Material Removal Rate Calculator

Calculate material removal rate (MRR) for CNC machining operations with power consumption, cycle time estimation, and machine utilization analysis for South African manufacturing.

Optimize productivity with Eskom electricity cost analysis

Material & Operation Type

Workpiece Material *

Cutting Force: 2200 N/mm²

Machining Operation *

Flat surface milling with face mill or end mill

Formula:

MRR = ae × ap × vf

Radial Depth (ae) • Axial Depth (ap) • Feed Rate (vf)

Machining Parameters

Radial Depth (ae) mm *

Width of cut

Axial Depth (ap) mm *

Depth of cut

Feed Rate (vf) mm/min *

Table feed rate

Machine Capacity & Energy Cost

Spindle Power (kW) *

Machine spindle power rating

Target Utilization (%)

Desired machine utilization

Electricity Cost (R/kWh)

Eskom rate (R2.00-R5.50/kWh typical)

Part Dimensions (for Cycle Time Estimation)

Part Length (mm)

Part Width (mm)

Material to Remove (mm)

Total depth to remove

📊 MRR Productivity Benchmarks

MRR Range (cm³/min)	Productivity Rating	Application
< 10	Low	Light finishing, precision work
10 - 20	Medium	General finishing, semi-finishing
20 - 50	High	Roughing, general production
50 - 100	Very High	High-efficiency roughing
> 100	Extreme	Mass production, verify machine capacity

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