Surface Finish Calculator
Estimate surface roughness Ra from feed rate and tool nose radius in turning operations.
How to Use the Surface Finish Calculator
- Enter feed per revolution in mm/rev.
- Enter tool nose radius in mm.
- Click Calculate.
- Review Ra, Rz, and finish grade.
使用例
- •CNC turning quality control
- •Surface finish specification
- •Tool selection for finish cuts
計算式
Ra = f² / (32 × r) × 1000 (μm)
よくある質問
How accurate is this calculator?
Results are based on standard engineering formulas and are suitable for preliminary estimates.
What units are used?
SI units (metres, kg, kPa) are used unless otherwise noted.
Is it free?
Yes, all calculators are completely free.