Split Ball Joint Hemisphere Set
This set holds every ball and spacer for the 'SG90 Mini Delta Pick-and-Place Robot' kit on one 87 × 87 mm sprue tree: 24 hemispheres, each 12 mm dia × 6 mm tall with a 3.4 mm M3 bore, and 12 spacers, 7 × 5.25 mm. Six hemispheres have a 6.2 mm counterbore for an M3x40 SHCS head and six have a 5.7 mm hex pocket for the M3 nut. Snap them off the sprue and they make the six ball pairs that seat in the 12.4 mm cups of the link rods.
robotics kit ball-joint delta-robot