search

AngelLM / Thor

DIY 3D Printable Robotic Arm
Creative Commons Attribution Share Alike 4.0 International
953 stars 223 forks source link

5mm (diameter) rods do not fit on 625ZZ bearings and similar issue with motor shaft and pulley #84

Closed emlachapelle closed 3 years ago

emlachapelle commented 3 years ago

In the process of building Thor I've run into the issue that the 5mm (diameter) rods do not fit in the 625ZZ bearings that were on the bill of material... Similarly, the GT2-6 Timing Belt Pulley 20T (inner bore of 5mm) does not fit at all on the shaft of the Stepper Motor 17HS13-0404S-PG5 also provided in the bill of material.

Would it be possible to know what you used instead of these components to ensure a proper fit? Thanks!

AngelLM commented 3 years ago

It should fit as the inner bore has 5mm diameter... I used some spare threaded M5 rods that I had at home in case it helps you. About the Pulley issue, has your motor a 5mm diameter shaft? I don´t know why but there are models named the same with 6mm diameter shaft. In case it is and still doesn´t fit all I can recommend is to file the inner bore of the pulley a bit, or make the hole bigger with a drill