Reaming speeds and feeds (RPM, feed rate)
Spindle speed, feed rate and cutting time for finishing holes with a reamer.
⊚Reaming calculator
Spindle speed n—rpm
Feed rate Vf—mm/min
Cutting time—
n = 1000 × Vc ÷ (π × D) Vf = f × n Time = L ÷ Vf
Red = input dimensions, green = rotation and motion. Schematic, not to scale.
Notes
- Reamers usually run at a lower surface speed and a higher feed than drills. Check the tool maker’s recommendation for actual values.
All values are guides. Start from the tool maker’s recommended cutting data and adjust for your machine, workholding and coolant. Calculations run in your browser; nothing you enter is sent anywhere.