real ball bearing v4

thingiverse

This is the revamped version of toplar_rulman from Nevit Dilmen.\nThis part is crafted with seven balls and the key factor to adjust is the diameter of the axis.\nAll other features are recalculated.\nIn version 4, I corrected some mistakes in particular in the formula for the radius of the ball.\nI also modified my approach to drawing, starting from a 2D shape to be extruded.\nAnd notably, I added spacers between the ball cages.\nHow I Designed This\nFrom the diameter of the axis and the thickness of the inner ring, I calculate the radius of the ball.\nTo do this, you need to know the constraint of ball bearing mounting with seven balls. Five balls are held in a half circle.\nSo the formula is\nsine(180/10)*(radius of axis + thickness of inner ring)/(1-sine(180/10))\nThe constant values are\nthe thickness of inner ring (and outer ring)\nthe thickness of clips and hook of clips\nthe thickness of ball cage\nthe play\n\n\n \n \n Custom Section\nChange the diameter of the axis and a new ball bearing appears.\nYou can change the constant values too. There is no issue with the thickness of inner ring but the other constant values are constrained by the size of the bearing. (i.e., if you let thickness of clips to 2 for a diameter of axis to 4, it will be an issue).