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Small Cemented Carbide Milling Blanks PCB Drill Bits 8% Cobalt

Zhuzhou TGC Cemented Carbide Co.,Ltd.

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Address: Block B, building 4, Area B, Hi Tech New Makin Valley Xiangyuehuan Road, Tianyuan District, Zhuzhou, Hunan, China

Contact name:Ms Pan

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Small Cemented Carbide Milling Blanks PCB Drill Bits 8% Cobalt

Small Cemented Carbide Milling Blanks PCB Drill Bits 8% Cobalt
Country/Region china
City & Province zhuzhou hunan
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Product Details

Small PCB drills cemented carbide milling blanks with 8% Cobalt as the binder

 

Outer diameter: 3mm

Length: 40mm or as per required

Roughness: Ra 0.2 or Ra 0.05

Chamfer one side: 0.5*45°

 

GradeDensityT.R.SHardnessProperties & Applications
g/cm3N/mm2HV30
YU0814.5640001900Suitable for manufacturing micro-drills with a diameter less than 0.8mm for machining PCB. It is also suitable for manufacturing various kinds of solid cemented carbide tools for machining glass fiber, wood, plastics, paper and brass, Al alloy etc.

 

 

Regular size for small drills:

Diameter mmLength mm Diameter mmLength mm
DToleranceLTolerance DToleranceLTolerance
1.60+0/-0.006200/+0.5 10.00+0/-0.009500/+0.5
2.35300/+0.5 10.00700/+0.5
2.35450/+0.5 10.00720/+0.5
3.00600/+0.5 10.00750/+0.5
4.00+0/-0.008400/+0.5 10.00800/+0.5
4.00460/+0.5 10.00900/+0.5
4.00500/+0.5 10.001000/+0.5
4.00600/+0.5 12.00+0/-0.011700/+0.5
4.00750/+0.5 12.00790/+0.5
4.001000/+0.5 12.00830/+0.5
5.00500/+0.5 12.001000/+0.5
5.00600/+0.5 12.001200/+0.5
5.001000/+0.5 13.001000/+0.5
6.00400/+0.5 14.00750/+0.5
6.00500/+0.5 14.00800/+0.5
6.00580/+0.5 14.00830/+0.5
6.00600/+0.5 14.001000/+0.5
6.00670/+0.5 16.00800/+0.5
6.00750/+0.5 16.00900/+0.5
61000/+0.5 20.00+0/-0.0131000/+0.5
8+0/-0.009500/+0.5     
8600/+0.5     
8630/+0.5     
8750/+0.5     
8900/+0.5     
81000/+0.5     

 

 

General Tolerance for ground carbide rods

General tolerance for the h6 finished ground solid carbide rods
DiameterTolerance μm LengthTolerance StraightnessTolerance CircularityTolerances
＜3.0-6/0＜100.0+0.5/+1.0＜4.00.07<3,02,0 micron
3.0-6.0-8/0100.0-165.0+1.0/+2.54.5-5.00.063,0- 6,02,5 micron
6.0-1.0-9/0165.0-335.0+1.0/+6.05.5-120.056,1-10,03,0 micron
10.0-18.0-11/0 ＞12.50.0410,1-18,03,5 micron
18.0-30.0-13/0 18,1- 30,04,0 micron
30.0-50.0-16/030,1- 50,05,0 micron

 

General tolerance for the h5 finished ground solid carbide rods
DiameterTolerance μm LengthTolerance StraightnessTolerance CircularityTolerances
＜3.0-4/0＜100.0+0.5/+1.0＜4.00.07<3,02,0 micron
3.0-6.0-5/0100.0-165.0+1.0/+2.54.5-5.00.063,0- 6,02,5 micron
6.0-1.0-6/0165.0-335.0+1.0/+6.05.5-120.056,1-10,03,0 micron
10.0-18.0-8/0 ＞12.50.0410,1-18,03,5 micron
18.0-30.0-9/0 18,1- 30,04,0 micron
30.0-50.0-11/030,1- 50,05,0 micron
 

Our tungsten carbide rods:

  • 100% virgin material, no recycled material
  • Spray drying tower and HIP sintering furnace
  • Constant excellent quality
  • Large stock for all sizes, the regular products can be shipped in 3 days, and the special rods can be ground in one week.
  • 100% inspected before delivery. The inspection including raw material and dimension report will be sent you before delivery
  • Excellent grinding quality, Straightless and circularity could be 0.05 or 0.02.

Carbide grades 

What we can provide

 

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