1) Description of Spur Gear
From the perspective of general-purpose basic transmission, spur gears are cylindrical gears with teeth parallel to the gear shaft axis. They represent the simplest and most widely applied fundamental type in gear transmission, primarily serving to transmit power and convert rotational speeds between parallel shafts.
2) Characteristics of Spur Gear
Characterised by a simple structure (featuring a zero helix angle design), mature manufacturing processes (capable of being produced via conventional methods such as gear hobbing and gear shaping), and low cost; its advantages include stable transmission ratios (where the contact line of the tooth surfaces remains parallel to the axis during meshing, facilitating consistent transmission accuracy), straightforward installation (eliminating the need to consider helical direction compatibility), strong adaptability (compatible with diverse power sources and actuators), and low maintenance and replacement costs.
5) Application
Suitable for general applications where transmission complexity and space requirements are not stringent, such as: - Connecting small motors to fans - Gear mechanisms in hand tools (e.g., spanners, winches) - Drive systems in household appliances (e.g., washing machines, juicers) - Auxiliary transmission components in agricultural machinery (e.g., seed drills, small harvesters) - Gear demonstration models in educational experimental apparatus.
Technical Specifications
| Parameter | Specification |
| Custom Made | Available |
| Gear Profile Type | Cylindrical Gear |
| Manufacturing Process | Gear Grinding |
| Teeth Grinding | Included |
| Module (M) | Custom |
| Number of Teeth (Z) | Custom |
| Pressure Angle (α) | Custom |
| Lead Angle | 0° |
| 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 | |
Manufacturing Process
Product Tags:
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Custom Precision Transmission Spur Gears Suitable for Various Agricultural Machinery Images
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