Single Jersey Knitting Machine: Types, Parts, and Buying Guide

The fabric stretches more in width than in length, which makes it suitable for garments that need crosswise recovery — T-shirts, polo shirts, underwear, sleepwear, and lightweight sportswear. A single jersey knitting machine produces the fabric in tubular form, which is then slit or kept round depending on the finishing route.

The machine’s cylinder carries one set of needles. A double jersey machine carries two — a dial and a cylinder — which is why the two fabrics differ in structure and thickness. Single jersey fabric is lighter, more breathable, and cheaper to produce per kilogram than double jersey fabric.

For a buyer, the key point is that a single jersey machine is a volume machine. It is built to run plain fabric at high speed, with optional attachments for striping, plating, or jacquard patterns. If the factory’s product mix is mostly basic T-shirt fabric, a single jersey machine is the right investment.

Types of Single Jersey Knitting Machines

Not all single jersey machines are the same. They split by frame type, cylinder size, and pattern capability.

Standard Single Jersey Machine

This is the workhorse. A rotating cylinder with latch needles, a fixed cam track, and positive yarn feeding. The machine knits plain jersey continuously and reaches the highest speeds in the category — typically 25 to 35 rpm depending on cylinder diameter and gauge.

Standard machines suit high-volume production of basic fabrics. The investment is lower than a jacquard machine, and the maintenance is simpler. Most mills start with standard single jersey machines and add pattern machines later.

Single Jersey Jacquard Machine

A jacquard single jersey machine uses electronic needle selection to create patterns — stripes, small motifs, engineered designs. The machine’s control system selects individual needles per feed, which allows the fabric to change design without stopping the machine.

Jacquard machines run slower than standard machines and cost significantly more. They suit mills that produce fashion fabrics, activewear with logo patterns, or technical fabrics where the pattern is part of the product’s function.

Plating and Striping Machines

Some single jersey machines carry attachments for plating — knitting two yarns together with one showing on the face and one on the back. Others carry striping units that feed different colored yarns in sequence to create horizontal stripes. These machines fill the gap between plain jersey and full jacquard, adding visual variety without the full cost of electronic selection.

Open-Width Single Jersey Machine

A standard single jersey machine produces tubular fabric. An open-width machine slits the fabric as it comes off the machine and rolls it flat. This saves a separate slitting step and reduces edge curling during finishing. Open-width machines suit mills that supply flat-fold fabric directly to cutting tables.

The right type depends on the mill’s product mix. A mill making basic T-shirt fabric needs standard machines and speed. A mill making fashion jersey needs jacquard capability. A mill supplying fabric for digital printing may prefer open-width output.

Key Parts That Affect Machine Performance

A single jersey knitting machine is a system of precision parts. The parts that matter most are the ones that touch the yarn and the ones that drive the needles.

Cylinder and Needles

The cylinder holds the needles in vertical slots around its circumference. The cylinder diameter and gauge — needles per inch — determine the fabric width and fineness. A 34-inch cylinder with 28 gauge is a standard configuration for jersey fabric. The cylinder must be machined to tight tolerance because needle movement depends on the slot accuracy.

Needles wear and need replacement. Latch needles, the most common type, require regular inspection because a bent latch creates dropped stitches and fabric defects. The needle brand and material affect how long a set lasts under continuous production.

Cams and Cam Track

Cams control needle movement. As the cylinder rotates, the needles pass through the cam track, which pushes them up to receive yarn and pulls them down to form the loop. The cam profile determines stitch length and loop shape. Worn cams produce uneven stitches, and the problem is hard to diagnose because the defect appears in the fabric, not on the cam.

Yarn Feeders

Positive yarn feeders control the amount of yarn entering each feed. A consistent feed rate is what keeps stitch length uniform. If one feeder delivers more yarn than the others, the fabric shows a visible stripe in the direction of knitting. Modern machines use storage feeders that maintain constant yarn tension, which is essential for high-speed operation.

Needle Selection System

On jacquard machines, the electronic needle selection system determines which needles knit, tuck, or miss at each feed. The selection components — actuators, selectors, and the control software — must respond at high speed without errors. A faulty selection system produces random pattern errors that are difficult to trace.

Take-Up and Winding

The take-up mechanism pulls the fabric away from the needles at a controlled rate. The winding unit rolls the finished fabric onto a beam or into a truck. If the take-up tension changes, the stitch length changes with it. The winding tension matters because excessive pull distorts the fabric before it reaches finishing.

A buyer should ask which of these parts the manufacturer produces in-house and which are sourced. Precision parts — cylinders, cams, feeders — that are machined in-house are usually held to tighter tolerances than outsourced components.

Gauge, Diameter, and Feed Count

Three specifications define what a single jersey knitting machine can produce: gauge, cylinder diameter, and number of feeds.

Gauge is the number of needles per inch. A 24-gauge machine produces heavier fabric suitable for outerwear. A 28-gauge machine is the standard for T-shirts and sportswear. A 32-gauge machine produces fine, dense fabric for premium garments and technical textiles. Higher gauge means finer yarn and smoother fabric, but the machine requires cleaner yarn and more careful maintenance.

Cylinder diameter determines the fabric width. Common diameters range from 26 to 42 inches. A 34-inch machine is the most common size in commercial production because it balances fabric width with machine speed. Smaller diameters suit narrow tubular fabric for rib collars and cuffs; larger diameters produce wider fabric for bedsheets and wide-width garments.

Feed count is the number of yarn feeds around the machine. A machine with more feeds knits more yarn per revolution, which increases output. A 34-inch single jersey machine typically carries 90 to 108 feeds. More feeds also means more yarn tension points, so the machine needs better feeders and more careful tuning.

The combination of gauge, diameter, and feed count sets the machine’s productivity and its fabric range. A buyer should match these specs to the yarn counts and fabric weights the mill plans to run. If the mill runs fine yarns for lightweight jersey, a high-gauge machine with more feeds is the right choice. If the mill runs heavy yarns for winterwear, a lower gauge with fewer feeds is more practical.

For a detailed breakdown of machine pricing by configuration, see this single jersey knitting machine price guide.

Single Jersey vs Double Jersey: What to Check Before Buying

The comparison matters because the two machine types produce different fabric structures and serve different markets. A single jersey knitting machine has one needle bed. A double jersey machine has two.

Fabric structure. Single jersey fabric has a smooth face and a looped back. Double jersey fabric — interlock, rib, or purl — has loops on both sides and is thicker, more stable, and less stretchy in width.

Machine complexity. A single jersey machine is simpler to operate and maintain. A double jersey machine has a dial and cylinder that must run in perfect synchronization, which adds setup time and maintenance cost.

Output speed. Single jersey machines run faster for the same diameter and gauge. The simpler needle path and single needle bed allow higher rpm and more linear meters per hour.

Fabric use. Single jersey is for T-shirts, underwear, and lightweight sportswear. Double jersey is for polo collars, cuffs, waistbands, and heavier garments that need structure.

A mill that produces basic T-shirt fabric should start with single jersey machines. A mill that produces collars, cuffs, and structured garments needs double jersey capability as well. Some mills run both side by side because the fabric types are complementary and the same finishing line handles both.

What to Ask the Manufacturer Before Buying

Machine quality is hard to judge from a brochure. These questions surface the information that matters.

Which parts do you machine in-house? The cylinder, cams, and yarn feeders determine machine precision. A manufacturer that machines these in-house controls the tolerances. A manufacturer that buys them from third parties has less control over quality and lead time.

What is the actual speed range? Speed claims mean nothing without the gauge, diameter, and fabric type attached. Ask for the speed range at the gauge you plan to run, with the yarn count you plan to use.

What is the expected needle life? Needle life depends on machine speed, yarn quality, and maintenance. A manufacturer should give a realistic needle replacement interval, not a best-case number.

What spare parts are included with the machine? A new machine should ship with a spare parts kit — needles, sinkers, cams, belts. The kit’s contents indicate whether the manufacturer expects the machine to run continuously or sit in a showroom.

What support comes after installation? Installation, commissioning, and operator training determine how quickly the machine reaches full production. Ask whether the manufacturer sends engineers to the mill, and for how long.

What is the lead time? Standard single jersey machines ship from stock or short production runs. Custom configurations — special gauges, extra feeds, jacquard systems — take longer. The lead time should be confirmed before the order is placed, not after.

A single jersey knitting machine is a long-term production asset. The purchase price matters, but the machine’s uptime, fabric quality, and spare parts availability matter more over a five-year operating period. That is why the buyer should evaluate the manufacturer as carefully as the machine specification.