1)Descriptions of Double Helical Gear
Double helical gears are an efficient transmission component that
combines the smoothness of helical gears
with the mechanical advantages of herringbone gears.
They are widely used in the heavy industry sector.
2)Features of Double Helical Gear
a) The transmission process is continuous and smooth, with lower
vibration and noise compared to spur gears,
approaching the performance of herringbone gears.
b) Suitable for high-speed and heavy-load applications, such as
turbine machinery, large reducers and ship propulsion systems.
3)Advantages of Double Helical Gear
a) Smooth and quiet operation: Helical gears reduce impact, making
them particularly suitable for applications that are sensitive to
noise.
b) High reliability and long service life: The symmetrical tooth
design reduces uneven load wear, thereby extending the service life
of gears and bearings.
Products | Double Helical Gear | Custom Made | √ | Gear Profile Type | Cylindrical Gear | Manufacturing | Gear Hobbing | Teeth Grinding | √ | Module (M) | Custom Made | Number of Teeth (Z) | 26 | Pressure Angle (α) | 20° | Lead Angle | 15° | Teeth Accuracy Grade | Custom Made | Heat Treatment | Normalizing | Surface Hardness | 260HB |
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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 |