CNC Machining worked example
Material Removal Rate with width of cut of 0.63 in: a worked example
This scenario runs the material removal rate calculation on the strong side: width of cut of 0.63 in, with every other input held at its documented default. comparing roughing strategies, estimating cycle-time impact, or checking whether a machine and tool can support the programmed cut
The inputs for this scenario
- Width of cut: 0.63 in (raised for this scenario; the documented default is 0.25)
- Depth of cut: 0.1 in (unchanged)
- Feed rate: 60 in / min (unchanged)
- Utilization: 1 x (unchanged)
Working through the calculation
- Applying the documented formula (MRR = width of cut × depth of cut × feed rate × cutting engagement utilization) to the inputs above produces each figure below.
- At this operating point the engine returns 3.78 in³ / min for material removal rate, the number this scenario is built around.
- At this operating point the engine returns 3.78 value for base product.
- At this operating point the engine returns 1 x for multiplier.
- At this operating point the engine returns 0.06 value for factor a x b.
How this compares with the baseline
- Against the tool's baseline example, where width of cut sits at 0.25 in and the headline result is 1.5 in³ / min, this scenario comes in 152% above the baseline at 3.78 in³ / min.
- Use it when programming or optimizing a roughing pass, checking whether a feed and speed will exceed available spindle power, or estimating cycle time on a milling operation. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.
Results at a glance
- material removal rate: 3.78 in³ / min (headline result)
- Base product: 3.78 value
- Multiplier: 1 x
- Factor A x B: 0.06 value
Run it with your numbers
- Every input above is editable in the live Material Removal Rate calculator, which recalculates instantly and can be shared with the inputs intact.
Last reviewed 2026-05-12.