DICT.TW Dictionary Taiwan

 head·stock /ˈhɛdˌstɑk/
 主軸承

 Head·stock n. Mach. A part (usually separate from the bed or frame) for supporting some of the principal working parts of a machine; as: (a) The part of a lathe that holds the revolving spindle and its attachments; -- also called poppet head, the opposite corresponding part being called a tailstock. (b) The part of a planing machine that supports the cutter, etc.
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 headstock
      n : the stationary support in a machine or power tool that
          supports and drives a revolving part (as a chuck or the
          spindle on a lathe)