Henan Yizhi Machinery Co., Ltd
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1)Descriptions of Worm Gear Set
The worm gear set is a common power transmission device, consisting of a worm gear (spiral gear) and a turbine (bevel gear). It is usually used in scenarios requiring a large reduction ratio and high torque transmission. Its features include a compact structure, smooth transmission, and the ability to achieve self-locking functionality (preventing reverse drive).
2)Characteristics of Worm Gear Set
a)High reduction ratio: A single-stage transmission can achieve a reduction ratio of 5:1 to 100:1, suitable for low-speed high-torque applications.
b)Self-locking feature: When the helix angle of the worm is small, the turbine cannot drive the worm in reverse, suitable for occasions requiring anti-reversal (such as elevators, winches).
c)Compact design: Compared with gear reduction boxes, the turbine-hub gear set occupies less space and is suitable for mechanical equipment with limited installation space.
3)Applications of Worm Gear Set
a)Industrial machinery: conveyors, mixers, packaging equipment
b)Automotive industry: steering systems, power windows and sunroofs control systems
c)Lifting equipment: winch, crane, lifting platform
| Products | Worm Gears & Worm Shafts |
| Custom Made | √ |
| Gear Profile Type | Worm Gear |
| Manufacturing | Gear Hobbing |
| Teeth Grinding | √ |
| Module (M) | Custom |
| Number of Teeth (Z) | Custom |
| Pressure Angle (α) | Custom |
| Lead Angle | Custom |
| Teeth Accuracy Grade | ISO 6 Grade |
| Heat Treatment | Carburizing |
| Surface Hardness | 58-62 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 | |
