Product overview
V-141 direct-drive linear stages are designed for applications which require a high accuracy and precision, a long service life, and ease of use. V-141.xxxX1Z models are equipped with a magnetic counterweight and are designed for vertical operation.
Even though compact, V-141 linear stages offer superior travel accuracy, flatness, and performance compared to bigger stages. With a powerful, non-cogging, direct drive motor, the V-141 linear stage family is ideally suited for use in production environments. The ultra-precision cross roller bearings are intended to be low maintenance for the life of the stage.
Three phase motors for high dynamics and friction-free, maintenance-free operation
The three-phase linear motors driving the V-141 stage family transfer their force directly and friction-free to the motion platform. This eliminates backlash and play that can result from mechanical components like gears and screws in the drivetrain. Ideal for high-velocity, high-acceleration applications, these motors feature a maintenance-free, frictionless design, ensuring longevity in demanding 24/7 operations. The controller's current limit settings allow easy motor disablement, preventing damage to the stage or the application.
Crossed roller bearings for higher load capacity and precision, as well as a longer service life
Crossed roller bearings offer a superior level of smoothness, straightness, and flatness, close to air bearing performance. By replacing the point contact of ball bearings with a line contact, rollers become considerably stiffer, requiring less preload. The resulting reduction in friction enables smoother running and higher accuracy. Crossed roller bearings can also support higher vertical and moment loads. The anti-creep mechanism prevents roller drift, enhancing reliability. Cleanroom grease is applied for low-maintenance operation.
Incremental encoder
V-141 stages are equipped with incremental sin/cos linear encoders that measure positions with utmost accuracy directly at the motion platform, enhancing linearity and ensuring immunity to mechanical play and elastic deformation which can result from indirect measuring methods. A home signal is built in to initiate the stage.
Selection of the right precision linear stage and controller
Selecting the right linear stage is pivotal for optimal performance in high-precision motion applications, such as semiconductor inspection and photonics alignment. Factors such as resolution, guiding accuracy, and repeatability must be carefully considered. These linear stages offer excellent geometric accuracy (flatness, straightness, pitch, and yaw) along with 0.125 µm bi-directional repeatability in a very compact housing. With high dynamic properties, including up to 2 g acceleration and 0.5 m/sec velocity, these compact motorized stages are ideal for 24/7 automation of highly accurate positioning tasks required for micro-assembly, alignment, or mass production of precision devices.
Partnered with PI’s A-8xx series motion controllers, these stages achieve unparalleled motion performance. PI’s EtherCAT-based controllers provide excellent flexibility, facilitating the seamless integration of third-party equipment compatible with EtherCAT. Advanced algorithms in the A-8xx series motion controllers, such as PILOT allow for higher dynamics with reduced motor currents, virtually increasing the motor’s force constant. Choose the compact V-141 for precision, reliability, and efficiency in your motion applications.
Accessories and options
Controllers and cables
A-81x: ACS-based controllers (models with 2 and 4 axes, various configurations) for medium power requirements
A-82x: ACS-based controllers (models with 4, 6, and 8 axes, various configurations) for high power requirements
A-851.VA03: cable set, V-xxx to A-8xx controllers, sin/cos encoder signals, 3 m length
Application fields
Precision micro-assembly. Research. Biotechnology. General automation. Device assembly. Laser micro-processing. Pick and place. Photonics Alignment and Assembly.
| Motion | V-141.040A1Z | V-141.060A1Z | Tolerance |
|---|---|---|---|
| Active axes | Z | Z | |
| Travel range in Z | 40 mm | 60 mm | |
| Acceleration in Z, unloaded | 20 m/s² | 20 m/s² | max. |
| Maximum velocity in Z, unloaded | 500 mm/s | 800 mm/s | |
| Straightness error in X | ± 2 µm | ± 3 µm | max. |
| Straightness error in Y | ± 3 µm | ± 4 µm | max. |
| Angular error around X | ± 150 µrad | ± 175 µrad | max. |
| Angular error around Y | ± 150 µrad | ± 175 µrad | max. |
| Positioning | V-141.040A1Z | V-141.060A1Z | Tolerance |
| Positioning accuracy in Z, calibrated | ± 2 µm | ± 2.5 µm | max. |
| Bidirectional repeatability in Z | 0.125 µm | 0.125 µm | max. |
| Reference switch | Index in the middle of the travel range, 1 V peak-peak | Index in the middle of the travel range, 1 V peak-peak | |
| Integrated sensor | Incremental linear encoder | Incremental linear encoder | |
| Sensor signal | Sin/cos, 1 V peak-peak | Sin/cos, 1 V peak-peak | |
| Sensor resolution | 100 nm | 100 nm | |
| Drive properties | V-141.040A1Z | V-141.060A1Z | Tolerance |
| Drive type | Ironless 3-phase linear motor | Ironless 3-phase linear motor | |
| Operating voltage | 48 to 80 V | 48 to 80 V | |
| Nominal current, RMS | 1.8 A | 1.8 A | typ. |
| Peak current, RMS | 5 A | 5 A | typ. |
| Drive force in Z | 8 N | 8 N | typ. |
| Peak force in Z | 22 N | 22 N | |
| Force constant | 4.5 N/A | 4.5 N/A | |
| Resistance phase-phase | 4 Ω | 4 Ω | typ. |
| Inductance phase-phase | 0.6 mH | 0.6 mH | |
| Back EMF phase-phase | 4.5 V·s/m | 4.5 V·s/m | max. |
| Magnet pitch | 19.05 mm | 19.05 mm | |
| Mechanical properties | V-141.040A1Z | V-141.060A1Z | Tolerance |
| Maximum load capacity, vertical orientation | 1.75 kg | 1.75 kg | |
| Moved mass in Z, unloaded | 320 g | 450 g | |
| Bearing type | Crossed roller bearings | Crossed roller bearings | |
| Overall mass | 600 g | 800 g | |
| Material | Aluminum | Aluminum | |
| Motion platform dimensions | 80 × 80 mm | 110 × 80 mm | |
| Height | 25 mm | 25 mm | |
| Miscellaneous | V-141.040A1Z | V-141.060A1Z | Tolerance |
| Operating temperature range | 5 to 50 °C | 5 to 50 °C | |
| Connector | D-sub 15 (m) | D-sub 15 (m) | |
| Recommended controllers/drivers | A-81x, A-82x | A-81x, A-82x |
Note on straightness and angular errors: Dependent on the quality of the mounting surface, the payload, orientation, and external forces that act on the stage. Please contact PI for application-specific parameters. The specified values are static (no rotary motion during measuring) and without load.
Note on velocity, acceleration, and permitted payload: Can be limited by imbalance of the payload or the controller and the drive.
At PI, technical data is specified at 22 ±3 °C. Unless otherwise stated, the values are for unloaded conditions. Some properties are interdependent. The designation "typ." indicates a statistical average for a property; it does not indicate a guaranteed value for every product supplied. During the final inspection of a product, only selected properties are analyzed, not all. Please note that some product characteristics may deteriorate with increasing operating time.
V-141 Mini Series Direct Drive Linear Stage
V-141.xxxX1Z 3D Model
Ask for a free quote on quantities required, prices, and lead times or describe your desired modification.
Compact high-precision direct drive linear stage for vertical mounting; ironless 3-phase linear motor; 40 mm travel range; 1.75 kg load capacity; 500 mm/s maximum velocity; incremental linear encoder, 100 nm sensor resolution, sin/cos, 1 V peak-peak; magnetic counterbalance
Compact high-precision direct drive linear stage for vertical mounting; ironless 3-phase linear motor; 60 mm travel range; 1.75 kg load capacity; 500 mm/s maximum velocity; incremental linear encoder, 100 nm sensor resolution, sin/cos, 1 V peak-peak; magnetic counterbalance
