Henan Yizhi Machinery Co., Ltd
Focus on transmission parts and drive your mechanical system better
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3 Module Right Hand Pinion Helical Gear Shaft For Shaft Mounted Gearbox
1) Description of Helical Gear
Helical gear with tooth are cut at an angle to the axis rather than straight and parallel to the axis like the teeth of a spur gear.
The line of contact between two teeth is not parallel to the teeth but inclined.
2) Direction of Helical Gear
a) Left-hand Helical Gear
b) Right-hand Helical Gear
3) Features of Helical Gear
a) With higher strength compared with a equivalent spur gear.
b) Can reduce noise and vibration when compared with a spur gear
| Products | Helical Gear Shaft |
| Custom Made | √ |
| Gear Profile Type | Cylindrical Gear |
| Gear Teeth Manufacturing | Gear Milling/Gear Hobbing/Gear Shaping |
| Gear Teeth Grinding | √ |
| Module (M) | 3 |
| Number of Teeth (Z) | 17 |
| Pressure Angle (α) | 20° |
| Lead Angle | 15° |
| Accuracy Grade | ISO 6-7 Grade |
| Heat Treatment | Carburizing |
| Surface Hardness | 58-62HRC |
| STEEL CODE GRADES COMPARISON | |||||
| 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 | |
