Invention Grant
US07992657B2 Earth bit having a wear ring 有权
地脚有磨损环

Earth bit having a wear ring
Abstract:
An earth bit includes a cutting cone rotatably mounted to a lug with a journal. A sealing member is sealingly engaged with the cutting cone and a wear ring carried by the lug. The wear ring is dynamically engaged with the first sealing member and statically engaged with the lug.
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