DTH-REC TECHNICAL BROCHURE

Product catalog summary

Technical Specification
The Robit® Overburden Eccentric System (DTH-REC) is engineered for reliable performance in overburden drilling conditions. It facilitates casing installation in various downward formations, preventing hole collapse and equipment loss. The system comprises a concentric pilot bit and a swing-out eccentric reamer, which expands the hole diameter to drive the casing down. Upon reaching the desired depth, the reamer retracts with reverse rotation, allowing the system to be reused while leaving the casing in place. This system is applicable in water well, geothermal drilling, micro piling, and dam and port projects worldwide.

Component Specifications
The document lists various components with item numbers, including guide devices, locking kits, reamers, pilot bits, and casing shoes. The complete system does not include casing shoes, which have specified wall thicknesses.

Locking Kit Components
The locking kit includes bearing balls, locking pins, spring pins, and pusher pins.

DTH-REC Series Specifications
The series includes different models with specifications for pipe diameter, pilot bit size, hammer size, and weight. The models range from DTH-REC 114,3/6 to DTH-REC 273/6,3, with varying dimensions and weights suitable for different drilling requirements.

Catalog excerpts

Robit Overburden Eccentric System For Cost-Effective Drilling in Variable Ground Conditions. DTH-REC TECHNICAL BROCHURE FURTHER. FASTER.

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DTH-REC TECHNICAL BROCHURE Technical Specification DTH-REC SERIES Robit® Overburden Eccentric System The new Robit® DTH-REC system is specially designed to offer a maximum reliability in overburden drilling conditions. This system enables driving the casing in all downward vertical directions/formations avoiding collapsing holes and lost equipment. DTH-REC system is a two-piece bit consisting of a concentric pilot bit and a swing-out eccentric reamer, which enlarges the hole’s diameter driving the casing down into the hole. When the required depth has been reached, a reverse rotation is applied...

Open the catalog to page 2

DTH-REC TECHNICAL BROCHURE

DTH-REC TECHNICAL BROCHURE

Catalog excerpts

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