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LZQ Tools

Counter Bore Drill


Super-hard processing of professional, special, non-standard, special shaped and new products with any kind, any shape and tolerance. If you have any similar inquiry, please fax us your address or call us to get samples in the photos and related catalogue for your reference (only a small amount is allowed).

We keep around RMB 20~30 Million turnover stock articles such as raw material, semi-products, finished products in an ordinary year, we are capable to produce according to drawing or sample provided by the customer, so as to present you a favourable cost-performance ratio…Welcome to visit our factory.

Product Details

  • Machining of high hardness material, excellent chip discharge, low noise, high efficiency.
  • With wide bottom-edge chip flute, it can machine inclined plane
  • With many flute length and soft overall length, it can make high-speed machining.
  • With bottom edge facing centre, it can regrind and cut up to top grade smooth.
  • With long and short bottom edge (with 2 flutes facing centre), it can be applied in multi-purpose machining.


It can machine various sizes and specification and inclinationθ°, helical angles α°, concentricity⊙≤0.005mm.  Super micro-grain diamond tungsten steel, extensively applied, it can be applied in medium speed cutting and finish cutting of various materials with HRC≤28°. It has excellent impact resistance and general wear resistance and has extensive application. Generally, it is applied for thicker cutting, discontinuous cutting and bad part fixture. After being coated, it has a better result, can machine various materials of HRC50°. Comparing with ISOK20&general tungsten steel, it has 1-2 times lifetime and excellent wear resistance

A more aggressive angle, such as 90 degrees, is suited for very soft plastics and other materials; it would wear rapidly in hard materials. Such a bit is generally self-starting and can cut very quickly. A shallower angle, such as 150 degrees, is suited for drilling steels and other tougher materials. This style of bit requires a starter hole but does not bind or suffer premature wear so long as a suitable feed rate is used.

Multi-picture display

  • Counter Bore Drill
  • Counter Bore Drill

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