Drill Bits

DRILL BIT RANGE

Description: 3way Reg Bit.jpg3-WAY REGULAR BITS

  • 2 15/16” – 4” N ROD PIN
  • 90MM – 5 ½” 2 3/8” API REGULAR PIN
  • 4 ¾” – 6 ½” 2 7/8” API REGULAR PIN
  • 5 ½” – 11” 3 ½” API REGULAR PIN

3-WAY REGULAR HEAVY DUTY STEP:

  • 10¾”     –   15”     3 ½” API REGULAR PIN
  • 7 7/8”     –   13 ¾”     4 ½” API REGULAR PIN
  • 290mm  –   16”        6 5/8”   API REGULAR PIN

Description: 3way Reg Bit.jpg


3-WAY HEAVY DUTY
CHEVRON BITS

  • 3 ½” – 5” 2 3/8” API REGULAR PIN
  • 4 ¾” – 5 ½” 2 7/8” API REGULAR PIN
  • 5 ¼” – 5 ¾” 3 ½” API REGULAR PIN

3-WAY EXTRA HEAVY DUTY CHEVRON:

  • 5 7/8” – 9 7/8” 3 ½” API REGULAR PIN
  • 7 7/8” – 9”4 ½” API REGULAR PIN
  • 10 5/8”6 5/8” API REGULAR PIN

Description: Left 3way Reg Bit.jpg


3-WAY REGULAR LEFT
HAND ROTATION

  • 76mmT45 THREAD
  • 175mmT51 THREAD
  • 4” – 6 ¼”T51 THREAD

3-WAY LEFT HAND ROTATION CHEVRON:

  • 4” – 6” T51 THREAD


Description: 3way Reg Bit.jpg


4-WAY REGULAR BITS

  • 5 ½” – 12” 3 ½” API REGULAR PIN
  • 7 7/8” 4 ½” API REGULAR PIN
  • 5 ¼” – 5 ¾” 3 ½” API REGULAR PIN

4-WAY REGULAR HEAVY DUTY STEP:

  • 8” – 13” 3 ½” API REGULAR PIN
  • 7 7/8” – 17”4 ½” API REGULAR PIN
  • 290mm6 5/8” API REGULAR PIN
  • 9 5/8” – 24”6 5/8” API REGULAR PIN

Description: 4way chev Bit.jpg


4-WAY HEAVY DUTY
CHEVRON BITS

  • 110mm2 3/8” API REGULAR PIN
  • 3 7/8” – 5” 2 3/8” API REGULAR PIN
  • 5”2 7/8” API REGULAR PIN
  • 5 ½” – 12”3 ½” API REGULAR PIN

4-WAY EXTRA HEAVY DUTY CHEVRON:

  • 7 ½” – 10”4 ½” API REGULAR PIN
  • 9 7/8” – 16”6 5/8” API REGULAR PIN


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SPIRAL AUGERS

  • 3” – 5”1 1/8” HEX
  • 4” – 5”1 ½” HEXspan>
  • 4 ¾” – 6”1 ¾” HEX

SPIRAL AUGER – RB TEETH:

  • 3 ¼” – 5”1 1/8” HEX
  • 4 ½” – 5”1 ½” HEX
  • 6″1 ¾” HEX


Description: starter Bit.jpg




STARTER TYPE BIT

  • 5 1/8” – 8”MAYHEW REGULAR BOX


Description: 2 prong Bit.jpg





2 PRONG AUGER BIT

  • 3 ¼” – 4”1 1/8” HEX PIN
  • 5”1 ½” HEX PIN



Description: starter Bit.jpg



STEEL TOOTH ROTARY BITS

Mild tooth or tungsten carbide inserts. Sizes from 3 ¾” to 28″

SOFT

  • Used on loose of low compressive strength formations
    where fast penetration is obtainable. Features long, hard
    teeth and maximum cone offset for fastest drilling.

MEDIUM

  • Drills a variety of medium to hard or ‘streaky’ formations.
    Provides ample gage wear protection, yet allows fast
    penetration rates.

HARD

  • Drills abrasive formation with compressive strengths.
    Gage teeth and minimum cone offset provides resistance
    to gage rounding. penetration rates.


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BUCKET BITS

Heavy duty drilling bucket equipped with
all-purpose insert teeth. Sizes from 16″ to 48″



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Heavy Duty Auger Heads

Threaded or box connection. Sizes from 12″ to 26″



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CUSTOMIZED BITS, AUGERS AND BUCKETS

Bournedrill also manufactures custom bits to customer’s
specification upon request.