Automated Air-Jet Spinning Machine J 70

Flexible production with autonomous spinning units

Highly-efficient and stable yarn production
Up to 50% higher fiber yield
Simultaneous production of four lots on one machine

Introducing J 70

The revolutionary double-sided air-jet spinning machine J 70 with up to 200 autonomous spinning units and four robots allows production speeds at unmatched 600 m/min. Newly developed technology components provide increased delivery speeds in all applications.

The VARIOlot option offers maximum flexibility to simultaneously spin four lots with independent settings at a time on one machine (two per machine side).

Further reduced energy consumption, highest fiber yield and a low space requirement significantly reduce the overall yarn manufacturing costs.

J 70 key features

Air-Jet Spinning Machine J 70 spinning units

Best possible production efficiency

200 individually automated spinning positions, four robots and delivery speeds of up to 600 m/min ensure independent, economical yarn production. A high level of yarn breaks at high speeds is mastered with ease, and productivity is kept stable.

With the air-Jet spinning machine J 70, production costs are significantly reduced thanks to decreased energy consumption and up to 50% higher fiber yield compared to the competition.

Newly developed technology components set new benchmarks in air-jet spinning, allowing an unparalleled increase in delivery speed across all applications.

Quality assurance with the next generation yarn clearer

The J 70 raises yarn quality to a high level. The new generation yarn clearer Q 30A enables optimal setting of the cleaner limits to make sure that only top-quality yarn makes it onto the package and into downstream processing.

The modified twist element significantly reduces the risk of producing weak yarns. The building of packages with smooth unwinding behavior was made possible by further improving the winding on the J 70. With delivery speeds reaching 600 m/min, hard packages with high weight as well as dye packages can be produced directly on the air-jet spinning machine.

Air-jet spinning machine J 70 tube loader

Simultaneous production of four different lots per machine

Highest Flexibility is given through the VARIOlot software option. Two lots per machine side can be spun independently and up to four lots simultaneously on one machine.

With the new generation yarn clearer Q 30A, spinning mills gain a novel kind of flexibility to respond to any changes. The Q 30A is available with the options “foreign fiber” and “weak yarn detection” – which can also be retrofitted later without having to replace the yarn clearer.

Step precision winding allows producing dye packages directly on the J 70 and also high weight packages with a tight diameter, which reduce transport costs.

Technical specifications

Technological data

Parameter	Range/Unit
Yarn count [Ne]	16 - 70
Raw material	Combed cotton, cellulosic fibers, blends of combed cotton with cellulose, blends of combed cotton with polyester (PES ≤ 65%), blends of cellulose with PES (PES ≤ 80%)

Technical data

Feature	Description
Delivery speed	up to 600 m/min

Machine specifications

Feature	Description
Number of spinning units	up to 200
Number of robots	2, 4
Machine concept	Double-sided machine with sectional structure
Drive concept	Individual drives for each spinning and winding unit
Traversing system	Traversing of sliver and yarn in the drafting zone by 3 – 4 mm
Package dimension	Cylindrical packages up to 300 mm in diameter and 4.5 kg weight

Frequently asked questions

When will Rieter introduce the conical winding system for the J 70?

The launch is scheduled for 2026.

Why is the polyester blend ratio limited to a maximum of 80%?

To ensure a stable yarn formation process and prevent fiber deposits on critical technology components when processing blends with polyester fibers.

When changing yarn counts, which components, settings, and parameters need adjustment?

It is necessary to adapt the spin tip diameter, cradle clip distance, draft settings, and production speed.

What consumable lifetimes (cots) can be expected with spinning speeds > 550 m/min?

For example, delivery roller cots can achieve lifetimes exceeding 2 000 hours without grinding.

Com4 yarns

Yarns for the most exacting requirements that ensure competitiveness in a dynamic market are Com4 yarns. Spun on Rieter ring, compact, rotor or air-jet spinning machines the Com4 yarns are characterized by excellent quality. Rieter customers profit from optimized production costs and good selling outlets.

After Sales

Upgrades and retrofits

To improve lifetime, productivity and/or quality of existing equipment, Rieter offers modernization solutions: retrofits and upgrades which restore or enhance the original machine performance.

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After-sales services

Discover Rieter’s comprehensive after-sales services – including training, repair services, performance optimization, and global technical support.

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Downloads

Automated Air-Jet Spinning Machine J 70 – Brochure

English
PDF / 6 MB

J 70 news

October 23, 2025 - Air-Jet Spinning

J 70: Efficient Air-Jet Spinning of Carded Cotton

The Rieter air-jet spinning machine J 70 makes spinning carded cotton economically possible, thanks to a newly developed twist element that increases speed, yarn strength, and fiber utilization.

March 17, 2025 - Air-Jet Spinning

Yarn Clearer Q 30: Key to High-Quality Yarns and Efficient Production

The new yarn clearer Q 30 for rotor and air-jet spinning ensures top yarn quality, longer production times, and less maintenance, thanks to advanced detection technology.