1)Descriptions of Internal Gear
Internal spur gears are widely used as transmission components in
devices such as reducers, planetary gearboxes, and slewing
bearings.
2)Features of Internal Gear
a) The processing of internal gears is more difficult than that of
external gears. Special tools are required to avoid interference.
b) Hardness and precision are usually enhanced through processes
such as quenching and gear grinding.
3)Advantages of Internal Gear
a) Multifunctional integration: Capable of simultaneously performing
the functions of transmission and support.
b) Adapt to complex layouts: The internal meshing enables a coaxial
design for power input/output, simplifying the system structure.
Products | Internal Gear |
Custom Made | √ |
Gear Profile Type | Cylindrical Gear |
Gear Teeth manufacturing | Gear Shaping |
Gear Teeth Grinding | If needed |
Module (M) | 0.5-25 |
Number of Teeth (Z) | Custom |
Pressure Angle (α) | 20° |
Helix Angle (β) | 0 |
Teeth Accuracy Grade | ISO 8-9 Grade |
Heat Treatment | Quenching & Tempering |
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 | |