generic gearbox / transmission

This is a tiny redesign of my last semesters work at university. It is made to be printed on a 200x200 surface under use of standard parts:
Attention: clearances for merging parts aren't included yet. This will follow in a few weeks when I test it on my printer.

Parts needed:
• 2*fether keys 5x5x18 DIN 6885 FORM A
• 4*ball bearings 16002 SKF 15x32x8
• 2*circlips DIN 471 18x1
• 4*circlips DIN 471 15x1
• 1*valve screw (or a closed casing) DIN 908 10X1
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