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Carbide Drill

Carbide Micro drill

We have normal size carbide drills in stock,also produce as customized.

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Description
EJ Carbide offers carbide drill bit,diameter from 0.02 mm to 25mm as customers' needs.

Carbide Micro Drill Bit
Materials:     Solid Carbide(Tungsten Steel)
Helix Angle:     30°, 35° or as customer's choice
Point Angle:     130°,135°,140° or as customer's choice
Dimensions:     Diameter 0.5mm to 3.5mm

Features:
1.Precision machining by high accurate facility
2.Highly wear-resistant grade
3.Excellent surface finish for superior chip evacuation
4.First choice for drilling of PCB,circuit board,stainless steel,mold,plastic etc

Application:
1. PCB, normal FR-4, CEM-3 boards, environmental protection board, SMT, CNC, molds, plastic, stainless steel and precision hardware processing;
2. Circuit board, carbon fiber, composite board, and so on.

Dimensions for carbide micro drill bit (mm):
Code D1             D                 L               L1               Angle      
EY17-0050 0.5 0.5 38 10 140°
EY17-0060 0.6 0.6 38 10 140°
EY17-0070 0.7 0.7 38 10 140°
EY17-0080 0.8 0.8 38 10 140°
EY17-0090 0.9 0.9 38 10 140°
EY17-0100 1.0 1.0 38 12 140°
EY17-0110 1.1 1.1 38 12 140°
EY17-0120 1.2 1.2 38 12 140°
EY17-0130 1.3 1.3 38 15 140°
EY17-0140 1.4 1.4 38 15 140°
EY17-0150 1.5 1.5 38 15 140°
EY17-0160 1.6 1.6 38 18 140°
EY17-0170 1.7 1.7 38 18 140°
EY17-0180 1.8 1.8 38 18 140°
EY17-0190 1.9 1.9 38 18 140°
EY17-0200 2.0 2.0 38 18 140°
Why choose tungsten carbide as micro drill’s raw material:
carbide micro drill bit
carbide drill ,Shank diameter less than 3.175mm (or cutting length less than 1mm) , commonly referred to as carbide micro-drill. For the micro-drilling exhibit high efficiency in use, we must consider a number of factors: such as the factors of the drill itself, processing parameters, hole depth,  integrity of the installation and structure of workpiece …

It’s well known, the larger the high helix drill’s ratio of the length and diameter, the greater the tends of bending.reduce that ratio the bending force can be reduced also,thus avoid breaking drill and aperture error increase.deep hole require a large L/D ratio.in normal,hole depth more than three times of diameter it’s deep hole,while hole depth of micro-drill always over this limit.

With drill’s diameter decrease and brittleness increase,flexure become a root for many problems.to control the brittleness of drill, must weigh hardness and strength .

Normally,high speed steel drill allow a certain deflection and be able to bending force,but,these elastic deformation performance and low hardness make a low wear resistance,thus limit the cutting tool’s service life .however ,tungsten carbide with high stiffness and hardness ,therefore extend tool’s life ,and provide high machining precision.the high wear resistance feature of tungsten carbide drill make a three times speed compare to HSS drill,and also a increasing service life.meanwhile , the high stiffness of tungsten carbide helps correct positioning and keep hole size .


We offer a wide range of drills, including solid carbide drills,high speed steel drill bit,high cobalt twist drill,micro drills, flat bottom drills,deep hole drills,PCB drill bit and drills for specific materials like aluminum, steel, stainless steels, irons, and other materials.


Why choose EJ Carbide ?
why choose ej carbide to buy carbide micro drill

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