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PAGUAG PAGUFLEX®: Origin, Evolution and the Registered Trademark Guarantee
In this article, we aim to clarify the of the Paguag Paguflex brand evolution, origin, and its registration as a commercial trademark. Our goal is to provide accurate and detailed information, eliminating any possible confusion for potential buyers and ensuring maximum transparency on the historical and identifying path of this brand.
1. From Paguag to the Paguflex®
For decades, the name Paguag has been a benchmark in the mechanical industry for high-quality flexible couplings and anti-vibration components. Larosi has not only been an official distributor of Paguag and PSA (Pirelli Anti-Vibration Systems) industrial spare parts, but also a strategic partner that ensured constant availability of original components on the market.
This decades-long partnership allowed Larosi to accumulate deep know-how on the technical specifications and construction philosophy that made these couplings synonymous with reliability.
When the historic Paguag company ceased operations and later the CF Group stopped manufacturing flexible couplings in the pre-pandemic period, a significant gap was created in the market.
Recognizing the crucial importance of these spare parts for thousands of industrial machines in operation, Larosi made a strategic decision: to ensure technical and qualitative continuity. From this initiative, the Paguflex® line was born — a reverse-engineered and improved project that preserves the functional heritage of Paguag while projecting it into the future with enhanced specifications and higher-performing materials.
2. Paguflex®: Registered Trademark, Official Production and Authenticity Guarantee
Today, Larosi is no longer just a distributor but the official manufacturer and exclusive worldwide distributor of Paguflex® couplings. This change of role is formalized by the registration of the Paguflex® name as a registered trademark and protected by intellectual property rights. All rights of production, distribution, and intellectual property belong exclusively to Larosi and its global network of authorized partners and distributors.
Importance of the Registered Trademark for the Customer
For the end customer, the Paguflex® registered trademark represents a dual guarantee:
- Continuity Guarantee: every component is designed and produced to be fully interchangeable and compatible with the dimensional and torque standards of original Paguag couplings.
- Quality and Innovation Guarantee: unlike unauthorized imitations, original Paguflex® products are manufactured with modernized processes and state-of-the-art materials, such as Hytrel® (a thermoplastic elastomer) that offers superior chemical and thermal resistance compared with traditional elastomers.
Purchasing original Paguflex® products is therefore possible only through Larosi and its certified network. Unauthorized use of the trademark, its derivatives, or its technical documentation constitutes a violation, and purchasing outside the official network exposes the user to risks of incompatibility and inferior quality.
3. Technical Evolution: Improvements Beyond Continuity
The evolution from Paguag to Paguflex® has not been a simple rebranding but a technical refinement. Larosi’s decades of service experience have made it possible to identify opportunities for improvement:
- Advanced Elastomeric Materials: introduction or expanded use of next-generation technical polyurethane and in particular Hytrel®, extending the operational temperature range (up to +100 °C in some series) and improving fatigue resistance under reverse bending, essential in applications with frequent direction changes.
- Optimized Hubs: steel or stainless-steel hubs produced with tight bore tolerances and chamfered edges to prevent damage (cuts) to the elastic element — a crucial detail for coupling longevity.
- Anti-Vibration Performance: the Paguflex Plus line was developed to offer improved torsional absorption, ensuring superior damping for applications with cyclic loads or highly vibratory motors.
4. Paguflex® Product Range: Classification and Versatility
The Paguflex® line now represents a complete ecosystem of elastic coupling solutions, covering needs from high-precision instrumentation to medium industrial transmissions:
- Double Loop Flexible Couplings (Crazy Eight Couplings): the core of the range, known for simplicity, backlash-free operation, and excellent compensation of angular and radial misalignments.
- Encoder and Precision Transmission Couplings (Series EC, PF48, Puflex EC-coupling): variants optimized for sensitive applications where transmission fidelity and elimination of backlash are fundamental (e.g., servomotors, robotic axes).
- SFC Series – Urethane Flexible Couplings: urethane couplings designed for higher dynamic loads and excellent wear resistance.
- Paguflex Plus: an evolved version combining classic design with a redesigned elastic element for higher nominal torque and greater torsional absorption without compromising misalignment compensation.
All couplings are available in a broad range of standard sizes (e.g., Gr. 10, 20, 30) with calibrated bores (6 mm, 8 mm, 10 mm, 12 mm, etc.) and often with distinctive colors (typically black or yellow) to facilitate identification and standardization of spare parts in stock.
5. Commercial Codes, Historical Names and Cross References
One of the major challenges in the spare parts sector is the proliferation of alternative codes and designations. Over the years, Paguflex® couplings have been identified by a wide variety of names, depending on the distributor, the application context, or the specific series:
- Historical Technical Codes: such as 120000 Type Gr. 10/20/30, GFP 20 10/10, or OEM codes like DKPS 2928 or DKPS 5658. These codes indicate specific sizes and bore configurations.
- Functional Names: designations such as K-Coupling®, Crazy Eight Coupling, or Double Loop Shaft Coupling, which describe the unique geometry of the coupling.
- Internal / Product Nomenclature: direct references to the Paguflex range, such as PF48, PF6-8, P-Flex, or Paguflex Plus 20/30.
It is essential to understand that all these names refer to variants or evolutions of the same technical concept of an elastic flexible coupling. Today, the Paguflex® designation unifies and guarantees the continuous production of all essential versions, ensuring that customers can find the exact spare part they need, regardless of the historical code used.
6. Technical Documentation and Official Support
The reliability of a spare part is not provided only by the physical component but also by the support that accompanies it. Larosi guarantees quality through rigorous technical documentation:
- Exclusive Availability: all catalogs, technical manuals, sizing tables, and product sheets for Paguflex® are available exclusively on Larosi’s official site or by direct request to the authorized network.
- Integrity of Documentation: unauthorized reproduction or distribution of such documentation is prohibited, protecting the end user from confusion caused by incorrect or obsolete specifications.
- Specialized Support: Larosi offers direct technical support, including sizing assistance and consultation for critical applications, coordinating with official distributors to ensure compliance at every stage, from selection to installation.
Conclusion: The Informed Choice of Paguflex®
With the Paguag Paguflex flexible coupling, Larosi does not merely relaunch a product, but renews its tradition in accordance with modern industrial standards. Choosing Paguag Paguflex® means relying on an authentic product that combines proven compatibility with the historic design of Paguag with the benefits of engineering innovation (Hytrel® material, tight tolerances). It is an investment in a product supported by decades of know-how and distributed through an international certified network, ensuring reliability and operational continuity for your machinery.
If you wish to verify the compatibility of a historical code, request technical documentation, or receive a quotation for the most innovative Paguflex® versions, our experts are at your disposal.
Learn more about Paguflex
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