PPolySim OS

CNC Feeds & Speeds

Dial in a cut and you either make chips or make scrap. Feeds and speeds match spindle RPM and feed rate to the material so the tool cuts clean and lasts.

CNC Feeds & SpeedsLive
9549
spindle RPM
1910
feed mm/min
Aluminum · ⌀10mm · 4 flutes

Controls

Presets

Machining a part right means matching spindle speed and feed to the material. The cutting speed (surface meters per minute) sets the RPM for a given tool diameter; the feed rate is RPM times chip load per tooth times the number of teeth. Too fast burns the tool; too slow rubs and work-hardens. The material removal rate is your productivity.

▶ Run in Python

Data Inspector

Spindle speed9549 RPM
Feed rate1910 mm/min
Cutting speed300 m/min
Material removal38.2 cm³/min

Governing equation

Reading this result: Feed rate is RPM times chip load times flute count, so adding flutes or feed lifts throughput here to about 38.2 cm³/min without changing the surface speed.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

or unlock everything with Pro →
★ Sign in to save this setup
Save your tuned setup, or drop this simulation into your own site, docs, or course page.

How it works

Cutting speed — the surface meters per minute a material tolerates — sets the spindle RPM for a given tool diameter. Feed rate is RPM times the chip load per tooth times the number of teeth. Too fast overheats and dulls the tool; too slow rubs and work-hardens the part. The material removal rate measures how quickly you turn stock into a finished part.

✦

Ask the AI about this model

The math, the assumptions, real-world uses, or a code translation — explained for this exact simulation.

More Manufacturing simulations

Frequently asked questions

Is this CNC feeds and speeds calculator tool really free?▾
Yes. CNC Feeds & Speeds runs entirely in your browser using your device's own compute, so local use is free forever. You only pay Compute Tokens if you scale a job to the cloud.
Do I need to install anything?▾
No. Everything runs client-side in a modern browser — no downloads, no license, no account required to start.
Can I save or share my simulation?▾
Create a free account to save projects, and use a shareable embed or minted DOI to publish a live, interactive version anywhere.
How accurate are the results?▾
The solver uses established numerical methods, but results are for research and educational purposes and should be validated against experiment or professional review before you rely on them.