General Studies · Drilling Process
What is the correct expression to calculate cutting speed (v in m/min) in the drilling process, where 'd' is the diameter of the drill in mm and 'n' is the rotational speed in RPM?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1v = π × d × n1000✓
- 2v = π × d2 × n1000
- 3v = π × d2 × n21000
- 4v = π × d × n21000
Correct answer
v = π × d × n1000
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