Yarn winder area distance in the tube is known as Lift of the Ring Tube. YRGA small step groove is provided in the bottom hole of the Ring tube, which accommodates the yarn on the spindle and avoids tube jamming. Angle of pull. The angle of pull depends upon the ring diameter and tube diameter.

Sin A =   Ring tube O / Ring O

The higher the angle lesser the end breakages.

Eccentricity – Variation in circularity on the diameter of the ring tube is known eccentricity. Lower the eccentricity in Ring Tube will result in higher quality and performance of the Ring Tube. PC ring tube has an eccentricity of upto 0.1 mm. During normal usage it tends to increase due to the work stress and strain.

WT – Wall thickness in Ring tube near spindle button has maximum load and friction due to higher speed. Hence higher wall thickness  with low eccentricity is optimum for high speed Ring frames.

Taper – The normal tube taper are 1:38, 1:40 and 1:64

1:40 Tapes = 1mm diameter difference in 40mm length.

Tube clearance – The clearance between Ring Tube & Spindle is called as Tube clearance. Lower the clearance lower the eccentricity in high working spindle speed. Tube clearance should be maintained in such a manner that is should with stand the contraction caused by winded yarn on tube, for easy removal.