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Speeds and feeds calculator

Explore calculated outputs for a fixed 4140 milling setup. Change the slider to compare the estimates and inspect the equations.

Kinzel development

4140 alloy steel — ½″ 4-flute TiAlN · Haas VF-2 · flood WITHIN MODEL
Material
4140
Diameter
0.500in
DOC
0.500in
WOC
0.150in
e.g. 2″×3″×0.375″ pocket = 2.25 in³
Fixturing, inspection, tool changes
Aggression Moderate
ConservativeModerateLimit
Spindle RPM
—
Feed rate
—IPM
MRR
—in³/m
Cutting force
—N
Tool life
—min
Chip load
—in
Cycle time
—
Cutting time
—
vs. conservative
—
SV-1 · Standard Value
—
This cut, standard rate
—
Frontier, 1.0
—
SV-1 uses $90 per hour and the example’s tool prices. The reference cost comes from an assumed machine and tool configuration.
Cutting force
Tool deflection
Spindle power
Chatter risk
Physics — Kienzle force, Taylor tool life
Results are calculated starting points based on physics models. Validate all parameters on your machine before production use. Kinzel Corporation is not liable for damages resulting from use of these results. Terms of use
Run it on your machine See pricing

This is a fixed 4140 / Haas VF-2 example. Contact us about evaluating calculations for other materials, tools, and machines.

Inputs, equations, and calculated results

Kinzel’s example calculates RPM, feed, material removal, force, and tool life from a fixed set of inputs. The formula strip shows the selected equation and values used.

The slider changes spindle speed and feed. Force and tool-life estimates use the Kienzle and Taylor models. The bars compare outputs with preset thresholds; they are not measurements from a machine.

SV-1 compares the estimated cost of this cut with a modeled reference cost. It is an experimental comparison metric.

What can I inspect in this example?
The example shows its fixed material and tool inputs, selected equations, and calculated outputs. It does not establish cutting accuracy or safety for your machine.
Does it account for my specific machine?
The example here is fixed to one machine and tool. Running it on your own spindle power, rigidity, and tooling is in early access, where machine condition and workholding become part of the calculation.
Are these numbers ready to run?
They are calculated starting points from physics models, not production parameters. Always validate on your machine first. Get in touch to run it on your own data.
Results are starting points, not production parameters.
Kinzel calculates speeds and feeds from physics models. Results reflect calculated estimates based on material constants and tool geometry, not your specific machine condition, workholding rigidity, or setup variables.

Always validate parameters on your machine before production use. Kinzel Corporation is not liable for any damages, injury, property damage, tool breakage, scrapped parts, or lost profit resulting from use of these results.