Machining Feed Rate Calculator
Table feed in mm/min from spindle speed, feed per tooth and number of teeth.
Results
Feed rate
384.00
mm/min
Feed per tooth
0.3200
mm/rev
Time
15.63
s/100 mm
What this tool does
Feed per tooth is the figure tooling catalogues publish, but machines are programmed in millimetres per minute, and the bridge is the number of cutting edges. Too low a feed per tooth rubs instead of cutting, which wears the tool faster than running it hard.
Formula
FV = n × fz × z
Variables
| Symbol | Meaning | Unit |
|---|---|---|
n | Rotational speed | rpm |
fz | Feed per tooth | mm |
z | Number of teeth | — |
VF | Feed rate | mm/min |
FR | Feed per tooth | mm/rev |
TM | Time | s/100 mm |
Worked example
- Rotational speed1200 rpm
- Feed per tooth0.08 mm
- Number of teeth4
- Feed rate384.00 mm/min
- Feed per tooth0.3200 mm/rev
- Time15.63 s/100 mm
Limitations
- For work that must comply with a standard or be signed off, check the result against the applicable code and have it reviewed by a qualified engineer.
- The result is an estimate based only on the values you type. Real situations often include factors this calculator does not know about.