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  1. Products
  2. FAQ
  3. Safety Rings for Shafts

Safety Rings for Bores according to DIN 9925-A

Safety rings for bores (Type A) are used in cylindrical openings to securely hold other components in place. They are typically installed using retaining ring pliers, which elastically deform the ring to fit it into the corresponding groove inside the bore. Common areas of application include:

  •  Bearing mounts

  • Hydraulic and pneumatic systems

  • Mechanical and automotive engineering

Advantages of Safety Rings for Bores:

  • High holding force due to precise groove fit
  • Easy installation and removal
  • Resistant to high loads
  •  

Safety Rings for Shafts according to DIN 9925-B

Safety rings for shafts (Type B) are mounted onto rotating or stationary shafts to prevent axial movement. Installation is also carried out using retaining ring pliers to elastically expand the ring and place it into the designated groove on the shaft. Typical applications include:

  • Gear systems

  • Koupling systems

  • Drive shafts

Advantages of Safety Rings for Shafts:

  • Secure hold even under dynamic loads

  • Fast and easy installation

  • High resistance to shear forces

Materials and Surface Treatments

Safety rings according to DIN 9925 are available in various materials, including spring steel, stainless steel, and specially alloyed steels for increased corrosion resistance. To enhance durability and resistance, they are often surface-treated—such as through phosphating, black oxide coating (bluing), or galvanization.

Conclusion

Safety rings according to DIN 9925 offer reliable securing for mechanical components in both bores and on shafts. Thanks to their ease of use, high load capacity, and wide range of applications, they are a proven solution in many industrial environments.
When selecting the appropriate retaining ring, the specific requirements of the application, as well as the material and surface finish, should be taken into account.

At Febrotec, you can find high-quality retaining rings according to DIN 9925 in a variety of designs. Contact us for more information or individual consultation!