Are involute splines gears and what is the difference between them?

There is a difference between involute splines and gears. The following are some reference materials compiled by EP processing for everyone.

1. The difference in transmission:

SplineEquivalent to a coupling, andgearIt is a meshing transmission.

2. The difference in appearance:

The spline looks like a flower from afar, while the gears are generally disc or shaft products.

3. The difference in the modulus series:

There are many gear modulus series, if you are unclear, please click the article published before EP "Gear module selection”查看相关说明，而渐开线花键模数分两个系列15种：0.25、0.5、0.75、1、1.25、1.5、1.75、2、2.5、3、4、5、6、8、10。

4. The difference in pressure angle:

The pressure angle of the involute spline is 30°, 37.5°, 45°, and the gear pressure angle is usually 20°.

5. The difference between the angular spacing requirements between two teeth:

The angle between the two teeth of the spline is required to meet the national standard, and the angular distance between the two teeth of the gear can be set at will according to actual needs.

6. The difference in tooth length requirements:

The spline teeth should be long and the gear teeth short.

7. The difference between the minimum number of teeth:

The spline can be smaller than the minimum number of teeth of the gear (that is, the minimum number of teeth of the spline can be 10), and the gear has the minimum number of teeth. When the pressure angle is 20°, the minimum number of teeth is 14, and when the pressure angle is 25°, the minimum number of teeth is also Only for 12.

The above description is for reference only. For any unclear parts or related processing requirements, you can consult EP Technology for free.