Two-Stage Gearbox for Industrial 10:1 Ratio: Advantages

[cabellos6]

For an industrial parallel axis gearbox with a transmission ratio 10:1, what is the reasoning behind the use of 2 stages rather than a single stage?

The one I can think of is the reduction in size of the gears using 2-stage as opposed to a single stage, thus reducing costs.

Are there any others?

 

[mgb_phys]

Also think about the load on a tooth if it is driving a ratio of 10:1 compared to 2:1

 

[Danger]

I'm not sure about this, but I suspect that it would also ease heat build-up in the lubricant. That would be a result of the tooth-load that Mgb mentioned, in that the friction heat would be spread over a larger volume of oil.

 

[pantaz]

Relative direction of shaft rotation. (Input versus output.)