Powerful Robot Gearbox V2

For use in Human size Robot Arms and Legs. Fast and strong.
Printing specs :
Infill : 10%
Number of shells 2
Layer height : 0.30mm
Build plate : 110deg
Speed While extruding : 90mm/sec
Speed while traveling : 150mm/sec

Printing these files with support and print time :
GearboxCasingMain.stl 4hours 3 minutes
MainGear.stl 3 hours 24 minutes

The rest of the files normal without support.and print time :
Gears1.stl 46 minutes
Gears2.stl 24 minutes
GearboxCasingTop.stl 2 hour 2 minutes.

I use this motor on 12v
https://tigerimports.net/sunshop/index.php?l=product_detail&p=9635


"O" and i print only with pla and for support Abs