What is Quick Replacement Design (QRD) and why is it the winning feature of Johnson-Fluiten rotary joints?

Johnson-Fluiten rotary joints have a feature that sets them apart from competitor products and which today represents a real competitive advantage for all customers.

Let's find out, thanks to the collaboration of COLINES Spa, how and why this solution represents a real GAME CHANGER for machine and plant manufacturers in the rubber and plastics industry.

K2022, the most important trade fair for the plastics industry, has just come to an end in Düsseldorf, Germany. Leading companies in the plastics and rubber machinery industry had the opportunity to meet and discuss news, trends and innovation. 

Johnson-Fluiten was represented by COLINES spa, a group that leads the industry worldwide in the design and production of extrusion lines using 'cast' and 'blown' technologies. In the large exhibition booth set up for this event, COLINES spa reserved a space for one of its most important strategic partners for mechanical components and, in a special corner, Johnson-Fluiten was able to show some of its products that currently equip the latest machines and production lines for plastic and pvc.

What components are used for these machine applications?

Johnson-Fluiten's R - RH series rotary joints, are used in plastic extrusion lines, PVC machines and bubble warp production, and are today's best solution for handling water and thermal oil for these product heating or cooling applications.

Why these Johnson-Fluiten rotary joints are so popular in these applications?

The rotary joints that Johnson-Fluiten provides for manufacturers of plastic lines and machines have unique qualities; the components are developed with the specific needs of the application in mind. In particular, the most successful products in this sector are the R and RH series rotary joints with BALANCED SEAL in 4" or 5" diameter.

These Rotary Joints work with water or diathermic oil, their performance has been carefully designed for cooling and heating applications for plastic or rubber based products, and they are designed for achieving the best cost/benefit ratio available on the market for this type of component.

What are the unique features of these rotary joints?

Knowing the specific details of the application is a key requirement for creating tailor-made solutions for the plastics and rubber machinery sector, and Johnson-Fluiten's technical team can rely on proven experience in the field. For this reason, rotary joints of the R - RH series have seal springs that are NOT in CONTACT with the process fluid; this is very important because the water used (even if it is very clean) over time, with use, leaves behind substances ( such as lime, dirt, etc.) that would eventually block this spring and prevent the correct load in the mechanical seal.

In addition to this feature, Johnson-Fluiten's R-RH series rotary joints have been developed with the Quick Replacement Design (QRD); in other words, the entire component has been designed to allow rapid replacement of the mechanical seal.

It was possible for the Johnson-Fluiten staff to develop this solution thanks to the partnership with the Research and Development Department of FLUITEN spa, a leading designer and manufacturer of balanced MECHANICAL SEALS of the highest standard. It is only by combining the know-how of different experts that Johnson-Fluiten is able to generate original and innovative solutions that represent added value for the customer.

Why is this a huge advantage for the customer?

The advantage for users of Johnson-Fluiten R - RH series rotary joints is considerable; the machine equipped with QRD rotary unions will benefit from extremely short maintenance times compared to the same machine with standard components.

The big difference can be found in the design of the Johnson-Fluiten rotary joint; thanks to its construction, it is enough to remove the clamping screws and separate the body to replace the seals and O-rings WITHOUT HAVING TO REMOVE THE ROTARY JOINT FROM THE MACHINE.

Allowing the rotary joint to be repaired while still installed on the machine represents a considerable TIME SAVER for the operator and therefore a significant MACHINE DOWNTIME REDUCTION and a cost and efficiency benefit.

Using Johnson-Fluiten rotary joints for water or oil on these machines is also an investment in the SAFETY of the operator; not having to remove the entire joint avoids the handling of heavy mechanical components, and with that all the risks associated with this maintenance procedure.

Discover the expertise of our specialists

Are you in the PLASTIC MACHINERY sector? Deal with someone who has become a benchmark in the rotary joint market; experience, flexibility, customisation and the highest quality standards are the essential features to be able to provide products and services in highly competitive markets.

Contact our customer service to request advice from our experts or fill in the form to request a quote, if you need information we are also available on +39 02 3394091