| Place of Origin: | CHINA |
|---|---|
| Brand Name: | YIZGEAR |
| Model Number: | DB22072202 |
| Minimum Order Quantity: | 1 Piece |
| Price: | $1000/ Piece |
| Packaging Details: | Plywood Crate |
| Delivery Time: | 75 Days |
| Payment Terms: | L/C, D/P, T/T, Western Union |
| Supply Ability: | 100 Pieces/Month |
| Material: | 20CrNiMo | Gear Profile Type: | Double Helical Gear |
|---|---|---|---|
| Heat Treatment: | Quenching & Tempering | Hardness: | 260-300 HB |
| Manufacturing Process: | Gear Milling | Quality Grade: | ISO 8-9 |
| Highlight: | 25T herringbone helical gear Shaft,DP 1.5 Double Helical Gear Shaft,herringbone gear shaft For Mining Equipment |
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42CrMo or 40CrNiMoA steel are widely used for the double helcial gear and gear shaft.
2) Heat treatment of doubel helical gear
Double helcial gear usually only with quenching and tempering heat treatment
3) Features of double helical gear
Double helical gear with both left-hand and rignt-hand helcial gear teeth.
| Products | Double Helical Gear |
| Custom Made | √ |
| Gear Profile Type | Cylindrical Gear |
| Gear Teeth manufacturing | Gear Milling |
| Gear Teeth Grinding | √ |
| Module (M) | 12.117 |
| Number of Teeth (Z) | 25 |
| Pressure Angle (α) | 20° |
| Helix Angle (β) | 15° |
| Teeth Accuracy Grade | ISO 8-9 Grade |
| Heat Treatment | Quenching & Tempering |
| Surface Hardness | 260-300HB |
| 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 | |
