Rotary Union ROTODISK S

Single passage Rotary Union with axial mechanical seal

Your benefits with Rotary Union ROTODISK S

Extremely long service life

ROTODISK S unions are fitted with extremely wear-resistant hydrostatically relieved silicon carbide mechanical seals to ensure low frictional torque and minimal wear, accordingly. An automatic self-alignment system ensures that the axial face seals always have full surface contact – even when subject to high pressures and high speeds at the same time.

Reliable and robust

The micro-gap system allows emulsions to be switched off without any leakage impulse, permitting the system to run dry at full speed without being pressurized by medium pressure. Spindle or hybrid ball bearings installed in high-precision steel housings ensure robust and smooth running.

Maximum flexibility

To facilitate the transmission of different media such as emulsion, air or oil-air mixture, we offer a variant capable of handling all three operating modes. Integrated valves switch between the different media.

Technical data

MediaEmulsion, air, oil, oil-air mixture, water, low vacuum
Max. number of channels1
Max. pressure [bar]200
Max. speed [rpm]100,000
Rotary Union ROTODISK S-AK
ROTODISK S-AK
Suitable for operation with up to 3 media, leakage-free operation
Rotary Union ROTODISK S-HP
ROTODISK S-HP
Specifically designed for high pressures occurring during deep-hole drilling
Rotary Union ROTODISK S-EBS
ROTODISK S-EBS
Cartridge design without ball bearings
Rotary Union ROTODISK D10
ROTODISK D10
Special variant for grease, also available with 2 channels

Rotary Union:

Rotary Union ROTODISK S for machine tools
ROTODISK S1-AK
Rotary Union ROTODISK S
Speed [rpm]20,000
Sealing systemAxial mechanical seal
HighlightsSuitable for operation with up to 3 media, automatic switching between media
Number of channels1
MediumEmulsionAirOil-air mixture
Pressure [bar]801010
Rotary Union ROTOKOMBI for machine tools
ROTOKOMBI SW25 L1W2X1 + S0
Rotary Unions ROTODISK SW/ROTODISK S
Speed [rpm]6,000
HighlightsExtremely compact design, simultaneous transfer of different media
Rotary Union ROTODISK SW
Sealing systemAxial mechanical seal
Number of channels121
MediumAirWaterHydraulic oil
Pressure [bar]102020
Rotary Union ROTODISK S
Sealing systemAxial mechanical seal
Number of channels1
MediumEmulsion
Pressure [bar]120
Rotary Union ROTOKOMBI for steel
ROTOKOMBI M80 EX2 + M60 EW1 + D10
Rotary Unions ROTOSTAT E/ROTODISK S
Speed [rpm]490
HighlightsExtremely robust, for high flow rates
Rotary Unions ROTOSTAT E
Sealing systemRadial gap seal
Number of channels21
MediumHydraulic oilWater
Pressure [bar]2904
Rotary Union ROTODISK S
Sealing systemAxial mechanical seal
Number of channels2
MediumGrease
Pressure [bar]250

Our products in detail
PreviewTitelLanguageSizeDownload
Flyer ROTODISK S
Rotary union with axial mechanical seal
English1.8 MBPDF
Flyer ROTOKOMBI
Multi channel rotary union combining different sealing technologies
English2.2 MBPDF
PreviewTitelLanguageSizeDownload
Product CatalogueEnglish5.0 MBPDF
Product CatalogueChinese6.1 MBPDF
Your industry - Our product solutions
PreviewTitelLanguageSizeDownload
Flyer Machine ToolsEnglish1.7 MBPDF
Flyer Machine ToolsChinese1.8 MBPDF
Flyer Industry 4.0
Integration in networked systems to enable process-controlled maintenance and reliable transfer of high data volumes in real time
English1.4 MBPDF