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Solid Carbide Deep Hole Drills : BLD-94 L/D=30

PRODUCT CODE DRILL DIA FLUTE LENGTH OVERALL LENGTH SHANK LENGTH SHANK DIA
D1 L2 L1 L3 D2
BLD-94-030 3.0 100 140 36 6.0
BLD-94-035 3.5 136 176 36 6.0
BLD-94-040 4.0 136 176 36 6.0
BLD-94-045 4.5 168 208 36 6.0
BLD-94-050 5.0 168 208 36 6.0
BLD-94-055 5.5 200 240 36 6.0
BLD-94-060 6.0 200 240 36 6.0
BLD-94-065 6.5 232 272 36 8.0
BLD-94-070 7.0 232 272 36 8.0
BLD-94-075 7.5 263 303 36 8.0
BLD-94-080 8.0 263 303 36 8.0
BLD-94-085 8.5 295 339 40 10.0
BLD-94-090 9.0 295 339 40 10.0
BLD-94-095 9.5 327 371 40 10.0
BLD-94-100 10.0 327 371 40 10.0

All Dimensions in MM

PROCEDURE :

  • Machine a pilot hole with an m7 toleranced series drill to a minimum pilot depth of 1 to 1.5 x D.
  • Enter the pilot hole at a speed of approx. 300 RPM, and with a feed rate of approx. 19 - 20 IPM
  • Start high coolant pressure and increase RPM.
  • Continuous drilling to complete hole depth without peck cycle.
  • For through holes with oblique exit, reduce the feed rate to 40% approx. 1 mm prior to break-through.
  • After reaching hole depth reduce machine spindle RPM and withdraw.

Also offered on request in :

  • Inches sizes and intermediate sizes.
  • Specific tolerances.
  • Drill point geometry to suit application.
  • Flute design to suit application.
  • Special coatings to enhance tool life.
  • Special shank (Weldon, whistle notch etc.)