AutoEngCalc - Engineering Calculators

Lathe Cutting Parameters

Calculate optimal spindle RPM, cutting speed, feed rate, depth of cut, material removal rate (MRR) and required power for turning operations. Built-in material database.

Spindle RPM

1200 RPM

Steel, D=100mm, Vc=150 m/min

Lathe Turning Parameters

Featured: RPM • Vc • Feed • MRR • Power

Workpiece Material Recommended Vc range (m/min)

Cutting Speed Vc (m/min)

Workpiece Diameter D (mm)

Feed Rate f (mm/rev)

Depth of Cut a_p (mm)

Specific Cutting Force Kc (N/mm²) Steel ~2000, Al ~800

Recommended RPM Range

Safe operating window

Key Formulas

RPM = (Vc × 1000) / (π × D)
Feed Rate (mm/min) = f × RPM
MRR = π × D_avg × a_p × f × RPM
Power = (F_c × Vc) / 60 (kW)

Enter parameters to see results

Turning Guidelines

Typical Cutting Speeds

Roughing: Lower end of range

Finishing: Higher end

Carbide tools: Higher Vc

Feed & Depth

Roughing: Depth 2–5 mm, feed 0.3–0.8 mm/rev

Finishing: Depth <1 mm, feed 0.05–0.3 mm/rev

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