DIN 18CrNiMo7 Steel 4 Module 77T Double Helical Gears For Gearbox
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.
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.
Parameter | Specification |
---|---|
Custom Made | Available |
Gear Profile Type | Cylindrical Gear |
Manufacturing Process | Gear Milling & Gear Teeth Hobbing |
Teeth Grinding | Included |
Module (M) | Custom |
Number of Teeth (Z) | 53 |
Pressure Angle (α) | 20° |
Lead Angle | 31° |
Accuracy Grade | ISO 8-9 Grade |
Heat Treatment | Quenching & Tempering |
Surface Hardness | 260-300HB |
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 |
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