Gripper Servo Palm
This palm is part 6 of the 'SG90 Four-Axis Desktop Robot Arm' kit. It is a 65 x 52 x 5 mm plate that holds the gripper SG90 servo in a 28 x 12.6 mm window with M2 ear slots, which puts the drive-jaw axis at (-10, 0). The M3 idler-jaw pivot runs in a 3.4 mm slot with 5 mm of travel on a raised 2 mm washer pad, so you can set the 20 mm gear mesh. The palm bolts to the forearm tip with two M3 screws through Ø3.4 holes 15 mm apart.
robotics kit sg90 gripper