Machining Dynamics // G-Code Feeds & Speeds

CNC Speeds & Feeds
Calculator

Compute mathematically calibrated spindle RPM (n) and table feed rate (Vf) based on material surface speed, cutter diameter, and chip load per tooth.

Tool & Material Parameters

Stock Material Preset

Requires high RPM and brisk feed rate to prevent chip welding. Single or 2-flute carbide recommended with mist lubrication.

Cutter Diameter (D)6 mm

1 mm (Micro)12.7 mm (1/2")25 mm (1")

Number of Flutes (z)

Surface Speed (Vc)180 m/min

≈ 591 Surface Feet/Min (SFM)

Chip Load (fz)0.045 mm/t

≈ 0.0018 Inches Per Tooth (IPT)

Max Machine Spindle RPM24,000 RPM

Computed Toolpath Output

Spindle Speed (n)

9,549RPM

Linear Feed Rate (Vf)

859mm/min

= 33.8 Inches Per Minute (IPM)

Ramp / Plunge Feed Rate:301 mm/min

Effective Surface Speed:180 m/min (591 SFM)

Feed per Revolution (fr):0.090 mm/rev

Machining Status: Optimal Chip Load