How It Works - Retaining Ring Design
+Retaining Ring Calculator
Calculate groove dimensions and thrust capacity for standard retaining rings per DIN 471/472.
mm - nominal diameter
N
Ring Dimensions (auto-populated from standard)
mm
mm
mm
mm
mm - max radius
Ring: 800-1000 MPa, Groove: 300-500 MPa (limiting)
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Adequate Capacity
Thrust load within ring capacity
Retaining Ring Results
Thrust Capacity
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Contact Bearing Stress
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Groove Shear Stress
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Ring Engagement Depth
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Safety Factor
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Select diameter to auto-populate standard ring dimensions.
Groove Specifications
Groove Diameter
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Groove Width
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Corner Radius (max)
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Chamfer for Assembly
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DIN 471 External Ring Data
| d (mm) | s | b | d1 | m |
|---|---|---|---|---|
| 10 | 1.0 | 2.1 | 9.3 | 1.1 |
| 15 | 1.0 | 2.3 | 14.1 | 1.1 |
| 20 | 1.2 | 2.5 | 18.5 | 1.3 |
| 25 | 1.2 | 2.5 | 23.2 | 1.3 |
| 30 | 1.5 | 2.9 | 27.9 | 1.6 |
| 40 | 1.75 | 3.0 | 37.5 | 1.85 |
| 50 | 2.0 | 3.4 | 47.0 | 2.15 |