Calculations about Trencher

The purpose of the machine, as the name suggests, is to dig the ground. What to do is Identifying the parts of the project , calculation of parts. Which parts are used and why ?
What we need ?
-Module calculation for gears
-You need to find the input shaft module
-Sizes
-Bearing calculation according to forces (Indication of which bearing is used)
-Torsion calculation
-Bolt cutting force
-Free body diagram for 3 miles
-There is only one turning ratio for the gear mechanism.
-Calculation of bevel gear mechanism
-Bearing responses under tangential force
-Calculation of miles( İmportant)
We will provide the missing information when you are accepted.