Servo Mount Shaft Encoder Output Type NPN Open Collector Shaft Type External Shaft Diameter 1/4 in Rotor Inertia 4.8 g/sq cm Maximum Speed 8 000 RPM Cable Length 36 in Overall Diameter 1 1/2 in Overall Width 1.5 in Overall Depth 1.418 in Encoder Style Servo Mount Encoder Type Incremental Mounting Hole Location Center Resolution 2500 Pulses Per Revolution Series ZSD Voltage 4.75 to 28 V DC