Plan carbide drilling inputs with practical precision. Balance speed, feed, depth, load, and production efficiency. Use clear outputs, examples, formulas, exports, and graphs daily.
| Material | Diameter | Depth | Surface Speed | RPM | Feed |
|---|---|---|---|---|---|
| Mild Steel | 10 mm | 25 mm | 78.2 m/min | 2488 | 144 mm/min |
| Aluminum | 8 mm | 20 mm | 221.0 m/min | 8805 | 556 mm/min |
| Stainless Steel | 12 mm | 36 mm | 50.6 m/min | 1342 | 77 mm/min |
| Titanium | 6 mm | 24 mm | 31.4 m/min | 1667 | 39 mm/min |
| Cast Iron | 14 mm | 28 mm | 67.1 m/min | 1527 | 137 mm/min |
1. Surface speed: Recommended SFM = Base SFM × coating factor × coolant speed factor × hardness factor × rigidity factor × depth factor × safety factor.
2. Metric cutting speed: m/min = SFM × 0.3048.
3. Spindle speed: RPM = (SFM × 3.82) ÷ drill diameter in inches.
4. Feed per revolution: Base IPR = diameter in inches × chip coefficient. Adjusted IPR = Base IPR × coolant feed factor × hardness factor × rigidity factor × depth feed factor × safety factor.
5. Feed rate: Feed rate = RPM × IPR.
6. Metal removal rate: MRR = (π × D² ÷ 4) × feed rate.
7. Power: HP = unit power × MRR ÷ spindle efficiency.
8. Torque: Torque = 9550 × kW ÷ RPM.
9. Cycle time: Time per hole = travel distance ÷ feed rate + retract penalty.
Carbide drilling speeds and feeds directly affect tool life, surface finish, chip control, spindle load, and total machining cost. An engineering team that starts with realistic cutting data can reduce scrapped parts, unstable drilling behavior, and unexpected tool breakage. This calculator gives a structured estimate for daily production planning.
The tool combines material-based cutting data with drilling diameter, hole depth, hardness, coating choice, coolant condition, and setup rigidity. It then estimates spindle speed, feed rate, peck requirements, cycle time, metal removal rate, power demand, and torque. That makes it useful for process engineers, CNC programmers, and shop-floor planners.
Deep holes often require reduced speed and feed to protect carbide edges and improve chip evacuation. Weak setups also need more conservative values because deflection and vibration rise quickly during drilling. By including depth ratio and rigidity, the calculator produces recommendations that are more practical than a simple handbook lookup.
Use the outputs as a starting point, then confirm performance on the machine with actual coolant delivery, spindle condition, tool holder quality, and workholding rigidity. Compare the estimated power and torque with machine capability. Review the cycle time result when quoting work, balancing output targets, or deciding whether a different drill diameter or peck method is better.
A carbide drilling speeds and feeds calculator supports repeatable engineering decisions, but it should always be followed by controlled shop verification. Small changes in drill geometry, edge preparation, runout, and coolant pressure can shift the best operating point. Use the graph and export tools to document settings, compare scenarios, and standardize drilling processes across similar jobs.
Carbide tolerates higher cutting temperatures and usually keeps its edge longer. That allows higher surface speed and better productivity when setup rigidity and chip evacuation are controlled.
Not always, but it is often preferred for deeper holes and harder materials. It improves chip evacuation, reduces heat, and supports stable carbide drilling conditions.
Feed that is too low can cause rubbing, heat buildup, poor chip formation, and premature edge wear. Carbide tools usually perform best with a steady, meaningful chip load.
As hole depth rises, chip evacuation becomes harder and heat stays near the cutting edge longer. Lower values help protect the drill and improve reliability.
Use caution with micro drills. Very small diameters are more sensitive to runout, spindle accuracy, and tool geometry. Final shop validation becomes even more important.
Yes. Coatings can improve heat resistance, wear behavior, and friction control. The best coating depends on the work material, coolant method, and hole depth.
Recommended drilling values may exceed the machine’s practical capability. Entering machine limits helps create usable results for real production conditions and safer planning.
No. It is a structured starting estimate. Final production values should be confirmed with tool supplier guidance, machine behavior, and controlled shop-floor testing.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.