Inch radial retaining rings
Select a technical variant and compare the configuration dimensions.
- Reference
- Dedicated geometry
- Application
- Shafts
Representative image of this ring type.
Technical drawing
- d1
- Shaft diameter: application range
- d2
- Groove diameter
- d4
- Outside diameter of the unstressed ring
- a
- Opening of the unstressed ring
- s
- Ring thickness
- m
- Groove width
- n
- Distance from groove edge to shaft end
Type NRA radial ring: three-point ring geometry. Use only the inch-series dimensions in the table; do not substitute metric DIN 6799 dimensions.
Variants and dimensional data
| Size / reference mm | Thickness / wire mm |
|---|---|
| 1.58 | 0.254 |
| 2.39 | 0.381 |
| 3.18 | 0.381 |
| 3.56 | 0.635 |
| 3.96 | 0.635 |
| 4.78 | 0.635 |
| 6.35 | 0.635 |
| 9.53 | 0.889 |
| 11.13 | 0.889 |
| 12.7 | 1.0668 |
| 15.88 | 1.0668 |
| 19.05 | 1.27 |
| 22.23 | 1.27 |
| 25.4 | 1.27 |
Reference nominal dimensions. “-” means undocumented, not zero. Inch dimensions are shown separately.
Ring dimensions · in · 14
| Reference mm | d1 | s |
|---|---|---|
| 1.58 | 0.062 | 0.010 |
| 11.13 | 0.438 | 0.035 |
| 12.7 | 0.500 | 0.042 |
| 15.88 | 0.625 | 0.042 |
| 19.05 | 0.750 | 0.050 |
| 2.39 | 0.094 | 0.015 |
| 22.23 | 0.875 | 0.050 |
| 25.4 | 1.000 | 0.050 |
| 3.18 | 0.125 | 0.015 |
| 3.56 | 0.140 | 0.025 |
| 3.96 | 0.156 | 0.025 |
| 4.78 | 0.188 | 0.025 |
| 6.35 | 0.250 | 0.025 |
| 9.53 | 0.375 | 0.035 |
Groove dimensions · mm · 14
| Reference | d2 | Tolerance + / - | m | m tol. | n min |
|---|---|---|---|---|---|
| 1.58 | 1.3208 | - | - | - / - | - |
| 2.39 | 1.8796 | - | - | - / - | - |
| 3.18 | 2.413 | - | - | - / - | - |
| 3.56 | 2.667 | - | - | - / - | - |
| 3.96 | 2.9464 | - | - | - / - | - |
| 4.78 | 3.7338 | - | - | - / - | - |
| 6.35 | 5.334 | - | - | - / - | - |
| 9.53 | 7.6962 | - | - | - / - | - |
| 11.13 | 8.7122 | - | - | - / - | - |
| 12.7 | 10.0584 | - | - | - / - | - |
| 15.88 | 12.319 | - | - | - / - | - |
| 19.05 | 14.732 | - | - | - / - | - |
| 22.23 | 17.145 | - | - | - / - | - |
| 25.4 | 21.209 | - | - | - / - | - |
Materials and finishes
Selection and application
Installed laterally relative to the shaft axis. For DIN 6799, the ring designation refers to the groove diameter; the compatible shaft diameter is a separate range. Check both before selecting a variant.
Other materials and finishes are available on request. Configuration and supply are confirmed against the specific enquiry.
Size compatibility: materials and finishes
| Size / reference mm | Thickness / wire mm | Material | Finish |
|---|---|---|---|
| 1.58 | 0.254 | Steel | Phosphated or blackened, oiled |
| 2.39 | 0.381 | Steel | Phosphated or blackened, oiled |
| 3.18 | 0.381 | Steel | Phosphated or blackened, oiled |
| 3.56 | 0.635 | Steel | Phosphated or blackened, oiled |
| 3.96 | 0.635 | Steel | Phosphated or blackened, oiled |
| 4.78 | 0.635 | Steel | Phosphated or blackened, oiled |
| 6.35 | 0.635 | Steel | Phosphated or blackened, oiled |
| 9.53 | 0.889 | Steel | Phosphated or blackened, oiled |
| 11.13 | 0.889 | Steel | Phosphated or blackened, oiled |
| 12.7 | 1.0668 | Steel | Phosphated or blackened, oiled |
| 15.88 | 1.0668 | Steel | Phosphated or blackened, oiled |
| 19.05 | 1.27 | Steel | Phosphated or blackened, oiled |
| 22.23 | 1.27 | Steel | Phosphated or blackened, oiled |
| 25.4 | 1.27 | Steel | Phosphated or blackened, oiled |
Find the configuration
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