Yaw Turntable Shoulder Yoke
This is the Ø84 x 5 mm yaw turntable for the 'SG90 Four-Axis Desktop Robot Arm' kit. It screws to the yaw servo's double-arm SG90 horn through a 1.8 mm underside pocket with a Ø5.3 centre hole. It also has an upright 5 mm wall with a 28 x 12.6 mm SG90 window and M2 ear slots, which puts the shoulder axis 38 mm above the underside. Two gussets brace the wall, and two Ø9 bosses carry Ø4.0 x 6 mm M3 heat-set bores at (22, ±14) for the 625-bearing idler cheek.
robotics kit sg90 robot-arm