guide ring
guide ring
[′gīd ‚riŋ] (mining engineering)
A longitudinally grooved, annular ring made almost full borehole size, which is fitted to an extension coupling between the core barrel and the first drill rod.
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References in periodicals archive
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Fuji recently unveiled this latest ceramic guide ring, which testing shows is smoother and less abrasive than even premium silicon carbide, or SiC.
They are equipped with a guide ring, giving extremely precise roller guiding, and optimised solid brass retainers, which carry higher loads and offer very high wear resistance.
Drill projection length can be adjusted by handrotating the knurled guide ring on the outside of the SDM Toolholder.
For a copy of the guide ring 0808 808 2020 or visit www.macmillan.org.uk
The new water-saving guide ring conserves water and thus extends the floor area to be covered on a single filling by channelling the water and detergent directly between the brush bristles.
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