Technical Specifications
| Parameter | Specification |
|---|---|
| Standard | DIN 6799 |
| Nominal Shaft Diameter (d₁) | 1–42 mm |
| Material | Spring Steel |
| Material Grade | C67S / C75S, EN 10132-4 |
| Hardness | 460–580 HV |
| Ring Thickness (s) | According to shaft diameter and DIN 6799 |
| Groove Diameter (d₂) | According to DIN 6799 |
| Groove Width (m) | According to DIN 6799 |
| Installation | Radial Installation on Shaft |
| Application | Axial Retention of Shaft-Mounted Components |
E Type Retaining Ring Design & Contact Points
The E-shaped profile is designed for radial installation into a shaft groove and provides several contact areas around the groove after installation.
- Open Profile
The open-sided geometry allows the ring to be positioned from the side of the shaft, making it suitable for assemblies where axial access is limited.
- Contact Points
The inner projections engage with the shaft groove at defined locations, helping distribute the retaining action around the groove rather than relying on a single contact area.
- Axial Positioning
Once properly seated, the ring forms a compact shoulder for components mounted on the shaft, limiting their axial movement.
- Groove Compatibility
The shaft groove dimensions should be matched to the selected DIN 6799 size to ensure the ring seats correctly without excessive clearance or deformation.
Anhui Pins manufactures DIN 6799 retaining rings for compact shaft assemblies, with production focused on consistent geometry and controlled mechanical properties.
- Profile Forming
Production processes form the E-shaped profile and contact features to maintain the specified ring geometry across production batches.
- Heat Treatment
Heat-treatment conditions are controlled to achieve the required spring characteristics and hardness of the finished rings.
- Dimensional Verification
Critical dimensions such as shaft diameter range, ring thickness, groove-related dimensions, and profile geometry are checked against the applicable specification.
Specification-Based Production
Anhui Pins can manufacture according to customer drawings or defined technical requirements, including material grade, dimensions, surface condition, and packaging.
E Type Retaining Ring Material & Spring Properties
The mechanical behavior of the ring depends on its spring-steel composition, thickness, heat-treatment condition, and dimensional geometry.
- Spring Steel
C67S and C75S spring steel grades according to EN 10132-4 provide the elastic characteristics required for radial installation and retention.
- Hardness
The specified hardness range of 460–580 HV provides the material condition required for maintaining the ring profile during installation and service.
- Elastic Recovery
The ring is designed to undergo controlled deformation during installation and recover toward its original shape after entering the shaft groove.
- Material Selection
Spring-steel selection should be considered together with shaft material, groove geometry, installation conditions, and expected mechanical loading.
FAQ
How do I select the correct size for an E-clip?
Select the size according to the nominal shaft diameter and then verify the corresponding groove dimensions. The shaft and groove should be checked against the selected DIN 6799 size before ordering.
Can an E-clip be used where axial access is limited?
Yes. Its radial installation method allows it to be fitted from the side of the shaft, which can be useful when the end of the shaft is not accessible for conventional installation.
Can these rings be used on small-diameter shafts?
Yes. DIN 6799 covers relatively small shaft diameters, making this retaining method suitable for compact mechanisms and small mechanical assemblies.
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