1) Description of Herringbone Gear
The herringbone gear is a special type of gear that combines two
helical gears with equal helical angles
and opposite rotation directions into one. Its tooth profile is in
the shape of a "person" character.
It transmits power through interlaced helical teeth and eliminates
axial forces.
2) Feature of Herringbone Gear
It has the characteristic of continuous meshing, resulting in a
high degree of overlap during transmission;
the symmetrical helical teeth on both sides cancel out the axial
forces, ensuring strong operational stability;
and during the transmission process, there is little vibration and
noise.
3) Advantage of Herringbone Gear
Compared with straight gears, the herringbone gear transmission is
more stable and has a higher load-bearing capacity;
compared with ordinary helical gears, it can effectively solve the
problem of axial force and extend the service life of the
equipment;
the transmission efficiency is high, reaching over 98%.
4) Application of Herringbone Gear
It is commonly used in high-power and high-speed transmission
systems, such as the propulsion systems of ships,
the transmission devices of large industrial steam turbines, as
well as large mechanical equipment in the mining
and metallurgical industries, to ensure the efficient and stable
transmission of power.
Technical Specifications
| Parameter | Specification |
|---|
| Custom Made | Available |
| Gear Profile Type | Cylindrical Gear |
| Manufacturing Process | Gear Milling |
| Teeth Grinding | Included |
| Module (M) | 12 |
| Number of Teeth (Z) | Custom |
| Pressure Angle (α) | 20° |
| Lead Angle | Custom |
| 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 | |
Production Equipment
Production Process
