eccentric overburden drilling

eccentric overburden drilling Tubex XL 165 used for Casing Advancement Systems
ODS SYSTEM
Overburden Drilling system
Roschen's ODS system is a proven two-part Eccentric Overburden Drilling system designed for the simultaneous drilling and casing of holes, through unstable ground conditions.
Key Features:
. Available for casing sizes from 114mm (4 1/2") to 273mm (10¾") diameter Simple two-part design for better transfer of energy to Bit face
. Optimal drilling performance in unstable ground conditions
. The Eccentric Bit can be easily and quickly removed for replacement or refurbishment
. "open and closed" locking arrangement inside the bit holder so nothing can prevent the Eccentric Bit from closing
. The ODS Bit has a positive pilot design which helps guide the Eccentric Bit and produce a straighter hole

* Complete system comprises Bit Holder, Eccentric Bit, and Locking Pins. Other shank styles available on request
The ODS is a two part eccentric overburden drilling system designed for the simultaneous installation of casings to support unstable ground conditions.
The bit holder is fitted into the hammer in the same way as a conventional button bit would be.
The eccentric button bit is locked into the bit holder by means of a double 'Seloc' pin arrangement which can be removed when the bit needs either regrinding or replacing.
ROSCHEN only supply threaded casings but the system can also be used with less expensive welded casings when the casing is required to be left in the hole.
When the ODS system has been drilled to the required depth, the eccentric bit can be closed to its concentric position by pulling up against the casing shoe and counter rotating 180 degrees, and the complete system withdrawn from the casing.
If required, it is then possible to drill on into solid rock using a conventional button bit of a diameter equal to the system size.
It is important to make sure that a stabiliser of the correct dimensions is positioned directly behind the hammer.
ROSCHEN manufactures a range of bit holders, eccentric bits, casing shoes and stabilisers, to accompany our ODS drilling systems. For more product details, please consult our technical sales brochures or contact our sales team for assistance.

 ROSCHEN GROUP

ROSCHEN Group has the world class advanced equipment like 12000 tons forging, metal processing plant, heat treatment workshop, numerical control plant, Advanced five-axis machining center, etc. professional technical and skilled team to ensure mining, mineral tools, equipment products quality stable and reliable.

ROSCHEN Group Limited is a manufactory with years of research and development for the mining, mineral tools, equipment. We are capability to produce high performance world class products and control excellent quality. Our main product includes tricone bit, diamond core bits, drill pipe, core barrel, TCI tricone bit, mill tooth tricone bit, RC hammer, DTH bit, etc.

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