The VP-25AA actuators combine precise positioning with highly reliable performance. It is based on the same innovative design used in the 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 essential to avoid undesirable periodic motion variations caused by variable contact made between the actuator tip and the mating surface.
The top rail of the VP-25AA can also be used as a single-rail linear stage to position optical fibers, micro-optics, sensors, or other small and lightweight parts. For added versatility, a mounting interface for a dovetail rail compatible with the popular ULTRAlign™ positioning system is provided. This system offers a wide selection of interchangeable mounts for optical fibers, fiber arrays, objectives, or GRIN lenses see ULTRAlign™ Fiber Alignment Accessories.
Design Details
| Base Material |
Aluminum |
| Bearings |
Recirculating ball bearings |
| Drive Mechanism |
Backlash-free ball screw |
| Drive Screw Pitch (mm) |
1 |
| Feedback |
Linear steel scale, 20 µm signal period, 0.1 µm resolution |
| Limit Switches |
Optical |
| Origin |
Optical, at center of travel, including mechanical zero signal |
| Motor |
DC Servo, UE25CC |
| Cable Length (m) |
1.5 |
Specifications
| Travel (mm) |
25 |
| Minimum Incremental Motion (µm) |
0.1 |
| Uni-directional Repeatability, Guaranteed(1),(2) (µm) |
0.1 |
| Bi-directional Repeatability(1),(2) (µm) |
0.6 or ± 0.3 |
| On-Axis Accuracy, Guaranteed(1),(2) (µm) |
2 or ± 1 |
| Maximum Speed (mm/s) |
25 |
| Axial Load Capacity (+Cx) (N) |
40 |
| MTBF (h) |
20,000 |
| Weight [lb (kg)] |
2.2 (1.0) |
1) Shown are peak to peak, guaranteed specifications or ± half the value as sometimes shown. For the definition of typical specifications which are about 2X better than the guaranteed values see
Motion Control Metrology Primer.
2) Measured on a linear stage attached to the actuator
For the definition of specifications see
Motion Basics and StandardsXPS Series
|
Model |
Description |
| XPS-Q2
|
2-axis Universal Controller/Driver, ethernet |
| XPS-Q4
|
4-axis Universal Controller/Driver, ethernet |
| XPS-Q6
|
6-axis Universal Controller/Driver, ethernet |
| XPS-Q8
|
8-axis Universal Controller/Driver, ethernet |
| XPS-DRV03
|
High performance PWM drive module for DC motors, 5A/48V max. |
Note: XPS controller requires XPS-DRV03 for each axis with VP-25AA
ESP301 Series
|
Model |
Description |
| ESP301-1G
|
ESP301 Motor Controller/Driver, 1 axis, w/ GPIB and USB |
| ESP301-1N
|
ESP301 Motor Controller/Driver, 1 axis, USB |
| ESP301-2G
|
ESP301 Motor Controller/Driver, 2 axis, w/ GPIB and USB |
| ESP301-2N
|
ESP301 Motor Controller/Driver, 2 axis, USB |
| ESP301-3G
|
ESP301 Motor Controller/Driver, 3 axis, w/ GPIB and USB |
| ESP301-3N
|
ESP301 Motor Controller/Driver, 3 axis, USB |
SMC Series
|
Model |
Description |
| SMC100CC
|
Single-axis DC motor controller/driver |
Note: Refer to SMC series product page for power supply and available cable accessories
