# Textile Calculation

Problems and solutions of textile

## Relation Between Yarn Count and Machine Gauge

Relation Between Yarn Count and Machine Gauge
Raju Tex
Knitting Technologist,
B.J.Group, Mawna, Gazipur
Chittagong Textile Engineering College

Introduction:
Selection of machine gauge depends upon yarn diameter. Yarn diameter also depends on several factors such as yarn count, fiber type, yarn twist, yarn finishing etc. General practice of yarn count and machine gauge in different industries in Bangladesh given below:
 Machine Gauge
Machine Gauge According to Yarn Count:
 Yarn Count Machine Gauge 16 18 18 20 20 20 20 24 24 22 24 24 26 20 26 22 26 24 26 28 28 22 28 25 28 28 30 22 30 24 30 28 30 34 34 28 34 28

The above values may differ, because it is the results of a research work. There is a relation between yarn in tex and machine gauge is given by a equation,

For single-jersey, G = √(1650 / Tex) and

For double-jersey, G = √(1400 / Tex)

Where, G is measured in needles per cm.

The yarn count to be used on a circular knitting machine depends largely on the pitch, and thus on the machine gauge. For any given machine gauge it can lie within a larger range, because on the same machine different yarn count scan be used, depending on the knitted structure, the desired optics(fabric appearance)and the fabric properties.