| Module: | 0.8 – 9 |
| tooth process: | hobbing,shaving, and tooth grinding if required |
| heat treatment: | isothermal normalizing, carburizing |
| surface hardness: | 56-62 HRC |
| case depth: | 0.5 – 1.2mm |
| accuracy: | 6 – 8 |
| material: | 8620H, 20CrMnTi or other alloy steel your required |
| inner hole ellipticity: | up to 0.005mm |