Spindle speed
Spindle speed corresponding to pitch and feed.
Mechanics · Machining
Tapping feed from pitch and spindle speed
In ideal synchronized tapping, the tool advances one thread pitch per revolution, directly linking pitch, spindle speed and axial feed.
Created v1.0
By Thibaut Grzelak, Mechanical Analysis Engineer
02
Results
Tapping feed
Theoretical axial feed for one pitch per revolution.
Relation and numerical substitution
Vf = n · P—
Synchronized tapping with one thread pitch of axial travel per revolution. The entered pitch matches the thread being cut. Rigid tapping cycle behavior, holder compensation and machine limits must be checked separately.
01Formulas and symbols
Formulas used
Vf
n · PTapping feedn
Vf / PSpindle speed02Assumptions and limits
Scope of validity
- Synchronized tapping with one thread pitch of axial travel per revolution.
- The entered pitch matches the thread being cut.
- Rigid tapping cycle behavior, holder compensation and machine limits must be checked separately.
03Validation example
Reference numerical case
- P = 1.25 mm and n = 800 rpm.
- Vf = 800 × 1.25 = 1,000 mm/min.
04References
Technical references
- Synchronized tapping kinematics: feed per revolution equals thread pitch.
- Also check cutting speed and spindle limits against tool data.