ball bearing - fidget spinner - keychain

thingiverse

ball bearing - fidget spinner - keychain these ball bearings are usable but of course only limited. for another project i had bought steel balls. now i had the opportunity to print a "working" ball bearing. there are 2 sizes. for the small one there is the possibility to use it as a fidget spinner and hang it on the keychain. to hang the small ball bearing on the keychain just print the 2 small holders and screw them on the ball bearing with a screw M3x10 (countersunk head). you can also just print the holders and use them to hang a normal 608 ball bearing on the keychain (for the normal bearing use the holder with the 2 screws). of the big ball bearing i made a normal version and a sealed version. the sealed version is very good for inserting silicone grease and closing the lid. the small bearing has the dimensions like a 608 standard bearing - 8 x 22 x 7 mm. 7x Ø4mm steel balls are used. the larger bearing uses steel balls with Ø6mm - 7 pieces. for the assembly the mounting aid can be used. with it the balls can be positioned within a few seconds (see video). https://youtu.be/C6wajEkCdcI