A deep hole boring head is provided which is capable of rotating about a
central axis, a body whose front part has at least one cutting edge
followed by a recess which leads to a duct inside the body, this duct
allowing the chips formed during the boring to be cleared away rearwards,
and includes at a front end thereof and at a center portion thereof a
pilot drill bit capable of guiding the head during boring. Use for the
boring of a production piece is made of titanium, the ratio L/D between
the depth L of the hole bored and the diameter D of the latter being
greater than or equal to 10, and the diameter D being greater than or
equal to 65 mm.