Rock drilling machine and axial bearing module
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United States of America Patent
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Jan 28, 2014
Grant Date -
Sep 15, 2011
app pub date -
Nov 17, 2009
filing date -
Nov 20, 2008
priority date (Note) -
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Abstract
A rock drilling machine and an axial bearing module. The rock drilling machine is equipped with an axial bearing having at least one axial piston for axially positioning a drill shank and for damping stress pulses returning from the rock. The axial bearing includes a module that is detachable in one piece from one installation direction. The axial bearing module includes the required pressure medium channels, seals, bearing surfaces, and a module frame having at least bearing housing in connection therewith.
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