Heads up: many models on this page are AI-generated or uploaded untested. They may be misconfigured for the intended application — check the dimensions and tolerances, and verify or edit the model before printing or relying on it.*
SG90 Femur Thigh Servo Link
The thigh (femur) link for the 'SG90 18-DOF Hexapod Walker' kit (print 6). It is a flat 81 x 22 x 4 mm link. The pivot end screws to an SG90/MG90S horn using M2x6 self-tappers: there is a 6 mm through-hole, and a 1.5 mm deep recess (a 9 mm circle plus a 6.5 mm slot) keeps the horn from turning. The other end holds the tibia SG90/MG90S servo in a 23.4 x 12.8 mm pocket 50 mm from the pivot. Its slotted M2 tab slots take tab hole spacings from 26 to 31.6 mm.
Upper Arm Elbow Link
This is the shoulder-to-elbow link of the 'SG90 Four-Axis Desktop Robot Arm' kit. It is a 5 mm flat bar, 22 mm wide, 80 mm between axes and 119 mm long overall. The Ø24 × 9 mm shoulder hub has a double-arm SG90 horn pocket on the bottom face (7.5 × 36 × 1.8 mm, Ø5.3 screw hole) and a Ø16.05 × 5 mm press-fit pocket on top for a 625 bearing (5 × 16 × 5), with a 2.2 mm web between them. The elbow end has a 28 × 12.6 mm SG90 window with M2 ear slots, which puts the elbow servo shaft at 80 mm.