Wire bore rings DIN 7993
Select a technical variant and compare the configuration dimensions.
- Reference
- DIN 7993
- Application
- Bores
Family illustration.
Technical drawing
- d7
- Ring reference diameter
- m
- Groove width
- d2 / 2
- Groove half-diameter
Original dimension-reference diagram, not to scale: the illustrated geometry is indicative. Documented dimensions are listed in the tables; the variant production drawing is confirmed with the quotation.
Variants and dimensional data
| Size / reference mm | Thickness / wire mm |
|---|---|
| 7.0 | 0.8 |
| 8.0 | 0.8 |
| 10.0 | 0.8 |
| 12.0 | 1.0 |
| 14.0 | 1.0 |
| 16.0 | 1.6 |
| 18.0 | 1.6 |
| 20.0 | 2.0 |
| 22.0 | 2.0 |
| 24.0 | 2.0 |
| 25.0 | 2.0 |
| 26.0 | 2.0 |
| 28.0 | 2.0 |
| 30.0 | 2.0 |
| 32.0 | 2.5 |
| 35.0 | 2.5 |
| 38.0 | 2.5 |
| 40.0 | 2.5 |
| 42.0 | 2.5 |
| 45.0 | 2.5 |
| 48.0 | 2.5 |
| 50.0 | 2.5 |
| 55.0 | 3.2 |
| 60.0 | 3.2 |
| 65.0 | 3.2 |
| 70.0 | 3.2 |
| 75.0 | 3.2 |
| 80.0 | 3.2 |
| 85.0 | 3.2 |
| 90.0 | 3.2 |
| 95.0 | 3.2 |
| 100.0 | 3.2 |
| 105.0 | 3.2 |
| 110.0 | 3.2 |
| 115.0 | 3.2 |
| 120.0 | 3.2 |
| 125.0 | 3.2 |
Reference nominal dimensions. “-” means undocumented, not zero. Inch dimensions are shown separately.
Ring dimensions · mm · 37
| Reference mm | d7 | d3 |
|---|---|---|
| 10.0 | 0,8 | 10,900 |
| 100.0 | 3,2 | 104,200 |
| 105.0 | 3,2 | 109,200 |
| 110.0 | 3,2 | 114,200 |
| 115.0 | 3,2 | 119,200 |
| 12.0 | 1,0 | 13,200 |
| 120.0 | 3,2 | 124,200 |
| 125.0 | 3,2 | 129,200 |
| 14.0 | 1,0 | 15,200 |
| 16.0 | 1,6 | 17,800 |
| 18.0 | 1,6 | 19,800 |
| 20.0 | 2,0 | 22,300 |
| 22.0 | 2,0 | 24,300 |
| 24.0 | 2,0 | 26,300 |
| 25.0 | 2,0 | 27,300 |
| 26.0 | 2,0 | 28,300 |
| 28.0 | 2,0 | 30,300 |
| 30.0 | 2,0 | 32,300 |
| 32.0 | 2,5 | 34,900 |
| 35.0 | 2,5 | 37,900 |
| 38.0 | 2,5 | 40,900 |
| 40.0 | 2,5 | 42,900 |
| 42.0 | 2,5 | 45,000 |
| 45.0 | 2,5 | 48,800 |
| 48.0 | 2,5 | 51,000 |
| 50.0 | 2,5 | 53,000 |
| 55.0 | 3,2 | 58,900 |
| 60.0 | 3,2 | 63,900 |
| 65.0 | 3,2 | 68,900 |
| 7.0 | 0,8 | 7,900 |
| 70.0 | 3,2 | 74,000 |
| 75.0 | 3,2 | 79,000 |
| 8.0 | 0,8 | 8,900 |
| 80.0 | 3,2 | 84,000 |
| 85.0 | 3,2 | 89,000 |
| 90.0 | 3,2 | 94,000 |
| 95.0 | 3,2 | 99,000 |
Groove dimensions · mm · 37
| Reference | d2 | Tolerance + / - | m | m tol. | n min |
|---|---|---|---|---|---|
| 7.0 | 7,800 | - | - | - / - | - |
| 8.0 | 8,800 | - | - | - / - | - |
| 10.0 | 10,800 | - | - | - / - | - |
| 12.0 | 13,000 | - | - | - / - | - |
| 14.0 | 15,000 | - | - | - / - | - |
| 16.0 | 17,600 | - | - | - / - | - |
| 18.0 | 19,600 | - | - | - / - | - |
| 20.0 | 22,000 | - | - | - / - | - |
| 22.0 | 24,000 | - | - | - / - | - |
| 24.0 | 26,000 | - | - | - / - | - |
| 25.0 | 27,000 | - | - | - / - | - |
| 26.0 | 28,000 | - | - | - / - | - |
| 28.0 | 30,000 | - | - | - / - | - |
| 30.0 | 32,000 | - | - | - / - | - |
| 32.0 | 34,500 | - | - | - / - | - |
| 35.0 | 37,500 | - | - | - / - | - |
| 38.0 | 40,500 | - | - | - / - | - |
| 40.0 | 42,500 | - | - | - / - | - |
| 42.0 | 44,500 | - | - | - / - | - |
| 45.0 | 47,500 | - | - | - / - | - |
| 48.0 | 50,500 | - | - | - / - | - |
| 50.0 | 52,500 | - | - | - / - | - |
| 55.0 | 58,200 | - | - | - / - | - |
| 60.0 | 63,200 | - | - | - / - | - |
| 65.0 | 68,320 | - | - | - / - | - |
| 70.0 | 73,200 | - | - | - / - | - |
| 75.0 | 78,200 | - | - | - / - | - |
| 80.0 | 83,200 | - | - | - / - | - |
| 85.0 | 88,200 | - | - | - / - | - |
| 90.0 | 93,200 | - | - | - / - | - |
| 95.0 | 98,200 | - | - | - / - | - |
| 100.0 | 103,200 | - | - | - / - | - |
| 105.0 | 108,200 | - | - | - / - | - |
| 110.0 | 113,200 | - | - | - / - | - |
| 115.0 | 118,200 | - | - | - / - | - |
| 120.0 | 123,200 | - | - | - / - | - |
| 125.0 | 128,200 | - | - | - / - | - |
Materials and finishes
Selection and application
The circular wire section differs from flat sheet rings. End geometry, wire diameter and seat geometry must match the specific application, particularly for piston-pin retaining rings.
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 |
|---|---|---|---|
| 7.0 | 0.8 | Steel | Oiled |
| 8.0 | 0.8 | Steel | Oiled |
| 10.0 | 0.8 | Steel | Oiled |
| 12.0 | 1.0 | Steel | Oiled |
| 14.0 | 1.0 | Steel | Oiled |
| 16.0 | 1.6 | Steel | Oiled |
| 18.0 | 1.6 | Steel | Oiled |
| 20.0 | 2.0 | Steel | Oiled |
| 22.0 | 2.0 | Steel | Oiled |
| 24.0 | 2.0 | Steel | Oiled |
| 25.0 | 2.0 | Steel | Oiled |
| 26.0 | 2.0 | Steel | Oiled |
| 28.0 | 2.0 | Steel | Oiled |
| 30.0 | 2.0 | Steel | Oiled |
| 32.0 | 2.5 | Steel | Oiled |
| 35.0 | 2.5 | Steel | Oiled |
| 38.0 | 2.5 | Steel | Oiled |
| 40.0 | 2.5 | Steel | Oiled |
| 42.0 | 2.5 | Steel | Oiled |
| 45.0 | 2.5 | Steel | Oiled |
| 48.0 | 2.5 | Steel | Oiled |
| 50.0 | 2.5 | Steel | Oiled |
| 55.0 | 3.2 | Steel | Oiled |
| 60.0 | 3.2 | Steel | Oiled |
| 65.0 | 3.2 | Steel | Oiled |
| 70.0 | 3.2 | Steel | Oiled |
| 75.0 | 3.2 | Steel | Oiled |
| 80.0 | 3.2 | Steel | Oiled |
| 85.0 | 3.2 | Steel | Oiled |
| 90.0 | 3.2 | Steel | Oiled |
| 95.0 | 3.2 | Steel | Oiled |
| 100.0 | 3.2 | Steel | Oiled |
| 105.0 | 3.2 | Steel | Oiled |
| 110.0 | 3.2 | Steel | Oiled |
| 115.0 | 3.2 | Steel | Oiled |
| 120.0 | 3.2 | Steel | Oiled |
| 125.0 | 3.2 | Steel | Oiled |
Find the configuration
Choose the assembly, shaft or bore and diameter. Add material and dimensions to refine your search.