Short crowns are used when working in conditions of high shock loads and heavy soils, for example, when working with rock,
- Particularly strong
- Long service life
| Short crowns CATERPILLAR system J | ||||||
| Catalog number | Designation | L (mm) | B (mm) | H (mm) | K (mm) | Weight (kg) |
| 1U3301 | J300 | 190 | 84 | 97 | 67 | 3,60 |
| 1U3351 | J350 | 213 | 95 | 109 | 75 | 5,80 |
| 9W8451/1U3451 | J460 | 272 | 120 | 133 | 98 | 10,2 |
| 9W8551/1U3551 | J550 | 290 | 142 | 148 | 120 | 15,9 |