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Rostfri.nu DIN 6799-låsringar i rostfritt AISI 420-stål för radiell låsning av axlar i industriella applikationer.
Rostfri.nu teknisk specifikationstabell och måttritning för DIN 6799-låsringar i rostfritt AISI 420-stål.
Rostfri.nu teknisk specifikationstabell och måttritning för DIN 6799-låsringar i rostfritt AISI 420-stål.
Rostfri.nu DIN 6799-låsringar i rostfritt AISI 420-stål för radiell låsning av axlar i industriella applikationer.
Rostfri.nu teknisk specifikationstabell och måttritning för DIN 6799-låsringar i rostfritt AISI 420-stål.
Rostfri.nu teknisk specifikationstabell och måttritning för DIN 6799-låsringar i rostfritt AISI 420-stål.

Retaining ring | AISI 420 | DIN 6799

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SKU: 101592
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Description

If you are looking for a shaft locking element that provides direct axial locking of components in demanding environments without rusting, the DIN 6799 retaining ring in stainless steel is a reliable choice. It is manufactured from AISI 420 martensitic stainless steel and designed to withstand moderate humidity, temperature fluctuations, and mechanical stress. The product's design includes a spring-loaded claw design that grips into grooves on the shaft and enables easy installation with standard tools. The retaining ring is used where durability and a certain level of corrosion resistance are crucial – especially in industrial environments, machine building, and workshop applications.

AREA OF USE

The DIN 6799 retaining ring is intended for secure fastening and locking of components such as wheels, washers, or bearings on shafts in environments such as workshops, production lines, machine fleets, and equipment exposed to light moisture, dirt, or vibration. The spring-loaded construction creates a secure, vibration-resistant, and removable attachment without the need for threads, nuts, or additional fittings. The product is installed using standard flat-nose pliers or special retaining ring tools, directly into a groove on the shaft according to DIN 6799. The product requires minimal maintenance and has a long service life when correctly installed and sized.

TECHNICAL SPECIFICATIONS

• Product type: Retaining ring (locking spring for shaft)
• Standard: DIN 6799
• Grade: AISI 420
• Material class: Not specified (martensitic stainless steel)
• Thread type: Not applicable
• Surface treatment: Untreated (natural stainless steel)
• Head shape: Not applicable
• Grip type: Not applicable

FREQUENTLY ASKED QUESTIONS (FAQ)

What is a retaining ring (DIN 6799) and how does it function for shaft locking?

DIN 6799 (corresponds to ISO 8744) specifies the standard for external retaining rings for shafts without pliers:

  • Radial assembly: Unlike standard circlips (DIN 471) that are slid on from the end of the shaft, the retaining ring is mounted radially (from the side) directly into a machined groove on the shaft.

  • Three-point grip (claw design): The washer's crescent-shaped spring body has three internal prongs/claws that grip firmly against the bottom of the groove and create a secure axial stop for, e.g., gears, pulleys, bearings, or linkages.

  • Compact profile: Takes up minimal space axially, making it ideal for tight machine designs.

Why are retaining rings manufactured from AISI 420 (1.4021 / 1.4034) martensitic stainless steel?

Retaining rings require a unique combination of high spring tension and corrosion protection that standard austenitic steels (like A2/A4) cannot offer to the same extent:

  • High spring elasticity & hardness: AISI 420 is a hardenable martensitic steel. It gives the retaining ring the high yield strength and resilience required for the claws to flex during installation and then grip with maximum clamping force without being permanently damaged or losing their shape.

  • Mechanical wear resistance: Resists high axial shock loads and frictional wear from rotating components.

  • Moderate corrosion protection: Withstands moisture, oils, grease, and condensation in workshop and industrial environments without being weakened by surface rust.

What is the best way to install and remove a retaining ring?

  1. Installation: Use a suitable retaining ring plier or an applicator for the correct size. Position the opening of the ring against the groove and press radially until the retaining ring snaps into the bottom with a clear click.

  2. Removal: Insert a flat-head screwdriver or a curved awl into the notch on the back of the ring and pry carefully outwards.

  3. Important considerations: Always check that the width and diameter of the shaft groove match the nominal dimensions of the retaining ring exactly (dimension d2 in the table) to ensure it does not wobble during operation.