Planetary gears kit with 6000-2rs

I was needed 5:1 reduction— this quick design gave me that. Used 10x26x8 ball bearings to reduce friction. It is possible to stack stages to increase reduction.

I had 7mm hex shaft so design uses that to connect input and output. I included 7x11 connector to be used to connect stages — scale it if needed

The 4mm bolts/nuts/washers will be needed for assembly.

See also onshape design