Selection of drilling speed for carbon steel drilling machines
Drilling Speed Chart
| Feed rate | Linear speed v | Drill bit diameter | Guide length | Drilling speed | Feed amount |
| 1000 | 25 | φ16 | 4.7 | 400 | 0.4 |
| 1000 | 25 | φ17 | 5 | 400 | 0.4 |
| 1000 | 25 | φ18 | 5.2 | 250 | 0.25 |
| 1000 | 25 | φ19 | 5.5 | 400 | 0.4 |
| 1000 | 25 | φ20 | 5.8 | 400 | 0.4 |
| 1000 | 25 | φ21 | 6.1 | 320 | 0.32 |
| 1000 | 25 | φ22 | 6.4 | 320 | 0.32 |
| 1000 | 25 | φ23 | 6.7 | 320 | 0.32 |
| 1000 | 25 | φ24 | 7 | 320 | 0.32 |
| 1000 | 25 | φ25 | 7.3 | 320 | 0.32 |
| 1000 | 25 | φ26 | 7.6 | 320 | 0.32 |
| 1000 | 25 | φ27 | 7.9 | 250 | 0.25 |
| 1000 | 25 | φ28 | 8.1 | 250 | 0.25 |
| 1000 | 25 | φ29 | 8.4 | 250 | 0.25 |
| 1000 | 25 | φ30 | 8.7 | 250 | 0.25 |
| 1000 | 25 | φ31 | 9 | 250 | 0.25 |
| 1000 | 25 | φ32 | 9.3 | 250 | 0.25 |
| 1000 | 25 | φ33 | 9.6 | 250 | 0.25 |
| 1000 | 25 | φ34 | 9.9 | 200 | 0.2 |
| 1000 | 25 | φ35 | 10.2 | 200 | 0.2 |
| 1000 | 25 | φ36 | 10.5 | 200 | 0.2 |
| 1000 | 25 | φ37 | 10.7 | 200 | 0.16 |
| 1000 | 25 | φ38 | 11 | 200 | 0.16 |
| 1000 | 25 | φ39 | 11.3 | 200 | 0.16 |
| 1000 | 25 | φ40 | 11.6 | 200 | 0.16 |
| 1000 | 25 | φ41 | 11.9 | 200 | 0.16 |
| 1000 | 25 | φ42 | 12.2 | 160 | 0.16 |
| 1000 | 25 | φ43 | 12.5 | 160 | 0.16 |
| 1000 | 25 | φ44 | 12.8 | 160 | 0.16 |
| 1000 | 25 | φ45 | 13 | 160 | 0.16 |
| 1000 | 25 | φ46 | 13.3 | 160 | 0.16 |
| 1000 | 25 | φ47 | 13.6 | 160 | 0.16 |
| 1000 | 25 | φ48 | 13.9 | 160 | 0.16 |
| 1000 | 25 | φ49 | 14.2 | 160 | 0.16 |
| 1000 | 25 | φ50 | 14.5 | 125 | 0.13 |
| 1000 | 25 | φ51 | 14.8 | 125 | 0.13 |
| 1000 | 25 | φ52 | 15 | 125 | 0.13 |
| 1000 | 25 | φ53 | 15.3 | 125 | 0.13 |
| 1000 | 20 | φ54 | 15.6 | 125 | 0.13 |
| 1000 | 20 | φ55 | 15.9 | 125 | 0.13 |
| 1000 | 20 | φ56 | 16.2 | 125 | 0.13 |
| 1000 | 20 | φ57 | 16.5 | 100 | 0.1 |
| 1000 | 20 | φ58 | 16.8 | 100 | 0.1 |
| 1000 | 20 | φ59 | 17 | 100 | 0.1 |
| 1000 | 20 | φ60 | 17.3 | 100 | 0.1 |
| 1000 | 20 | φ61 | 17.6 | 100 | 0.1 |
| 1000 | 20 | φ62 | 17.9 | 100 | 0.1 |
| 1000 | 20 | φ63 | 18.2 | 100 | 0.1 |
| 1000 | 20 | φ64 | 18.5 | 100 | 0.1 |
| 1000 | 20 | φ65 | 18.8 | 100 | 0.1 |
| 1000 | 20 | φ66 | 19.1 | 80 | 0.06 |
| 1000 | 20 | φ67 | 19.4 | 80 | 0.06 |
| 1000 | 20 | φ68 | 19.7 | 80 | 0.06 |
| 1000 | 20 | φ69 | 20 | 80 | 0.06 |
| 1000 | 20 | φ70 | 20.3 | 80 | 0.06 |
| 1000 | 20 | φ71 | 20.6 | 80 | 0.06 |
| 1000 | 20 | φ72 | 20.9 | 80 | 0.06 |
| 1000 | 20 | φ73 | 21.2 | 80 | 0.06 |
| 1000 | 20 | φ74 | 21.4 | 80 | 0.06 |
| 1000 | 20 | φ75 | 21.7 | 80 | 0.06 |
Drilling Speed Calculation Formula
Calculation formula: Drilling speed × Drill bit diameter × Π = Linear speed v
∏＝3.141592654
Selection of drilling speed for stainless steel drilling machines
Drilling Speed Chart
| Feed rate | Linear speed v | Drill bit diameter | ∏ | Guide length | n | Drilling speed | Feed amount |
| 1000 | 15 | 16 | 3.14 | 4.7 | 298.42 | 320 | 0.32 |
| 1000 | 15 | 17 | 3.14 | 5 | 280.86 | 320 | 0.32 |
| 1000 | 15 | 18 | 3.14 | 5.2 | 265.26 | 250 | 0.2 |
| 1000 | 15 | 19 | 3.14 | 5.5 | 251.30 | 250 | 0.25 |
| 1000 | 15 | 20 | 3.14 | 5.8 | 238.73 | 250 | 0.25 |
| 1000 | 15 | 21 | 3.14 | 6.1 | 227.36 | 200 | 0.2 |
| 1000 | 15 | 22 | 3.14 | 6.4 | 217.03 | 200 | 0.2 |
| 1000 | 15 | 23 | 3.14 | 6.7 | 207.59 | 200 | 0.2 |
| 1000 | 15 | 24 | 3.14 | 7 | 198.94 | 200 | 0.2 |
| 1000 | 15 | 25 | 3.14 | 7.3 | 190.99 | 200 | 0.2 |
| 1000 | 15 | 26 | 3.14 | 7.6 | 183.64 | 200 | 0.2 |
| 1000 | 15 | 27 | 3.14 | 7.9 | 176.84 | 160 | 0.16 |
| 1000 | 15 | 28 | 3.14 | 8.1 | 170.52 | 160 | 0.16 |
| 1000 | 15 | 29 | 3.14 | 8.4 | 164.64 | 160 | 0.16 |
| 1000 | 15 | 30 | 3.14 | 8.7 | 159.15 | 160 | 0.16 |
| 1000 | 15 | 31 | 3.14 | 9 | 154.02 | 160 | 0.16 |
| 1000 | 15 | 32 | 3.14 | 9.3 | 149.21 | 160 | 0.16 |
| 1000 | 15 | 33 | 3.14 | 9.6 | 144.69 | 125 | 0.13 |
| 1000 | 15 | 34 | 3.14 | 9.9 | 140.43 | 125 | 0.13 |
| 1000 | 15 | 35 | 3.14 | 10.2 | 136.42 | 125 | 0.13 |
| 1000 | 15 | 36 | 3.14 | 10.5 | 132.63 | 125 | 0.13 |
| 1000 | 15 | 37 | 3.14 | 10.7 | 129.04 | 125 | 0.13 |
| 1000 | 15 | 38 | 3.14 | 11 | 125.65 | 100 | 0.13 |
| 1000 | 15 | 39 | 3.14 | 11.3 | 122.43 | 100 | 0.13 |
| 1000 | 15 | 40 | 3.14 | 11.6 | 119.37 | 100 | 0.1 |
| 1000 | 15 | 41 | 3.14 | 11.9 | 116.45 | 80 | 0.1 |
| 1000 | 15 | 42 | 3.14 | 12.2 | 113.68 | 80 | 0.1 |
| 1000 | 15 | 43 | 3.14 | 12.5 | 111.04 | 80 | 0.1 |
| 1000 | 15 | 44 | 3.14 | 12.8 | 108.51 | 80 | 0.08 |
| 1000 | 15 | 45 | 3.14 | 13 | 106.10 | 80 | 0.08 |
| 1000 | 15 | 46 | 3.14 | 13.3 | 103.80 | 63 | 0.08 |
| 1000 | 15 | 47 | 3.14 | 13.6 | 101.59 | 63 | 0.08 |
| 1000 | 15 | 48 | 3.14 | 13.9 | 99.47 | 63 | 0.08 |
| 1000 | 15 | 49 | 3.14 | 14.2 | 97.44 | 63 | 0.08 |
| 1000 | 15 | 50 | 3.14 | 14.5 | 95.49 | 63 | 0.08 |
| 1000 | 15 | 51 | 3.14 | 14.8 | 93.62 | 63 | 0.08 |
| 1000 | 15 | 52 | 3.14 | 15 | 91.82 | 63 | 0.06 |
| 1000 | 15 | 53 | 3.14 | 15.3 | 90.09 | 63 | 0.06 |
| 1000 | 15 | 54 | 3.14 | 15.6 | 88.42 | 63 | 0.06 |
| 1000 | 15 | 55 | 3.14 | 15.9 | 86.81 | 63 | 0.06 |
| 1000 | 15 | 56 | 3.14 | 16.2 | 85.26 | 63 | 0.06 |
| 1000 | 15 | 57 | 3.14 | 16.5 | 83.77 | 63 | 0.06 |
| 1000 | 15 | 58 | 3.14 | 16.8 | 82.32 | 63 | 0.06 |
| 1000 | 15 | 59 | 3.14 | 17 | 80.93 | 63 | 0.06 |
| 1000 | 15 | 60 | 3.14 | 17.3 | 79.58 | 63 | 0.06 |
| 1000 | 15 | 61 | 3.14 | 17.6 | 78.27 | 63 | 0.06 |
| 1000 | 15 | 62 | 3.14 | 17.9 | 77.01 | ||
| 1000 | 15 | 63 | 3.14 | 18.2 | 75.79 | ||
| 1000 | 15 | 64 | 3.14 | 18.5 | 74.60 | ||
| 1000 | 15 | 65 | 3.14 | 18.8 | 73.46 | ||
| 1000 | 15 | 66 | 3.14 | 19.1 | 72.34 | ||
| 1000 | 15 | 67 | 3.14 | 19.4 | 71.26 | ||
| 1000 | 15 | 68 | 3.14 | 19.7 | 70.22 | ||
| 1000 | 15 | 69 | 3.14 | 20 | 69.20 | ||
| 1000 | 15 | 70 | 3.14 | 20.3 | 68.21 | ||
| 1000 | 15 | 71 | 3.14 | 20.6 | 67.25 | ||
| 1000 | 15 | 72 | 3.14 | 20.9 | 66.31 | ||
| 1000 | 15 | 73 | 3.14 | 21.2 | 65.41 | ||
| 1000 | 15 | 74 | 3.14 | 21.4 | 64.52 | ||
| 1000 | 15 | 75 | 3.14 | 21.7 | 63.66 |
Drilling Speed Calculation Formula
Calculation formula: Drilling speed × Drill bit diameter × ∏ = Linear speed v
∏＝3.141592654
Conclusion
In conclusion, optimizing your drilling speed is crucial for achieving efficient and cost-effective drilling. With the help of our drilling speed chart and calculation formula, sourced from machinemfg.com, you can take the guesswork out of the equation and achieve maximum efficiency.
By selecting the right drilling speed, you can reduce tool wear, increase drilling speed, and improve the quality of your workpiece. So why settle for subpar results when you can achieve excellence?
Use our drilling speed chart and calculation formula to take your drilling process to the next level. Thank you for reading, and happy drilling!
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