| Place of Origin: | CHINA |
|---|---|
| Brand Name: | YIZGEAR |
| Minimum Order Quantity: | 200 Sets |
| Price: | 300＄ |
| Packaging Details: | Plywood Crate |
| Delivery Time: | 60 Days |
| Payment Terms: | L/C, T/T |
| Supply Ability: | 500 Sets/Month |
| Forging Steel: | 17CrNiMo6 | Pressure Angle: | 20° |
|---|---|---|---|
| Accuracy: | ISO 6-7 Grade | Gear Type: | Cylindrical Gear |
| Color: | Standard | Processing: | Forging |
| Highlight: | Smooth Single Helical Gear,High Efficiency Single Helical Gear,Quiet Operation Single Helical Gear |
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1)Descriptions of Helical Gear
A helical gear is a cylindrical gear whose tooth line forms a certain angle (screw angle) with the gear axis.
Its tooth profile is distributed in a spiral manner.
2)Features of Helical Gear
a)The tooth line is not parallel to the axis line; instead, it extends in a spiral manner.
b)During meshing, the contact line is inclined and gradually enters and exits the meshing position.
c)Can be designed to be in either left-handed or right-handed orientation.
3)Advantages of Helical Gear
a)Transmission is more smooth: Progressive meshing reduces shock and vibration.
b)More quiet operation: The noise is reduced by approximately 10-15 decibels compared to spur gears.
c)Higher carrying capacity: The number of meshing teeth is greater than that of straight gears.
| Products | Helical Gears |
| Custom Made | √ |
| Gear Profile Type | Cylindrical Gear |
| Manufacturing | Gear hobbing |
| Teeth Grinding | √ |
| Module (M) | 9 |
| Number of Teeth (Z) | 12 |
| Pressure Angle (α) | 20° |
| Lead Angle | 20° |
| Accuracy Grade | ISO 6-7 Grade |
| Heat Treatment | Carburizing |
| Surface Hardness | 58-62HRC |
| 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 | |