The VP-25AA actuators combine precise positioning with highly reliable performance. It is based on the same innovative design used in our VP-25XA linear stages (see Precision Compact Linear Stages) and features a high-resolution linear scale for exceptional repeatability and accuracy. The scale is fixed on a moving rail, to which the actuator’s tip is permanently attached without any contact to the mounting shaft. This concept eliminates all drivetrain induced motion errors and minimizes hysteresis between the scale and the actuator tip. The non-rotating tip is also essential to avoid undesirable periodic motion variations caused by variable contact made between the actuator tip and the mating surface.

The VP-25AA actuators combine precise positioning with highly reliable performance. It is based on the same innovative design used in our VP-25XA linear stages (see Precision Compact Linear Stages) and features a high-resolution linear scale for exceptional repeatability and accuracy. The scale is fixed on a moving rail, to which the actuator’s tip is permanently attached without any contact to the mounting shaft. This concept eliminates all drivetrain induced motion errors and minimizes hysteresis between the scale and the actuator tip. The non-rotating tip is also essential to avoid undesirable periodic motion variations caused by variable contact made between the actuator tip and the mating surface.