| 摘要 |
An augur hammer is provided to easily change a bit even though abrasion or damage caused by frequent excavation. An augur hammer comprises a hammer including a casing in a cylinder form, an air pressure unit mounted inside the casing, and a hammer bit mounted at a longitudinal portion by a connection member, and a casing bit(340) in a cylinder form to be attached and detached by passing through the hammer bit mounted on the casing, where a thread(342) is formed in an inner surface to be fastened with an outer surface of the casing.
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