Product Details

The fundamental working principle of the DIN 472 ring is that its free-state outer diameter is slightly larger than the bore’s groove diameter. This ensures a tight, secure fit once installed. The ring features two lugs with holes, specifically designed for use with internal circlip pliers. During installation, the pliers are used to compress the ring, reducing its diameter so it can be easily inserted into the bore. Once it aligns with the machined groove, the pliers are released, and the ring springs outward, seating itself securely with a positive and audible “snap.” We manufacture these rings from high-grade carbon spring steel (such as 65Mn) for excellent elasticity and strength, or from stainless steel (Grades A2/304 and A4/316) for superior performance in corrosive or sanitary environments. To further enhance durability, finishes such as zinc plating or a black oxide coating are available.

Product Parameters

The following table outlines the general specifications for our DIN 472 Retaining Rings.

General Specifications:

Note: Detailed dimensional specifications for each size, including required groove dimensions, ring thickness, and lug details, are available upon request. Please contact us with your specific bore diameter requirements for a complete data sheet.

Product Features

Our DIN 472 Retaining Rings are engineered for reliability and ease of use, offering several key advantages:

• Secure Internal Axial Retention: Creates a strong, reliable shoulder inside a bore to accurately locate and secure components against axial forces, ensuring parts remain in their designated position.
• High-Elasticity Spring Steel: Manufactured from heat-treated spring steel, our rings possess the necessary hardness and elasticity to be compressed for installation and spring back to their original shape, providing a consistent and lasting retaining force.
• Designed for Easy Installation & Removal: The integrated lugs are perfectly sized for standard internal circlip pliers, allowing for quick, simple, and non-destructive installation and servicing.
• Space and Cost-Efficient Design: By requiring only a simple internal groove, these rings eliminate the need for more complex and expensive manufacturing processes, saving both space within the assembly and overall production cost.
• Corrosion-Resistant Options: With available options like zinc plating and A2/A4 grade stainless steel, our rings can be specified for use in demanding environments where resistance to moisture and chemicals is critical.

Product Applications

DIN 472 retaining rings are indispensable in any assembly where components need to be located or retained within a housing or bore. Their primary applications include:

• Machinery & Gearboxes: Securing bearings in their housings and preventing axial movement of shafts and gears within a casing.
• Hydraulic & Pneumatic Systems: Retaining seals, pistons, and guide bushings within cylinders, ensuring a proper seal and preventing component drift.
• Automotive Engineering: Widely used in transmissions, wheel hub assemblies, and engine components to hold internal parts securely in place.
• Electric Motors: Essential for positioning bearings and other rotating components accurately within the motor housing.
• General Industrial Equipment: Used in pumps, valves, and various mechanical devices to provide a simple and effective method of internal component retention.