*mydirectindustry

PRH Kit

Product catalog summary

Overview: The document details the specifications and operational procedures for the Powered Reaming Head (PRH) used in guided boring methods. It is designed to work in 96” minimum ID or trenchbox shafts and is controlled by a GBM operator in the launch shaft.

Specifications:

Assembly Length: PRH 14: 62 in. (1,575 mm), PRH 16: 63 in. (1,600 mm), PRH 20: 64 in. (1,626 mm). Two sections may be launched separately.
Diameter: PRH 14: 15 in. (381 mm), PRH 16: 17 in. (432 mm), PRH 20: 21 in. (533 mm).
Drive System: Auger Drive with a max torque of 10,500 ft/lbs (14,238 N•m) and max speed of 50 rpm.
Weight: Front Section: PRH 14: 700 lbs. (318 kg), PRH 16: 750 lbs. (340 kg), PRH 20: 900 lbs. (408 kg). Rear Section: PRH 14: 600 lbs. (272 kg), PRH 16: 850 lbs. (386 kg), PRH 20: 900 lbs. (408 kg).

Features:

The PRH is an upsizing kit configurable to 14”, 16”, and 20” OD. Custom sizes are available upon request.
Separate jetting lines on reaming head arms and lubrication lines on the rear section reduce jacking forces.
Compatible with standard jacking frames and P100Q and P150Q power units.
Spoils are discharged to the reception shaft, and product pipe length is dependent on shaft size.

Guided Boring Method with Powered Reaming Head:

Step 1: Precise installation of pilot tubes on line and grade.
Step 2: Advancing thrust casings along the pilot tube path with a reaming head or upsizing tool.
Step 3: Installation of product pipe with the powered reaming head to increase bore diameter to match the product pipe.

Catalog excerpts

GUIDED BORING METHOD WITH POWERED REAMING HEAD Step 1: PRECISE INSTALLATION OF PILOT TUBES The first step is the installation of the pilot tube on line and grade. Step 2: ADVANCING THRUST CASINGS ALONG PILOT TUBE PATH The second step is to follow the pilot tube with a reaming head or other upsizing tool and standard 11” OD thrust casings. Step 3: INSTALLATION OF PRODUCT PIPE WITH POWERED REAMING HEAD In the third step, the powered reaming head follows the thrust casings to increase the bore to match the product pipe diameter. Lubrication Ports (3) On Rear Section Jetting Ports (2) On Reaming...

Open the catalog to page 2

PRH Kit

PRH Kit

Catalog excerpts

All Akkerman catalogs and technical brochures