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rotary boring

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rotary boring [′rōd·ə·rē ′bȯr·iŋ]
(mechanical engineering)
A system of boring in which rock penetration is achieved by the rotation of the hollow cutting tool.


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After more than 5 years of work, rotary boring tools can now handle bores as small as 70 mm, and 40 mm bores will be possible in the future.
Boring tool The Zinner 560 rotary boring system reduces cutting time and gives a 40% reduction in required horsepower over the power needed with conventional drills.
 
 
 
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