Gear processing parameters: What is the gear center distance?

common problem:

What is the gear center distance?

Reply:

Center distance refers to the distance between the shafts of a pair of gears, that is, the distance between the centers of two gears that mesh with each other.

The size of the center distance has an effect on the backlash, that is, the greater the center distance, the greater the backlash.

The engagement angle α varies with the center distance.

The center distance is separable and the rotation ratio remains unchanged, so the transmission ratio has been determined after a pair of gears is processed, and it has nothing to do with the center distance.

The tolerance of the center distance of the spur gear generally takes the ± tolerance of the reference value close to 0.

If you have more questions or related processing needs, you can consult EP Technology for free.