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Brand Name : OUQI
Model Number : Cut-to-length carbide rods
Certification : ISO9001:2008 ISO14001:2004
Place of Origin : China
MOQ : 10pc
Price : negotiable
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability : 5000kgs per month
Delivery Time : Standard products in one week
Packaging Details : plastic box/box + Cartons
Material : YU09
ISO Grade : K10/K20
Diameter : 5.5mm
Leght : 38.5mm
Tolerance : h6/h5
Surface Roughness : Ra 0.2-0.4
Circularity : 0.005
straightness : 0.005
Density : 14.36
Hardness HV30 : 1950
T.R.S : 3900
Grain size : Middle/Fine
Micro drills PCB drills 5.5mm with hardness 1950 HV30 ground carbide rods
Dimension:
Outer Diameter: 5.5mm
Tolerance of OD -0.006
Length: 38.5mm
Tolerance of Length:+0.1/+0.4
Roughness: Ra0.1 polished
Suitable for manufacturing micro-drills 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.


| Diameter mm | Length | ||
| D | Tolerance | L | Tol. | 
| 3.25 | 0/+0.05 | 38.7 | ± 0.20 | 
| 3.25 | 0/+0.05 | 38.5 | ± 0.20 | 
| 3.50 | 0/+0.05 | 38.5 | ± 0.20 | 
| 4.00 | 0/+0.05 | 38.5 | ± 0.20 | 
| 4.50 | 0/+0.05 | 38.5 | ± 0.20 | 
| 5.00 | 0/+0.05 | 38.5 | ± 0.20 | 
| 5.50 | 0/+0.05 | 38.5 | ± 0.20 | 
| 6.00 | 0/+0.05 | 38.5 | ± 0.20 | 
| 6.50 | 0/+0.05 | 38.5 | ± 0.20 | 
| 3.50 | +0.2/+0.5 | 12.8 | ± 0.10 | 
| 4.00 | +0.2/+0.5 | 12.8 | ± 0.10 | 
| 4.50 | +0.2/+0.5 | 12.8 | ± 0.10 | 
| 5.00 | +0.2/+0.5 | 12.8 | ± 0.10 | 
| 5.50 | +0.2/+0.5 | 12.8 | ± 0.10 | 
| 6.00 | +0.2/+0.5 | 12.8 | ± 0.10 | 
| 6.50 | +0.2/+0.5 | 12.8 | ± 0.10 | 
| 6.85 | +0.2/+0.5 | 12.8 | ± 0.10 | 

| General tolerance for the h6 finished ground solid carbide rods | ||||||||||
| Diameter | Tolerance μm | Length | Tolerance | Straightness | Tolerance | Circularity | Tolerances | |||
| <3.0 | -6/0 | <100.0 | +0.5/+1.0 | <4.0 | 0.07 | <3,0 | 2,0 micron | |||
| 3.0-6.0 | -8/0 | 100.0-165.0 | +1.0/+2.5 | 4.5-5.0 | 0.06 | 3,0- 6,0 | 2,5 micron | |||
| 6.0-1.0 | -9/0 | 165.0-335.0 | +1.0/+6.0 | 5.5-12 | 0.05 | 6,1-10,0 | 3,0 micron | |||
| 10.0-18.0 | -11/0 | >12.5 | 0.04 | 10,1-18,0 | 3,5 micron | |||||
| 18.0-30.0 | -13/0 | 18,1- 30,0 | 4,0 micron | |||||||
| 30.0-50.0 | -16/0 | 30,1- 50,0 | 5,0 micron | |||||||
| General tolerance for the h5 finished ground solid carbide rods | ||||||||||
| Diameter | Tolerance μm | Length | Tolerance | Straightness | Tolerance | Circularity | Tolerances | |||
| <3.0 | -4/0 | <100.0 | +0.5/+1.0 | <4.0 | 0.07 | <3,0 | 2,0 micron | |||
| 3.0-6.0 | -5/0 | 100.0-165.0 | +1.0/+2.5 | 4.5-5.0 | 0.06 | 3,0- 6,0 | 2,5 micron | |||
| 6.0-1.0 | -6/0 | 165.0-335.0 | +1.0/+6.0 | 5.5-12 | 0.05 | 6,1-10,0 | 3,0 micron | |||
| 10.0-18.0 | -8/0 | >12.5 | 0.04 | 10,1-18,0 | 3,5 micron | |||||
| 18.0-30.0 | -9/0 | 18,1- 30,0 | 4,0 micron | |||||||
| 30.0-50.0 | -11/0 | 30,1- 50,0 | 5,0 micron | |||||||



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