bike chain drive for Wantai 57BYGH115-003B
This is an assembly with which you can link a Wantai 57BYGH115-003B stepper motor to a 16mm diameter threaded rod, using standard mountain bike chain. Just fasten a sprocket on the rod between two nuts, put the other sprocket on the motor shaft and fasten it with some small screws through the 4 holes on the side, mount the motor on the bridge and you're good to go.