BB Countersink Drill Tipped Carbide 90 Degree

BB Brazing Countersink Cutter

-In order to ensure the firmness of the drill bit, we adopted a brazing method to weld carbide inserts. In this way, the drill bit can process harder metal (compared with HSS countersinks).But this will make the appearance of the drill bit not good-looking. We hope you don't mind.

-Because the cutting edge of carbide material is very crisp, them machining environment needs to be stable to reduce beating.

-It performs well when machining Non-ferrous metals, cast iron, General steel, alloy steel, etc.

-Suitable for low rotating speed and low cutting allowance.

☆High quality tungsten steel material is chosen for its sturdiness and high hardness. After heat treatment and quenching, thus making its drilling and chip removal stable, ensuring long-term use and high hardness material cutting, strong versatility and anti-shattering.

☆Adopt brass brazing technology, which makes the whole alloy and the drill body fused together, welded firmly so as not to fall off easily and play an excellent fixing role. The edge enclosure is finely ground, which helps to improve the precision of drilling by making it smooth.

Dimensions：
d16*12D*80L dmin=8~9mm
d20*12D*80L dmin=9~10mm
d25*12D*80L dmin=9~10mm
d30*16D*90L dmin=11~12mm
d40*16D*100L dmin=13~14mm

Recommended RPM is about 200~300
Feed：
K: 0.15~0.25
N: 0.25~0.35
M: 0.08~0.12
P: 0.25~0.4

Works and reviews of clients (Thanks!）

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