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PCH 20-28.5"

PCH 20-28.5"

Product catalog summary

Overview: The document details the specifications and operational procedures for the GBM_PCH, FA42850F, a powered cutter head designed for use in trenchless construction methods. It is suitable for 96” minimum ID or trenchbox shafts and features independent drives for rotation and spoil removal, controlled by an operator in the launch shaft.

Specifications:

Assembly Length: 72 inches (1,829 mm), with the possibility of launching two sections separately.
Diameter Options: PCH 20 (20 in./508 mm), PCH 22.5 (22.5 in./572 mm), PCH 28.5 (28.5 in./724 mm) with an overcut of 1.5 inches (38 mm).
Weight: Varies by model, with the front section ranging from 1,800 lbs (816.5 kg) to 3,000 lbs (1,361 kg) and the rear section from 900 lbs (408 kg) to 1,700 lbs (771 kg).
Drive System: Auger drive with a maximum torque of 10,500 ft-lbs (14,238 N•m) and a maximum speed of 50 rpm. Cutterface power ranges from 32 HP (24 kW) to 61 HP (45.5 kW) depending on the model.

Features:

Upsizing tools are available for different product pipe sizes, with increaser kits to accommodate larger diameters.
Separate lubrication lines reduce jacking forces and ease spoil removal.
Compatible with standard jacking frames and power units with minimal modifications.
Spoils are discharged to the reception shaft, and product pipe length is dependent on shaft size.

Guided Boring Method with Powered Cutter Head:

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

Catalog excerpts

GUIDED BORING METHOD WITH POWERED CUTTER 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 thrust casings. Step 3: INSTALLATION OF PRODUCT PIPE WITH POWERED CUTTER HEAD In the third step, the powered cutter head follows the thrust casings to increase the bore to match the product pipe diameter. Powered Cutter Head In Launch Position Spoils Discharged In Reception Shaft Drive...

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PCH 20-28.5"

PCH 20-28.5"

Catalog excerpts

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