PCB Drills Tungsten Cemented Carbide Rod Blanks OD 3.175mm With One End Chamfer

Brand Name:OUQI
Certification:ISO9001:2008 ISO14001:2004
Model Number:Endmills blanks
Minimum Order Quantity:10pc
Delivery Time:Standard products in one week
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
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Location: Zhuzhou Hunan China
Address: Block B, building 4, Area B, Hi Tech New Makin Valley Xiangyuehuan Road, Tianyuan District, Zhuzhou, Hunan, China
Supplier`s last login times: within 2 hours
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Product Details

PCB drills Cemented carbide rods OD3.175 with one end chamfer


Outer diameter: 3.175mm

Length: 38.1mm

Roughness: Ra 0.2

Chamfer one side: 0.5*45°

Material: 6% Cobalt

HV30 2050

Density 14.7


GradeDensityT.R.SHardnessProperties & Applications
g/cm3N/mm2HV30
YU0614.730002050Suitable for manufacturing milling cutters 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 mmDiameter mmLength mm
DToleranceLToleranceDToleranceLTolerance
1.60+0/-0.006200/+0.510.00+0/-0.009500/+0.5
2.35300/+0.510.00700/+0.5
2.35450/+0.510.00720/+0.5
3.00600/+0.510.00750/+0.5
4.00+0/-0.008400/+0.510.00800/+0.5
4.00460/+0.510.00900/+0.5
4.00500/+0.510.001000/+0.5
4.00600/+0.512.00+0/-0.011700/+0.5
4.00750/+0.512.00790/+0.5
4.001000/+0.512.00830/+0.5
5.00500/+0.512.001000/+0.5
5.00600/+0.512.001200/+0.5
5.001000/+0.513.001000/+0.5
6.00400/+0.514.00750/+0.5
6.00500/+0.514.00800/+0.5
6.00580/+0.514.00830/+0.5
6.00600/+0.514.001000/+0.5
6.00670/+0.516.00800/+0.5
6.00750/+0.516.00900/+0.5
61000/+0.520.00+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 μmLengthToleranceStraightnessToleranceCircularityTolerances
3.0-6/0100.0+0.5/+1.04.00.07<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
10.0-18.0-11/012.50.0410,1-18,03,5 micron
18.0-30.0-13/018,1- 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 μmLengthToleranceStraightnessToleranceCircularityTolerances
3.0-4/0100.0+0.5/+1.04.00.07<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
10.0-18.0-8/012.50.0410,1-18,03,5 micron
18.0-30.0-9/018,1- 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


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China PCB Drills Tungsten Cemented Carbide Rod Blanks OD 3.175mm With One End Chamfer supplier

PCB Drills Tungsten Cemented Carbide Rod Blanks OD 3.175mm With One End Chamfer

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