Material: | DIN 18CrNiMo7 | Helix Angle: | 31° |
---|---|---|---|
Hardness: | 58-62 HRC | Normal Module: | 4 |
Transverse Module: | 4.6667 | Face Width: | 50 |
Highlight: | 4 Module 77T Double Helical Gears,DIN 18CrNiMo7 Double Helical Gears,4 Module 77T Double Helix Gear |
DIN 18CrNiMo7 Steel 4 Module 77T Double Helical Gears For Gearbox
1) Description of Double Helix Gears
A double helical gear consists of two helix angles with opposite hands. Inside the gears, the axial thrusts oppose each other
and the resulting forces are not transmitted to the bearings on the shaft. This gearpair setup means they can handle high loads
and allow for a solid transmission while running.
2) Features of Double Helix Gears
Double helical gears have all of the advantages of helical gears, which are strong and quiet, plus have the advantage of being able to
cancel the thrust forces by combining helical gears with both right and left hand twists.
Products | Double Helical Gear |
Custom Made | √ |
Gear Profile Type | Cylindrical Gear |
Gear Teeth manufacturing | Gear Milling |
Gear Teeth Grinding | √ |
Module (M) | Custom Made |
Number of Teeth (Z) | 53 |
Pressure Angle (α) | 20° |
Helix Angle (β) | 31° |
Teeth Accuracy Grade | ISO 7 Grade |
Heat Treatment | Carburizing |
Surface Hardness | 260-300HB |
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 |
Cutting Milling
Heat Treatment Grinding Inspection