Patent ID: 6950283

Claim:
In a disc drive having a rotatable disc mounted on a spindle and driven by a spindle motor mounted on a base, a stacked actuator arm assembly rotatably driven to position read/write heads over the disc in the disc drive, said stacked actuator assembly comprising: an actuator arm and a spacer stacked on a sleeve rotatably mounted on the base; a load beam for each actuator arm with a proximal end attached to the actuator arm and a distal end supporting a read/write head; and a flex circuit attached to one side of the actuator arm assembly, the flex circuit providing read/write circuit elements for the read/write heads; a pin positioned on the opposite side of the stacked assembly from the flex circuit and registering with an aligned hole through the actuator arm and the spacer; the pin providing at least in part a counter balancing weight for the flex circuit.