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Circular Knitting Machine — Complete Guide

Circular Knitting Machine: Types, Working Principle & Sourcing Guide

The circular knitting machine is the most critical piece of equipment in Bangladesh's knitwear and RMG industry. T-shirts, polo shirts, hoodies, thermals, rib collars — all are produced on circular knitting machines. This comprehensive guide covers machine types, working principles, key components, gauge selection, and how to source and import circular knitting machines in Bangladesh.

Component Anatomy

Key Components of a Circular Knitting Machine

Cylinder & Dial

Precision-ground steel cylinder and dial housing the needles. The cylinder diameter determines the fabric tube width.

Cam Tracks & Cams

Heat-treated cams controlling needle movement — knit, tuck, and miss positions. Cam quality directly impacts fabric consistency and machine longevity.

Knitting Needles

Groz-Beckert or equivalent premium latch needles. Needle size varies by gauge. High-quality needles reduce fabric defects and extend replacement intervals.

Yarn Feeders

Positive (storage) and negative yarn feeding systems. Positive feeders ensure uniform yarn tension, maintaining consistent fabric GSM throughout the roll.

Inverter & Servo Drives

Frequency inverters and servo motors controlling machine RPM. Delivers energy savings and precise speed control for different fabric types.

How a Circular Knitting Machine Works

The fundamental working principle of a circular knitting machine involves hundreds of needles rotating continuously within a circular cylinder, creating tubular fabric from yarn. Each needle is controlled by cam tracks and operates in three key positions: Knit (catching yarn to form a loop), Tuck (adding new yarn to the previous loop), and Miss (passing without catching yarn).

Cylinder Diameter & Fabric Width

The cylinder diameter directly determines the circumference of the fabric tube. A 30" diameter cylinder produces approximately 60" (150 cm) circumference fabric, yielding 60" width when cut open. Most Bangladeshi knitting mills use machines with 30" to 38" diameter cylinders.

Circular Knitting Machine Demand in Bangladesh

Bangladesh imports thousands of circular knitting machines annually. The highest concentration of knitting mills is in the Narayanganj and Gazipur regions. Over 80% of national RMG export volume depends directly on these machines. As an established circular knitting machine importer in Bangladesh, Tasneem Knit Industry imports PSI-verified machines directly from top Chinese manufacturers. Furthermore, operating as a full-scale industrial circular knitting machine supplier and dependable circular knitting machine supplier in Bangladesh, we provide turnkey commissioning, warranty support, and complete integration via our nationwide textile machinery supplier bd ecosystem.

FAQ

Frequently Asked Questions About Circular Knitting Machines

What is a circular knitting machine and how does it work?

A circular knitting machine is an industrial textile machine that produces tubular fabric. It features a rotating cylinder with hundreds of aligned needles. Yarn is fed to needles via feeders, and cam tracks control needle movement — knit, tuck, or miss — to form the fabric structure. The machine rotates continuously, producing one course (row) of fabric per revolution.

Looking to Buy a Circular Knitting Machine? Contact Us Today

Contact us to receive a CFR Chattogram quotation for the right circular knitting machine based on your gauge, diameter, and fabric requirements.

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