doubt about application, size, calculations and materials mechanical reducer

[salvia]

Yes, in your case for example, the pair of gears and the relative shaft output could constitute the final stage of other gears to 2, 3, 4.. stages both to parallel axes and to orthogonal axes, as you can see in the attached image (pair gears highlighted in yellow).
to the below link you can see the explosive components of a 2-stage modular axle reducer, in your case you only care about the final stage.
View attachment 62505

thank you very much useful to understand all the components and how they have to mount! I apologize if I still shake: from the other discussions I read that it would be better to think of a case divided in two along a line that cuts half the housing of the bearings, here instead is not followed this road, what is the most appropriate solution? what depends on the choice?

 

[PIETRO2002]

thank you very much useful to understand all the components and how they have to mount! I apologize if I still shake: from the other discussions I read that it would be better to think of a case divided in two along a line that cuts half the housing of the bearings, here instead is not followed this road, what is the most appropriate solution? what depends on the choice?

When you need to mount some toothed wheel + tree that weighs a few quintals, the only way is to have the carter split in half! the components from above are threaded with the help of bumpers or wagons, it turns all empty and at low speeds to see if everything is ok and then it covers with the upper half-husband and screws it. I extremized things a little... :

 

[salvia]

When you need to mount some toothed wheel + tree that weighs a few quintals, the only way is to have the carter split in half! the components from above are threaded with the help of bumpers or wagons, it turns all empty and at low speeds to see if everything is ok and then it covers with the upper half-husband and screws it. I extremized things a little... :

I understand, thank you so much!?

 

[TETRASTORE]

I read that it would be better to think of a case divided in two along a line that cuts in half the housing of the bearings, here instead is not followed this road, what is the most appropriate solution? what depends on the choice?

in the image below I have reported the three most common morphological variants of parallel axes (and orthogonal).

a - it's the most dated shape, two overlapping spindles and bolted, worked together to ensure the alignment of the bearings and again opened to mount the components.
assembly of the components simplified even without the help of particular equipment.
today mainly used for large-sized gearboxes.

b - unused, even in this case two semicasses but divided longitudinally, processing process similar to the previous but mounting of the most difficult components.
These gearboxes require fixing planes (on the controlled machine) with a high degree of flatness in order to avoid friction of the two saws.

c - in recent decades, according to the new methods of processing and equipment for mounting more and more sophisticated, it has begun to use the monoblocks that, unlike the previous solutions, allow to be worked on the working centers without having to resume them several times with a sensitive saving of time and costs. These processes ensure a perfect alignment of bearings for which you have a positive relapse even in the calculation of the length of gears.
bringing the reinforcement ribs back inside, you have the opportunity to improve the aesthetics of these gearboxes, facilitating also the external cleaning.
the assembly is carried out with adequate equipment in part from the outside and in part inserting the components (e.g. gears) from appropriate openings, closed subsequently by lids.

 

[meccanicamg]

in the case to it is possible to mount all wheels with interference on the trees, something impossible in the conditions b and above all c. this allows to have a transmission more rigid and suitable to the transmission of large powers.
I do all the boxes in electro-welded and use all three configurations. the c is the cheapest one but limits the assembly not recently and especially the maintenance, however it costs little.

 

[salvia]

Thank you very much! I think I have framed the pros and cons of solutions! available.