Henan Yizhi Machinery Co., Ltd
Focus on transmission parts and drive your mechanical system better
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1) Description of ratchet Gear
Ratchet gear is mechanical device that allows continuous linerar or rotary motion in only one direction
while preventing motion in the opposite direction.
2) Applications of ratchet gear
Machine tools, socket wrenches.
| Products | Ratchet Gear/Ratchet Wheel |
| Custom Made | √ |
| Material | Ratchet Gear |
| Manufacturing | Gear Hobbing/ Gear Shaping |
| Teeth Grinding | √ |
| Module (M) | 16 |
| Number of Teeth (Z) | 84T |
| Pressure Angle (α) | 20° |
| Helix Angle (β) | 8° |
| Accuracy Grade | ISO 8-9 Grade |
| Heat Treatment | Induction Hardening |
| Surface Hardness | 50-55 HRC |
| 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 | |
