Industrial Retaining Rings & Circlips (DIN 471 / DIN 472)
Retaining Rings, also commonly known as circlips or snap rings, are high-precision fasteners used to hold mechanical components (such as bearings or gears) onto a shaft or inside a bore. By fitting into a pre-machined groove, they provide a strong shoulder to prevent axial movement of parts while allowing rotation.
Our retaining rings are manufactured from high-quality spring steel or stainless steel, ensuring excellent tension and recovery properties. They are indispensable in automotive, aerospace, and general mechanical engineering.
Internal vs. External Retaining Rings
Understanding the difference is key to proper assembly performance:
- External Retaining Rings (DIN 471): Installed on shafts. They exert inward pressure to grip the groove tightly.
- Internal Retaining Rings (DIN 472): Installed inside housings or bores. They exert outward pressure to stay secured in the internal groove.
- E-Clips (DIN 6799): Radially installed rings that do not require specialized pliers, ideal for smaller shaft assemblies.
Standard Technical Data
| Type | Standard | Shaft/Bore Dia. | Key Material |
|---|---|---|---|
| External | DIN 471 | 3mm – 300mm | 65Mn / SS304 |
| Internal | DIN 472 | 8mm – 400mm | 65Mn / SS316 |
| E-Type | DIN 6799 | 1mm – 30mm | Carbon Steel |
Why Choose Our Retaining Rings?
- Consistent Tension: Precise heat treatment ensures the rings maintain their shape even after repeated installation.
- Corrosion Resistance: Multiple coating options including black phosphate for oil retention or stainless steel for wet environments.
- Strict Tolerance: Manufactured to h-grade tolerances to ensure perfect seating in standard grooves.
Frequently Asked Questions (FAQ)
Q1: What is the best material for high-temperature applications?
A: For high-temperature or highly corrosive environments, we recommend Stainless Steel 316 or PH15-7Mo specialized alloys.
Q2: Do you provide circlips in bulk packaging for OEM?
A: Yes, we offer industrial bulk packaging and customized labeling for high-volume production lines.
Q3: How do I choose between a snap ring and a spiral retaining ring?
A: Snap rings (circlips) are better for high-impact loads, while spiral rings offer 360-degree contact without ears, ideal for clearance issues.
