Calculation method
RPM = cutting speed × 1000 ÷ (π × tool diameter); feed = RPM × flute count × feed per tooth; MRR = feed × radial width × axial depth. Sourced condition factors and machine clamps remain visible in the result.
Machining Speeds & Feeds Calculator
Build a conservative milling starting point from material group, cutter type and diameter, operation, radial/axial engagement, coolant condition, and machine RPM/feed limits.
Part of Workshop Calc ↗Ready to calculate
Enter the dimensions, then calculate to see a checkable result.
Estimate only:Follow the tool and machine manufacturers, begin conservatively, and monitor heat, load, vibration, chip evacuation, and finish.
02 / Method & limits
Make the calculation checkable.
Result anatomy
The result shows its source family, selected modifiers, unclamped RPM/feed, final machine-limited values, and material-removal estimate.
Limits & checks
- The model is limited to the listed solid end-mill material groups and conditions; a specific tool maker's data overrides it.
- Recommendations remain conservative starting points, not guaranteed production settings.
Sources & review
- Guhring RF 100 3893 — speed, feed, engagement, and coating data ↗
- Sandvik Coromant — machining formulas and definitions ↗
- Sandvik Coromant — radial engagement and trochoidal-milling guidance ↗
- Kennametal HARVI II TE — independent solid-carbide end-mill application cross-check ↗
Last reviewed: 2026-07-19