A 10 mm shaft with a 3 mm keyway requires a keyseat depth of approximately 3.5 mm. Going too deep weakens the shaft hub, too shallow and the key does not transmit full torque.
A 10 mm shaft with a 3 mm keyway requires a keyseat depth of approximately 3.5 mm. Going too deep weakens the shaft hub, too shallow and the key does not transmit full torque. This calculator simplifies the process so you can focus on making parts, not doing manual trig on the shop floor.
Whether you work on a Haas VF-2, a Mazak Integrex, or an Okuma MB-5000, understanding this calculation is essential for consistent quality. Many CAM systems handle it automatically, but knowing how to verify the output prevents costly programming errors.
The practical application varies by shop environment. For job shops running short runs, a quick reference is sufficient. For production shops with repeat orders, documenting these parameters in the setup sheet saves time on every rerun.
How accurate is this calculation? The formula is exact within the limits of your input precision. Always verify critical dimensions with calibrated measurement tools.
Can I use this on a Mazak or Haas control? The math is universal. CAM systems use the same formulas internally — this calculator is a cross-check.
What is the common mistake machinists make? Forgetting to account for tool radius or gage pin diameter. Always double-check which reference point the print uses.
⚡ Calculated for Carbide-Tooling.com High-Performance Series. View Catalog →
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