Why is the transfer case not geared, but a chain sprocket?

1. ChainSprocketAll are standard parts, which can reduce design and processing costs.

2. If only one gear is used to drive the output shaft, the rotation will be reversed, and there must be an idler in the middle, one more idler and one more set of bearings, the reliability and maintainability will become worse, and the weight will also increase.Chains do not have this problem.