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[China]
Trade Verify
Address: Taihong 19# South SongShan Road, Erqi Distict, Zhengzhou, China.
Contact name:Kevin
Henan Yizhi Machinery Co., Ltd |
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Verified Suppliers
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1) Description of worm shaft and worm gear
Worm shaft is a shank haveing at least one complete thread aournd the pitch surface and is the driver
of a worm wheel.
2) Type of Worm shaft and worm gear
a) Cylindrical Worm Gear Pair
Worm gear pair is the name for a meshed worm and worm wheel. An outstanding feature is that it offers
a very large gear ratio in a single mesh. It also provides quiet and smooth action.
However, transmission efficiency is poor.
b) Enveloping Gear Pair
This worm set uses a special worm shape that partially envelops the
worm gear as viewed in the direction
of the worm gear axis. Its big advantage over the standard worm is much higher load capacity.
However, the worm gear is very complicated to design and produce.
| Products | Worm Gears & Worm Shafts |
| Custom Made | √ |
| Gear Profile Type | Worm Gear |
| Worm Gear manufacturing | Gear Hobbing |
| Worm Shaft Teeth Grinding | √ |
| Module (M) | Custom |
| Number of Teeth (Z) | Custom |
| Pressure Angle (α) | Custom |
| Lead Angle | Custom |
| Worm Shaft 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 | |
