| Material | 42CrMo/AISI 4140 |
| Heat Treatment | Nitriding |
| Hardness | 650 HV |
| Quality Grade | ISO 8-9 Grade |
| Profile Type | Internal Gear |
| Module | 0.5-25 Module |
Forging Steel Internal Spur Gear Teeth Shaping Service - Annulus Gear
Internal gear is typically used for planetary drive systems requiring high reduction ratios.
45# Carbon steel and 42CrMo alloy steel are the most commonly used materials for internal gear production.
Quenching and tempering or Nitriding heat treatment are standard processes for internal gears.
| Products | Internal Gear |
|---|---|
| Custom Made | √ |
| Gear Profile Type | Cylindrical Gear |
| Gear Teeth Manufacturing | Gear Shaping |
| Gear Teeth Grinding | If needed |
| Module (M) | 0.5-25 |
| Number of Teeth (Z) | Custom |
| Pressure Angle (α) | 20° |
| Helix Angle (β) | 0 |
| Teeth Accuracy Grade | ISO 8-9 Grade |
| Heat Treatment | Nitriding |
| Surface Hardness | 650 HV |
| CHINA/GB | ISO | ГΟСТ | ASTM | JIS | DIN |
|---|---|---|---|---|---|
| 45 | C45E4 | 45 | 1045 | S45C | CK45 |
| 40Cr | 41Cr4 | 40X | 5140 | SCr440 | 41Cr4 |
| 20CrMo | 18CrMo4 | 20ХМ | 4118 | SCM22 | 25CrMo4 |
| 42CrMo | 42CrMo4 | 38XM | 4140 | SCM440 | 42CrMo4 |
| 20CrMnTi | 18XГT | SMK22 | |||
| 20Cr2Ni4 | 20X2H4A | ||||
| 20CrNiMo | 20CrNiMo2 | 20XHM | 8720 | SNCM220 | 21NiCrMo2 |
| 40CrNiMoA | 40XH2MA/40XHMA | 4340 | SNCM439 | 40NiCrMo6/36NiCrMo4 | |
| 20CrNi2Mo | 20NiCrMo7 | 20XH2MA | 4320 | SNCM420 |
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