Inches Per Revolution Formula |
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IPR \;=\; \dfrac{ IPM }{ RPM } (Inches per Revolution) IPM \;=\; IPR \cdot RPM RPM \;=\; \dfrac{ IPM }{ IPR } |
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| Symbol | English | Metric |
| IPR = Inches per Revolution | in\;/\;rev | - |
| IPM = Inches per Minute | in\;/\;min | - |
| RPM = Revolutions per Minute | rev\;/\;min | - |
Machining inches per revolution, abbreviated as IPR, is the distance in inches that a cutting tool travels for each revolution of the spindle during a machining operation. It is used to determine the feed rate of the cutting tool. By adjusting the feed rate and spindle speed, machinists can control the IPR to achieve optimal cutting conditions for different materials and machining operations. Optimizing IPR is crucial for achieving desired surface finishes, extending tool life, and improving overall machining efficiency. Different materials and cutting tools may require specific IPR settings to achieve the best results
