Henan Yizhi Machinery Co., Ltd
Focus on transmission parts and drive your mechanical system better
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1) Description of Rack Gear and Pinion
A rack and pinion is a type of linear actuator that comprises a pair of gears which convert rotational
motion into linear motion. This combination of Rack gears and Spur gears are generally called “Rack and Pinion”.
Rack and pinion combinations are often used as part of a simple linear actuator, where the rotation of a shaft
powered by hand or by a motor is converted to linear motion.
2) Basic technical Data of Rack Gar and Pinion
a) Module
b) Pressure angle
c) Helix angle (For helical rack gear and helical pinion)
| Products | Rack Gears And Pinions |
| Custom Made | √ |
| Gear Profile Type | Rack Gears |
| Gear Teeth manufacturing | Gear Milling |
| Gear Teeth Grinding | If needed |
| Module (M) | Custom |
| Number of Teeth (Z) | |
| Pressure Angle (α) | 20° |
| Helix Angle (β) | Custom |
| Teeth Accuracy Grade | ISO 8-9 Grade |
| Heat Treatment | Induction Hardening |
| Surface Hardness | 200-230HB/ 40-45 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 | |
