26K Drive

Specifications
ModelBase DiameterCH HP /
Auger Torque
Weight (Drive)
PCH 2020 in.32 hp /
10,500 ft-lbf
1,800 lbs
PCH 22.522.5 in.48 hp /
10,500 ft-lbf
2,000 lbs
PCH 30.530.5 in.61 hp /
10,500 ft-lbf
2,200 lbs
PCH 3636 in.79 hp /
26,000 ft-lbf
4,300 lbs
PCH 444493 hp /
26,000 ft-lbf
6,500 lbs

*Skin Kits available on all diameters

Powered Reaming Heads

ModelDiameter RangeTorqueSpeed
PRH 10.514-20 in.10,500 ft-lbf40 rpm
PRH 2020-30 in.20,000 ft-lbf38 rpm
PRH 2630-48 in.26,000 ft-lbf26 rpm

Print This Page

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.

See What Our Clients Say

Tunneling