Tungsten carbide twist drill bit
$6.00
suitable for machining iron casting,mold steel,alloy,carbon steel,tool steel.
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Description
Adopt the Europe carbide tungsten bar materials,we machined the twist drills with the high-precision 5-axis tool grinder.So our products have high precision,long service time and low cost.suitable for machining iron casting,mold steel,alloy,carbon steel,tool steel.
Tungsten carbide twist drill with oil hole
| Edge
d1 |
Shank
D |
Edge
L1 |
Shank
L2 |
Total
L |
Inner cooling | External
cooling |
| 1.0–2.9 | 4 | 6–17 | 30 | 50 | ● | |
| 3.0–3.3 | 6 | 25 | 36 | 66 | ● | |
| 3.4–3.7 | 6 | 25 | 36 | 66 | ● | ● |
| 3.8–4.7 | 6 | 32 | 36 | 74 | ● | ● |
| 4.8–6.0 | 6 | 40 | 36 | 82 | ● | ● |
| 6.1–8.0 | 8 | 50 | 36 | 91 | ● | ● |
| 8.1–10.0 | 10 | 57 | 40 | 103 | ● | ● |
| 10.1–12.0 | 12 | 65 | 45 | 118 | ● | ● |
| 12.1–14.0 | 14 | 72 | 45 | 124 | ● | ● |
| 14.1–16.0 | 16 | 77 | 48 | 133 | ● | ● |
| 16.1–18.0 | 18 | 87 | 48 | 143 | ● | ● |
| 18.1–20.0 | 20 | 95 | 50 | 153 | ● | ● |
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