Henan Yizhi Machinery Co., Ltd
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Four Segments Assembled Large Ring Gear Wheel For Mining Industry
Material: Casting Steel ZG42CrMo
Pressure angle: 20°
Quality grade: ISO 8-9 Grade
Manufacturing Method: Gear Hobbing
Structure: Four Segments Assembly
The production time is 100 Days
Description of Girth Gear
Girth gears from are always divided into several identical segments.
This means the component parts are short and easy to handle.
The Segmented girth gears are easier to ararnge delivery.
| Products | Girth Gears |
| Custom Made | √ |
| Gear Profile Type | Cylindrical Gears |
| Manufacturing | Gear Milling/Gear Hobbing |
| Teeth Grinding | |
| Module (M) | 25 |
| Number of Teeth (Z) | 132 |
| Pressure Angle (α) | 20° |
| Lead Angle | |
| Teeth Accuracy Grade | ISO 8-9 Grade |
| Heat Treatment | Quenching & Tempering |
| Surface Hardness | 230-260 HB |
| 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 | |
