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Rotary Seal, inside sealing DS-I

Rotary Seal, inside sealing DS-I

Rotary Seal, inside sealing DS-I

Product catalog summary
Overview: The DS-I rotary seal is designed for sealing fast rotating components, offering a space-saving solution with axial lubricant grooves for sufficient lubrication at higher speeds. It is preferred over the DS-A due to its greater static contact surface.
Specifications: The seal requires a smaller gap between rotor and stator compared to the RDI type. The running surface should be hardened to approximately 56 HRC or hard chromium plated depending on specifications and operating conditions.
Materials: Standard materials include FPM, PTFE-P, with alternatives available upon request such as VMQ, NBR, and EPDM.
Application Range: Suitable for rotary feed units with minimal installation space and low friction, without support rings. Smaller versions are possible with simple installation.
Design Hints: The slide ring is expanded over the shaft, and the O-ring is inserted into the groove without twisting. The sealing set should be installed without lubrication, except on the sliding surface of the slide ring.
Surface Finish: Sliding surfaces should have a surface roughness of Ra 0.1-0.3 µm and Rt ≤ 1.5 µm. Groove base and sides have different roughness specifications.
Fitting: The slide ring is pulled over the shaft, expanded, and then inserted into the groove onto the O-ring. The seal should be installed without lubrication, except on the sliding surface.
Order Example: For a standard version with a diameter of 90 mm, the order reference is DS-I 90/101x3.9 with Ref.No. 075829.
Design Table: Provides dimensions for shaft diameter, groove diameter, seal width, and maximum gap size for various pressure ranges.
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Catalog excerpts

Rotary Seal, inside sealing DS-I-1

Rotor-Dichtsatz, innendichtend Rotary Seal, inside sealing Rotor-Dichtsatz, innendichtend Rotary Seal, inside sealing Der schmalbauende Rotordichtsatz DS-I ist speziell für die Abdichtung schnell drehender Maschinenteile ausgelegt. The space-saving rotary seal DS-I is designed specifically for sealing fast rotating components. Ab Profilbreite 3,9 mm verfügt er über axiale Schmierstoffnuten in der Lauffläche, die auch bei höheren Drehzahlen einen ausreichenden Schmierfilm gewährleistet. From profile width 3.9 mm it has axial lubricant grooves in the slide ring surface which guarantee sufficient lubrication at higher speed. Werkstoffbedingt müssen die Spaltverhältnisse zwischen Rotor und Stator enger als beim Typ RDI ausgelegt werden. The gap between rotor and stator must be smaller than that of the RDI due to seal design. Der DS-I weist eine größere statische Haftfläche auf und ist daher dem DS-A vorzuziehen. The DS-I is preferred to the DS-A due to its greater static contact surface. Je nach Anforderung und Betriebsbedingungen empfiehlt sich eine Behandlung der Gegenlauffläche, wie z. B. Härten auf ca. 56 HRC oder Hartverchromen. Depending on the specifications and operating condition it is recommended to have the running surface hardened to approx. 56 HRC or hard chromium plated.

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Rotary Seal, inside sealing DS-I-2

Rotor-Dichtsatz, innendichtend Rotary Seal, inside sealing Werkstoffe Materials elastischer Grundkörper NPR , FMVQ, FFKM, EPDM diverse PTFE-Compounds slide ring NBR , FMVQ, FFKM, EPDM various PTFE-compounds Application Range elastic ring standard hydraulic oils Design Hints Surface Finish Surface Quality Sliding Surfaces Groove Base Groove Sides Der Gleitring wird über die Welle gezogen und dabei etwas aufgedehnt. The slide ring is pulled over the shaft and is thereby slightly expanded. Der O-Ring wird durch einfaches Einlegen in die Nut eingebracht. Es ist darauf zu achten, daß sich dieser dabei...

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Rotary Seal, inside sealing DS-I-3

Rotor-Dichtsatz, innendichtend Rotary Seal, inside sealing gerundet u. poliert rounded and polished elastischer Grundkörper / elastic ring Gleitring / slide ring Bestellbeispiel für Standardausführung: Order Example for standard version: DichtungsNutbreite breite groove width seal width b b1+0,2 Design Table

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