Textbooks [[metric_gears.pdf]] [[ntn_bearing_loads.pdf]] videos https://www.youtube.com/watch?v=nrsCoQN6V4M&list=PLVBMUkXqu-olm5aY1snFgTsAliVQ_8hI0&index=1 ### Profile Shift https://www.tec-science.com/mechanical-power-transmission/involute-gear/profile-shift/