1)Descriptions of Helical Gear
Helical gears are one of the most commonly used gear types in
industrial transmission,
and are widely applied in various mechanical transmission systems.
2)Features of Helical Gear
a)The manufacturing process is more complicated than that of spur
gears and requires specialized machine tools.
b)It can be designed as either a parallel-axis or an
interlaced-axis transmission.
c)Common materials include alloy steel, cast iron, etc.
3)Advantages of Helical Gear
a)Wide application range: from small instruments to large industrial
equipment.
b)High transmission efficiency: up to over 98%.
c)Installation flexibility: By adjusting the helix angle, the
transmission performance can be optimized.
Products | Helical Gear |
Custom Made | √ |
Gear Profile Type | Cylindrical Gear |
Manufacturing | Gear hobbing |
Teeth Grinding | √ |
Module (M) | 9 |
Number of Teeth (Z) | 56 |
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 | |