Rieter Air-Jet Spinning Machine J 26

Automated Air-Jet Spinning Machine J 26

Economical yarn production with a flexible machine

The fully automated, double-sided air-jet spinning machine J 26 with 200 spinning units, 6 robots and a delivery speed of up to 500 m/min ensures economical and flexible production.

The winding unit allows the production of cylindrical or conical packages with uniform density, heavy weight and soft edges for optimal performance in downstream processing. The system is rounded off with either the Rieter yarn clearer Q 10A or Q 20AF, which have been specially adjusted for air-jet spinning.


200 spinning units, a delivery speed of up to 500 m/min and 6 robots ensure the most economical production process. The single-drive concept for the spinning and winding unit ensures optimal energy usage. Monitoring the suction motor allows energy savings of up to 15%.


The double-sided machine concept with cans underneath the machine saves up to 50% more space and reduces spinning mill operating costs.


The unique Com4®jet yarn structure provides benefits both in downstream processing and in the fabric. Technological innovations mean that fabric softness can be adjusted. The proven Rieter yarn clearer Q 10A or Q 20AF is now integrated into the J 26. All standard clearer functions and special monitoring channels for detecting foreign fibers are available.


With the new edge displacement, packages have uniform density, a heavier weight and soft edges for optimal performance in downstream processing. The automated piecing system uses the proven principle of progressive fiber feeding to create stronger, yarn-like piecings that are undetectable in fabrics.


The J 26 can be supplied with cylindrical or conical winding. The conical packages with 4 20 offer processing advantages in knitting and weaving mills.


Independent machine sides with different settings for all parameters and independent tube loading enable two different articles to be produced at the same time.

Higher Flexibility

J 26 air-jet spinning machine – 100 % polyester spinning

Spinning 100 % polyester

With the new P 26 attachment 100 % polyester can be spun on J 26. The P 26 system applies liquid to the fibres in front of the twisting zone. This liquid creates benefit for:

• reducing polyester deposits on the technology components
• prolonging production times with stable yarn quality
• higher yarn strength
• lower yarn hairiness

The P 26 system is connected to tap water which is filtered so that no sediments can enter the system. The integrated Rieter clearer Q 10A checks the yarn quality. Special clearing channels monitor the P 26 system at each spin unit.


A male function of the P 26 system, e.g. insufficient liquid supply, causes fast changes in the yarn hairiness. This will be reliably detected by a special algorithm of the Q 10A customised channels.

Spinning Yarn with Quality and Quantity

Com4®jet yarn novel structure at high productivity

Increased productivity due to:

• machine length of up to 200 spinning units
• up to 6 robots
• production speed of up to 500 m/min
• automatic piecing preparation (APP)


The advances of the J 26 air-jet spinning machine concept aim to increase the productivity of the machine but at the same time reduce demands on the robots or operating personnel for operating the machine.

Automatic piecing preparation (APP)

The J 26 machine features the APP system, which automates piecing preparation on the unit in the event of a quality cut. The unit prepares itself for the piecing process before the robot arrives. For the majority of ends down due to quality stoppages, the piecing cycle is therefore reduced by half. The shorter piecing cycle thus makes piecing more efficient and enables the robots to serve more spinning units.

Com4®jet soft yarn

With the Soft Yarn setting the Com4®jet yarn and the fabric get a soft touch. Lower spinning air pressure, higher delivery speed and adapted technology components result in soft yarns as well as in 10 % lower conversion costs. The low hairiness and the good pilling resistance are maintained.

Customised Solution for Air-Jet Yarn Clearing

Rieter Q 10A yarn clearer

With 15 years of experience and 1 million of sensors in operation Rieter is launching a yarn clearer specially designed for airjet spinning. In addition to standard clearing channels and spectrograms the Q 10A has the following features.

• Special clearing channel detecting very fast yarn surfaces changes caused by spin nozzle blockages. The detection is within 10 m and the fault can be removed easily.

• Unlike any other yarn clearing sensor, Q 10A provides a direct digital output out of the measurement. This guarantees maximum exactness in detecting yarn fault size, e.g. small but long yarn count deviations.

• Q 10A supports and monitors with a special channel the proper function of the new polyester attachment. The Q 10A detects smallest yarn deviations caused by malfunction of the attachment.

• A specially designed spectrogram helps to set individual limits for warnings and alarms and provides reliable detection and data to analyze the cause of periodic faults.

Piecing Technology

Yarn-like piecings always checked for quality

The downstream process requires packages tested for yarn and piecing quality for best performance and fabric quality. The yarn produced on the J 26 is 100 % checked for quality before it is wound on the package. The same applies to the yarn piecings.


Optionally the J 26 can be equipped with the Rieter optical Q 10A yarn clearer. Alternatively the Uster QC2 with capacitive or optical yarn clearer sensor can be ordered for the J 26. Depending on quality standards, it can optionally also feature foreign fibre detection.

Yarn-like piecings

The quality of the piecing is defined by its strength and shape where yarn figures are the benchmarks. The piecing process on the J 26 is fully automated and features fibre end preparation and Progressive Fibre Feeding (PFF) of new fibres. The PFF executes a process where fibre integration is optimally coordinated.


The yarn clearer checks each piecing for mass, i.e. diameter, and length, and guarantees that the piecing meets the requirements of downstream processing in full.

Cost-Saving Concept

Space and energy savings, more package weight and longer life-time


The two-sided J 26 air-jet spinning machine with large 20˝ diameter cans under the machine requires much less floor space for the same out put compared to the competitor installation. This results in higher productivity for the same space, lower construction costs and also reduced air-conditioning costs.


The drive concept is based entirely on individual drives. In case of an end down, a quality cut or during maintenance work the spin unit consumes no unnecessary energy or compressed air.


The energy increase for vacuum is permanently monitored. Warning is given when the economical limit is exceeded. This can safe up to 15 % of energy. Long machines are equipped with a zoning suction system making sure the level of suction is uniform along the complete machine length and saving extra 5 % energy.

Prolonged components’ life-time

The unit is equipped with the unique, patented traversing mechanism. The components (condensers, spinning nozzle, APP nozzle and yarn clearer) traverse slowly from side to side and continuously guide sliver and yarn. This has a significant effect on the lifetime of top rollers and aprons. As a result, maintenance work and spare parts costs are considerably reduced and quality is assured for a longer period.


The ways to produce yarn economically

Up to 108 % more output and 128 % higher contribution margin for the same production space

High productivity in combination with other cost-saving concepts provides the lowest yarn manufacturing costs and highest margins for applications. With the same available floor space, as in the example below of an 8 500 m2 mill, output of the J 26 machine is up to 108 % higher and production margins up to 128 % higher compared to other air-jet spinning machines.

Lower labour costs thanks to:

• operator friendly machine concept of doublesided machine
• time saving sliver replacement
• less spin unit maintenace with the traversing system
• less package handling with heavyweight packages
• less package transport costs with heavyweight packages

Lower energy costs thanks to:

• optimised suction system, single drives and intelligent drive control
• reduced consumption of compressed air
• high production speeds

Less auxiliary costs thanks to:

• less spare parts thanks to the patented traversing system
• less number of empty tube thanks to high weight packages

Less capital costs thanks to: 

• less floor space – less illumination and airconditioning costs per kg of yarn
• high production speeds

Independent Machine Sides

Spinning two yarn qualities simultaneously

Machine with independent sides comprising:

• independent machine settings and shift reports
• independent suction channels and waste collection boxes
• individual spinning air pressure setting
• independent empty tube supply
• two package conveyor belts

Optimised packages

The independence of two machine sides provides flexibility of operation, i.e. two completely different articles can be spun at the same time. The independent tube supply and separate package conveyor facilitate the work of operators. Productivity savings can be achieved when conducting spinning trials and changing production schedules.


The new edge displacement makes package density more homogenous and edges softer. This is a prerequisite of best performace in weaving and knitting. Homogenity and soft edges enable excellent dye penetration.


Heavyweight packages 0f 300 mm diameter and up to 4.5 kg with the optimised package winding function reduce the number of package changes and thus increase machine productivity. For shipping, the more efficient utilisation of a container results in cost savings of about 20 %.

Easy Operation

Clear and simple operating layout

The J 26 machine is built with two-sided sections, head stock and foot stock. The cans are located under the machine. The sliver can is therefore placed close to the associated spinning unit. The operator therefore has a clear overview of the complete position when checking the unit, feeding in the sliver or changing the can.


The size of the cans and the high capacity of the tube loader significantly reduce operator efforts. The short path from the can to the drafting unit eliminates the risk of false drafts. This is extremely important especially for fine slivers drafted at high speeds.

Robot service concept

In case of 4 robots per machine each is allocated to a service position at the foot or head stock. For the machine with 6 robots the working range of the 3 robots per side can be flexibly set. If a downtime with the centre robot occurs, the 2 outer robots take over the servicing of the entire machine side – the centre robot automatically opens the way on one side or the other.

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Rieter Air-Jet Spinning Machine – J 26