SZ stranding for flexible fiber optic cable production.
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OFC 70 SZ stranding line
SZ-stranding technology for fiber optic cable production
As fiber optic cable designs become more complex, the stranding process must keep tubes, ribbons, and cable elements accurately positioned without adding unnecessary tension or process variation. Stable lay length, low stranding tension fluctuation, and constant binding tension are essential for repeatable cable structure and reliable product quality.
SZ stranding creates the organized cable structure needed for indoor, outdoor, and high-density fiber optic cable designs. The process must also support long production runs, fast set-ups, and flexible cable constructions.
OFC 70 SZ-Stranding Line is designed for SZ stranding of tubes containing fibers or ribbons for a wide range of fiber optic cable applications. With DTSZ stranding technology, advanced line control, and precise binding, the line supports stable lay length, constant binding tension, and low stranding tension fluctuation for reliable cable quality.
The line supports dry and jelly-filled cable constructions and can operate as a stand-alone stranding process or in tandem with jacketing process. In addition to standard SZ stranding, OFC 70 can also be configured for SZ super-bundling of rollable ribbon bundles for high-density datacom cable designs.
DTSZ stranding technology
Enables controlled SZ stranding with low tension fluctuation for stable, repeatable cable quality.
Accurate and stable lay length
Maintains consistent stranding geometry for reliable fiber optic cable structures.
Constant binding tension
Closed loop yarn tension supports delicate cable designs.
SZ super-bundling
SZ super-bundling of rollable ribbon bundles for high-density datacom cable structures.
advantages of the OFC 70 SZ stranding
Unique SZ-stranding technology for high-productivity cable production
Unique DTSZ stranding technology
OFC 70 uses DTSZ stranding technology to create a controlled SZ stranding process for tubes, ribbons, and cable elements. The torsion shaft lay-plate stranding concept, dual cross binders, and line control system work together to support stable, repeatable stranding quality.
Stable lay length and low tension fluctuation
The stranding process is designed to maintain low stranding tension fluctuation and accurate, stable lay length throughout production. This helps manufacturers create consistent cable structures and reliable product quality across different cable designs and long production runs.
Constant binding tension
OFC 70 supports stable binding with closed loop tension control. The binding point is positioned directly after the SZ strander, allowing immediate fixation of the stranded elements and supporting high-quality stranding and binding.
Productivity for long production runs
High production speeds, long batches, reduced set-up times, and less downtime help increase the productivity of the SZ stranding process. Features such as easy-to-thread pay-offs, cop storage in binders, dual yarn binding, recipes, data logging, and line control support efficient operation and repeatable production.
SZ super-bundling for high-density datacom cables
OFC 70 can also be configured for SZ super-bundling of rollable ribbon bundles. This process combines rollable ribbon bundles into structured super bundles for ultra-high-fiber-count datacom and datacenter interconnect cable designs. The controlled stranding process helps create a balanced, well-organized cable structure for reliable high-capacity connections.
Precision & productivity in SZ stranding
with stable lay length, constant binding tension and optional SZ super-bundling for high-density cables
nextrom's special experience
unmatched flexibility, unrivaled expertise
upgradability
Nextrom’s fiber optic cable manufacturing solutions are designed for long-term. Existing systems can be upgraded with the latest automation, process control, and hardware developments to support changing production requirements and next-generation fiber designs.
With dedicated lifecycle support, customers benefit from improved performance, enhanced process stability, and extended equipment lifetime, while minimizing production interruptions and enabling continuous process improvement.
process knowledge
Rely on our dedicated experts, backed by multiple years of combined experience to guide you through commissioning and process training. Our tailored setup recommendations minimize tuning time and speed up your production ramp-up. With a proven global track record and hands-on industry know-how, we ensure you get into full-scale production faster, more efficiently, and with unwavering confidence.
references
We deliver proven know-how to jump-start your production, maintain top-tier quality, and preempt operational pitfalls. Industry leaders repeatedly rely on Nextrom, clear proof of our unwavering reliability and superior performance.
local support
Benefit from truly local teams across the US, China, India, and Europe, each offering quick response times, spare part availability, and support in your local language. With experienced engineers on-site, you’ll minimize downtime, optimize productivity, and have peace of mind knowing expert help is always within reach.
find out more about fiber optic cable manufacturing solutions
Get in touch with our experts and find out more about our solutions
OFC 70 / RL-V
AUFR 3.22 Tyre pay-off stand
| Max. reel diameter: | 2240 mm |
| Max. reel weight: | 3000 kg |
TRS 800 H Horizontal accumulator dancer TRS 800 H
Horizontal control dancer on smooth-running linear guiding
DTP 1000 Dual pay-off for loose tube SZ-Stranding
Flange diameter 800 – 1000 mm
Pneumatical or counterweight dancer
DTSZ 55 SZ-Strander
| Number of stranding elements: | 21 |
| High speed: | +/- 2500 RPM |
| Short reversal time | |
ROBI D290-2 Cross Binder
High speed cross binding with single and dual end yarns
Accurate yarn tension control with closed loop system
NTA Pay-off for water swellable tape
| Tape pad: | 850 mm |
| Traverse wound spool: | width 500 mm, diameter 500 mm |
ROBI D290-R1 Single Binder
High speed cross binding with single and dual end yarns
Accurate yarn tension control with closed loop system
ROCA 820 Caterpillar
TRS 800 H Horizontal accumulator dancer
Horizontal control dancer on smooth-running linear guiding
AUFR 5.25 Tyre take-up
| Max. reel diameter: | 2500 mm |
| Max. reel weight: | 5000 kg |
Benefits of
OFC 70 SZ stranding line
- Productive SZ stranding for tubes containing fibers or ribbons
- Controlled process with low stranding tension fluctuation
- Accurate and stable lay length for repeatable cable structure
- Constant binding tension for stable binding quality
- Support for dry and jelly-filled cable designs
- Stand-alone operation or tandemized production with sheathing
- High production speeds, long batches, and reduced downtime
- SZ super-bundling for high-density datacom cable designs
solutions for OFC 70
- DTSZ stranding technology
- Torsion shaft lay-plate SZ stranding machine
- Dual cross binder technology
- Tube and central member pay-off systems
- Jelly application for jelly-filled cable designs
- Tape pay-off, yarn server, and binder solutions
- Pulling capstan and take-up systems
- Line control system
OFC 70 pictures
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