Widetop > Fully Ground Twist Drill Bits > DIN333 HSS Drill Bits Titanium Coated Straight Flute / Spiral Flute Centre drill bits
DIN333 HSS Drill Bits Titanium Coated Straight Flute / Spiral Flute Centre drill bits
DIN333 HSS Drill Bits Titanium Coated Straight Flute / Spiral Flute Centre drill bits

DIN333 HSS Drill Bits Titanium Coated Straight Flute / Spiral Flute Centre drill bits

  1. ISO866/ISO2540 HSS Center Drill bits

  2. Fully ground center drill bits

  3. Titanium coated surface for the drill bits

DIN333 HSS Drill Bits Titanium Coated Straight Flute / Spiral Flute Centre drill bits

  • Flute type :N

  • Material: high speed steel or high speed steel with cobalt

  • Surface treatment: bright finished or titanium coating

  • Size: 1mm~12.5mm


Feture of the center drill bits

  • Center drill bits are used with the lathe to drill a hole in the end of the work-piecefor mounting .

  • The drill bits are designed to drill a small diameter pilot hole with a 60 degree countersink .

  • Center drill bits are also used extensively with the milling machine to accurately start holes.

  • The hole locations can be dialed in using the milling machine's calibrated hand wheels, then the hole is started using the center drill.

  • The large diameter shank on the center drill holds the drill point right on center, Once the hole is started, the center drill is replaced with a drill of the desired diameter and the hole is finished.

  • It is imperative hat a cutting lubricant is used, and the center drill is backed off several times to prevent the tip from twisting off.

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Released on:2019-07-12 Updated on:2019-07-31

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