| Item | Details |
|---|---|
| Diameter | 70mm, with strict dimensional tolerance control within ±0.03mm to ensure consistency in assembly and reliable performance under ultra-heavy loads. |
| Material Hardness | Carbon steel material with a hardness range of HB 180 - 220, providing superior strength to bear extreme weights and resist deformation even under intense pressure. |
| Surface Roughness | Ra≤1.6μm, achieved through precision polishing, ensuring a smooth surface that minimizes friction in rotational applications and enhances long-term wear resistance. |