Johnson-Fluiten R-RH Series Rotary Joints allow you to transfer an under pressure fluid from a stationary part to a rotating part of a machine without leaking.
They are mainly differentiated on the basis of the number of passages, the type of fluid, the operating conditions (pressure and temperature, rotation speed), the environment and the intended use: they are used in plastics plants , in paper and printing industry, in chemical industry, in food production, pharmaceutical applications, agricultural equipment, washing plants, automotive plants, steel production plants, textile industries, rubber, packaging, machine tools, automation and robotics.
Johnson-Fluiten rotary joints are generally composed of the following parts:
The body is equipped with one or more inlet passages, generally threaded, which flexible inlet / outlet hoses will be connected to.
In the case of several passages, the inlet serves to introduce the fluid, while the outlet through the internal siphon tube to extract the fluid from the cylinder or roller which the joint is installed on.
The rotor is the component that carries the fluid through its connection to the cylinder / roller. It can be threaded or flanged and will generally turn with the cylinder / roller. In the case of a threaded rotor it is necessary to pay attention that the direction of rotation favors the locking of the coupling, for this reason select a thread with clockwise screwing (RH) when the rotation of the cylinder / roller is anticlockwise (looking at the components from the rear side of the rotating joint) , one with counterclockwise (LH) screwing when rotation is clockwise. The rotor with the "Q" flange simplifies the assembly of the coupling as the right or left thread of the rotor is no longer necessary, reducing storage and maintenance costs
An important part of the rotating joint are the bearings which have the important task of keeping the joint aligned during rotation. The R series rotary joints have bearings pre-lubricated for life at the factory, while the RH series joints have the body equipped with a grease nipple and must periodically be re-greased to restore the lubricant consumed. There are some bearingless rotary joints for high temperatures that use graphite sliding bushings.
The heart of the rotating joint is the sealpackage which has the task of preventing the fluid from escaping from the joint itself during operation. Johnson-Fluiten rotary joints use different types of seals for each operating condition with the possibility of choosing different sealing faces:
With elastomeric seals made of viton, aflas and perfluorelastomer.
Our rotary joints feature a quick-change design (QRD) that allows you to service the joint while it is still installed on the machine.
You only need to remove the locking screws and separate the body to replace the SEAL rings and O-rings and springs WITHOUT HAVING TO REMOVE THE ROTARY JOINT FROM THE MACHINE.
This solution also allows the rotary joint to be quickly adapted to fluids that require DIFFERENT sealing materials.
The micro-lapped mechanical seal ensures uniform and complete passage of fluid by lubricating it. The R joint is capable of continuous dry operation.
Learn how easy it is to perform routine maintenance to our R/RH joint , in this video we will explain how to replace the seal rings quickly thanks to the special design of our rotary joint.
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