DIN 471
DIN 471 is a standard from the German Institute for Standardization (DIN) for shaft retaining rings (circlips). This standard specifies the dimensions, tolerances, and mechanical properties of retaining rings designed to be installed in a groove on a shaft to prevent axial movement of components. DIN 471 retaining rings come in various sizes and materials to suit different needs.
Characteristics and Dimensions
Available in diameters from 3 mm to 400 mm
Snap into a shaft groove to secure axial retention
Rectangular cross-section with external grip holes for easy installation and removal
Materials and Surface Treatments
Common materials:
Spring steel
Surface treatments include:
Phosphating
Zinc plating
Applications
Mechanical engineering: Securing gears, bearings, and parts on shafts
Automotive industry: Retaining components in engines, transmissions, and drivetrains
Electrical engineering: Fixing rotating parts in electrical devices
Household appliances: Securing components in various appliances
Installation and Use
Choose the correct size and material for durability and performance. Grip holes allow use of circlip pliers for safe and easy installation/removal.
Conclusion
DIN 471 retaining rings are essential fasteners in many mechanical applications. Their standardized sizes and materials ensure reliable and safe axial retention across varied use cases.