• Compact 12 VDC Servo Actuator
• Sub-micron Resolution
• 2.3 mm/sec Maximum Velocity
• Drop In Replacement for Most 12 mm Manual Actuators
• Compatible with Ø:3/8" Barrel-Fitted Stages and Mounts
• Limit Switches for Zero Datum and Actuator Protection
• Rated Down To 10^-6 Torr

The Z812VB Motorized Actuator is engineered for use with optical positioning devices such as mirror mounts and stages. It offers high resolution in a lightweight, compact package, which makes the actuators ideally suited for demanding optical laboratory automation applications. This actuator also features vacuum rated servo motors, phosphorus bronze internal coupling mechanism and mounting bush, and high vacuum grease.

It is rated for use down to 10^-6 Torr and is shipped with a 1.6' (0.5 m) vacuum compatible flat ribbon cable with IDC connector. This cable has a 0.05" (1.27 mm) pitch, 28 AWG stranded conductors and Fluorinated Ethylene Propylene (FEP) insulation. A converter cable for use with the TDC001 controller is also supplied but this is not vacuum compatible and should only be used outside the chamber.

• Vacuum Rating: 10^-6 Torr
• Bidirectional Repeatability: <1.5 µm
• Backlash: <8 µm
• Maximum Acceleration: 4 mm/sec²
• Maximum Velocity: 2.6 mm/sec
• Velocity Stability: ±0.125 mm/sec
• Maximum Vertical Load Capacity: 4.5 kg
• Maximum Horizontal Load Capacity: 9 kg
• Recommended Horizontal Load Capacity: <7.5 kg
• Recommended Vertical Load Capacity: <4.0 kg
• Min Achievable Incremental Movement: 0.05 µm
• Min Repeatable Incremental Movement: 0.2 µm
• Absolute On-Axis Accuracy: 95 µm
• Maximum Percentage Accuracy: 0.75%
• Home Location Accuracy: <2 µm
• Homing Repeatability: ±1.0 µm
• Operating Temperature Range: 41° to 104° F (5° to 40° C)
• Max Motor Coil Temperature: 85 °C
• Limit Switch Life Time: >100,000 Cycles
• Weight: 0.134 kg
• Travel Range: 12.0 mm