Often unnoticed but essential in many industries: Rotary Unions. There are many applications that require swivels for example car washes, production facilities, hose reels, cleaning systems, hydraulic systems and many more. The various fields of operation set broad requirements for rotary unions. With different designs, nominal widths and sealing materials Mosmatic covers many applications and industries.
How to choose the correct swivel for your application
Due to the diverse requirements for swivels, the available range on the market is huge and can be overwhelming at first glance. In order to find out what swivel may be suitable for your application, you should make considerations on the following points before purchase:
Use our selection guide to find a suitable rotary union or simply fill in the online form with your application details and we will get back to you.
In case you are not able to find the right swivel in our existing product range, we are able to realise customised solutions. With your vision and our in-house R&D Team we will create individual solutions that suit your needs and machines. Fill in our online form as detailed as you can and we will get back to you.
You are looking for detailed measurements or the Step-File (3D model) of a particular rotary union? The Mosmatic Engineering platform was created to help technical drawers and engineers. You can search by different specifications or by the item number.
Inline and 90°
If you are looking for large nominal widths at low RPM, this is the range to look at. Smaller swivels for high pressure applications up to 500bar can be found here as well.
Up to 2000 RPM and 500bar / 7300 psi. This is the section for our high-performance rotary unions, even for underwater applications. Different designs, sealing materials and swivels with up to four bearings are available.
You need a customised rotary union? Maybe with more than one in- and outlet? With your vision and our in-house R&D Team we are able to realise individual solutions that suit your needs and machines. Fill in our online form with your application details and we will get back to you.
„By offering different nominal widths, sealing materials and designs Mosmatic covers a wide range of swivel applications.“
The Benefit of a Mosmatic Rotary Union
For more than 40 years Mosmatic designs and produces Rotary Unions for a wide variety of customers and industries worldwide. The know-how from over four decades is reflected in the form, function and resistance of our swivels. We are proud of our passionate and highly-trained employees who use latest machinery and high-quality materials to manufacture our rotary unions.
Your benefit at a glance
Low torque under maximum pressure
Self-lubricating swivels with warning system
Patented sealing system
Know-How of four decades
Design, production and assembly in Switzerland
Customised solutions possible
Quality assessment with latest 3D measurement technology
Fields of application
Our rotary unions can be found in many industries. Some of them are:
✓ Belt cleaning
✓ Cleaning Equipment
✓ Construction machinery
✓ Fire services
✓ Fishnet cleaning
✓ Food industry
✓ High Pressure Cleaning
✓ Mechanical Engineering
✓ Mining Industry
✓ Municipal vehicles
✓ Paint industry
✓ Sewer cleaning
✓ Tank trucks
✓ Vehicle cleaning
✓ Woodworking Industry
… and many more.
All our swivels are suitable for fluids with a pH-value between 3 – 12 and a filtration of up to 10µm. Compressed air up to 20bar/ 290psi is possible as well. The swivels are available with NBR, EPDM or FKM/Viton seals.
Movie – Live rotation under maximum pressure
Generally speaking our rotary unions are maintenance free. The bearing compartments are sealed which means that there is no need to regrease the swivel. In order to get the most out of your swivel, there are a few small things to consider. We are happy to give you some handy tips how to keep your swivel going.
Warning system for seals
The weep holes on the side of our swivels are not for greasing but to indicate if the seals inside need to be replaced.
When the rotary union is visibly installed
If you see water constantly coming out of the weep holes, the seals inside need to be replaced as soon as possible. Otherwise the grease will be flushed out of the bearing compartment and the swivel will fail and stop spinning.
Contact your Mosmatic dealer to get the right seal kit for your swivel. You learn how to replace the seals in the video below.
When the rotary union is invisibly installed
The weep holes of our swivel types DXTI, DYT und DYU have a female threat. This allows you to divert the water by using a tube or hose.
Our underwater rotary unions are equipped with a special check valve to ensure no outside water can get inside the swivel. This contributes to the longer life of your swivel.
The seals build the core of our swivels. They enable the swivel to rotate while being leak-proof.
The swivel has to withstand different variables like pressure, throughput medium and temperature. To get the most of your swivel the seals and O-rings need to be replaced from time to time. This way you protect the bearings and extend the life of your rotary union.
The function of the bearings is to absorb axial and radial forces. The bearing compartments are sealed with O-rings to avoid grease from being flushed out.
If you miss to replace the O-rings, the compartment will get flushed and the bearings will run without lubrication. Ultimately this will lead to failure of the swivel.
Besides the seal kit we also offer Bearing Kits for some swivel types.
The Repair Kit is available for a few of our rotary unions and includes the Seal and Bearing Kit.
The models mentioned are just a section of a wide range of Mosmatic products. While visiting our website, have a look at other products like the Wheelblaster Series, High Pressure Lances, Car Wash Equipment or Duct Cleaner.
We look forward to hearing from you.