lead screws parameter

2018-10-17 09:12:55 laiwophp 5

Trapezoidal lead screws

We must know more details when order lead screws

 

THREAD TYPES

Trapezoidal thread have a 30° included thread angle, mainly use for mini automation equipment, 3D printer,

 

PITCH DIAMETER

On an lead screw, this diameter is approximately halfway between the land diameter and the root diameter. It is the diameter at which the thread thickness is equal to the space between threads.

 

ROOT (MINOR) DIAMETER

The diameter of the screw measured at the bottom of the thread.

 

PITCH

The axial distance between threads. Pitch is equal to the lead in a single start screw.

 

LEAD

The axial distance the nut advances in one revolution of the screw. The lead is equal to the pitch times the number of starts.

PITCH × STARTS = LEAD

 

SCREW STARTS

The number of independent threads on the screw shaft; example one, two or four.