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DIN 472

DIN 472 is a standard from the German Institute for Standardization (DIN) for retaining rings for bores (internal circlips). It specifies dimensions, tolerances, and mechanical properties for rings used inside bores to prevent axial displacement of components. These rings are available in a wide range of sizes and materials to suit various applications.

Characteristics and Dimensions

  • Available in diameters from 8 mm to 400 mm

  • Rectangular cross-section

  • Internal grip holes for easy assembly and disassembly

  • Standardized dimensions ensure secure and uniform fit in bores

Materials and Surface Treatments
Common materials:

Surface treatments:

  • Phosphating

  • Zinc plating

Application Areas

  • Mechanical engineering: Securing bearings, gears, and other parts in bores

  • Automotive industry: Fixing components in engines, gearboxes, and chassis systems

  • Electrical engineering: Retaining rotating parts in electrical devices

  • Household appliances: Securing components in various devices

Installation and Use
Choosing the right size and material ensures durability and performance. Grip holes allow use of circlip pliers for safe and easy installation and removal.

Conclusion
DIN 472 retaining rings are key fastening components in many mechanical systems. Their standardized design ensures secure axial retention and compatibility across various technical applications.

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