PRO-SV Long-Travel Lift Stages


Design Features

  • Vertical motion with travel lengths up to 50 mm, overall heights as compact as 95 mm, speeds up to 20 mm/s, and payload capacities up to 60 kg
  • High-precision crossed-roller bearings result in excellent straightness and angular performance
  • Precision-ground ball-screw, slotless torque motor, and low-expansion linear encoder contribute to a 10 nm achievable step size
  • High-reliability drive mechanism contributes to the long service life
  • Available with ThermoComp® for consistent performance in changing environments
Aerotech’s PRO-SV series of lift stages provide long-travel, ultra-precise vertical motion in the shortest possible form factor. Three distinct models, each with a variety of configurable features and options, offer a diverse selection of travel range and payload capacity combinations, making the PRO-SV an excellent choice for all applications in which high-performance vertical motion is important.

Long Travel in a Low-Profile Package

Unlike other types of vertical motion stages, PRO-SV features a drive mechanism that impinges directly on the moving carriage. This provides an exceptionally long range of vertical travel and  maintains the shortest height possible, granting free and clear access to the user’s payload. Minimizing the work-point height is especially important in designing motion systems because it minimizes the Abbe offset, thus contributing to greater overall precision.

Precisely Engineered for Superior Performance

A major problem commonly associated with lift stages is subpar geometric performance (i.e., straightness, pitch, roll, and yaw). PRO-SV provides an innovative solution to this problem. Guided by anti-creep and crossed-roller bearings, the moving carriage is thoroughly supported in all directions, making PRO-SV the most precise commercially-available lift stage on the market. Additionally, a slotless, brushless torque motor is joined directly to a large-diameter, precision-ground ball-screw drive mechanism to position even the heaviest payloads with extremely smooth, cog-free motion. The lack of belts, gears, and flex-couplings contributes to PRO-SV’s high reliability and eliminates sources of error from wind-up and excessive backlash.

Features for Design and Integration Flexibility

PRO-SV is engineered for seamless integration into multi-axis stage platforms, motion systems, and machines. It mounts directly to Aerotech’s renowned PRO-SL and PRO-LM linear translation stages and is available with an optional accessory tabletop, to which a variety of Aerotech rotary stages or other process equipment can be integrated. Directly-coupled rotary encoder feedback is standard, and several optional high-resolution linear encoder additions exist for enhanced precision and high bandwidth when operating with dual-loop feedback. When payload management safety is critical, PRO-SV can be configured with an absolute linear encoder, as well as a holding brake, to provide extra levels of protection against inadvertent damage.

Mitigate Thermal Errors with ThermoComp

Temperature changes and thermal effects can be the most detrimental sources of error in precision machines, and screw drives are particularly susceptible. To combat this issue, PRO-SV stages are available with Aerotech’s ThermoComp® feature, an integrated temperature compensation solution that delivers accurate and dependable positioning performance in the presence of thermal disturbances. It protects the stage from the effects of variable-temperature environments and friction-induced self-heating, ultimately providing stability to the user’s process, even in extreme industrial environments.


PRO-SV Specifications

Travel 20 mm 35 mm 50 mm
Accuracy1 Standard ±4 µm ±5 µm ±6 µm
Calibrated ±0.75 µm
Calibrated, with Linear Encoder ±0.5 µm
Resolution (Min. Incremental Motion) With Rotary Encoder2 0.025 µm
With Linear and Rotary Encoder3 0.010 µm
Bidirectional Repeatability1 With Rotary Encoder² ±0.5 µm
With Linear and Rotary Encoder³ ±0.15 µm
Straightness ±3 µm ±4 µm ±5 µm
Pitch 50 µrad (10 arc sec) 70 µrad (14 arc sec)
Roll 50 µrad (10 arc sec) 70 µrad (14 arc sec)
Yaw 25 µrad (5 arc sec) 30 µrad (6 arc sec)
Maximum Speed4 10 mm/s 20 mm/s
Load Capacity5,6 20 kg 40 kg 60 kg
Stage Mass7 5.4 kg 10.2 kg 17.8 kg
Material Anodized aluminum
  1. Certified with -PL1/-PL2 options.
  2. With 1 Vpp amplified sine rotary encoder (-E1 feedback option) and linear amplifier.
  3. With 1 Vpp amplified sine linear encoder (-E3, -E4 feedback options) and linear amplifier.
  4. Requires the selection of an appropriate amplifier with sufficient voltage and current.
  5. Axis orientation for on-axis loading is listed.
  6. A holding brake (-BK option) is recommended when the payload exceeds 75% of the load capacity as a precaution in the event that power to the stage is unexpectedly lost.
  7. Excludes tabletop and brake options.
  8. Specifications are for single-axis systems measured 35 mm above the tabletop. Performance of multi-axis systems depends on payload and workpoint. Consult factory for details.
Electrical SpecificationsPRO165SV-020PRO190SV-035PRO225SV-050
Drive System Brushless Torque Motor
Feedback Rotary

Incremental encoder, 1 Vpp
Digital encoder, RS422
10,052 lines/rev (PRO165SV, PRO190SV) or 14,452 lines/rev (PRO225SV)

Linear Incremental encoder, 1 Vpp with 20 µm scale
Digital encoder, RS422 with 0.25 µm resolution
Absolute encoder, EnDat 2.2 with 0.001 µm resolution
Maximum Bus Voltage 340 VDC
Limit Switches 5 V, normally-closed

Recommended Controller 
Multi-Axis A3200

NDrive CP/NDrive HPe/NDrive HLe/Npaq

Ensemble Ensemble CP/Ensemble HPe/Ensemble HLe
Multi-Axis A3200

Soloist CP/Soloist HPe/Soloist HLe



  • Load Curves


Ordering Information

PRO-SV Long-Travel Lift Stage

PRO165SV-020 PRO165SV mechanical-bearing, ball-screw lift stage, 20 mm travel
PRO190SV-035 PRO190SV mechanical-bearing, ball-screw lift stage, 35 mm travel
PRO225SV-050 PRO225SV mechanical-bearing, ball-screw lift stage, 50 mm travel

Feedback (Required)

-E1 Rotary incremental encoder, 1 Vpp
-E2 Rotary incremental encoder, digital RS-422
-E3 Direct linear encoder, 1 Vpp + rotary encoder, 1 Vpp (dual-loop)
-E4 Direct linear encoder, 1 Vpp + rotary encoder, digital RS-422 (dual-loop)
-E5 Direct linear encoder, digital RS-422 + rotary encoder, 1 Vpp (dual-loop)
-E6 Direct linear encoder, digital RS-422 + rotary encoder, digital RS-422 (dual-loop)
-E7 Absolute linear encoder + rotary encoder, 1 Vpp (dual-loop)

Tabletop (Optional)

-TT3 Accessory tabletop with mounting for select rotary stages

Brake (Optional)

-BK Holding brake

Note: The holding brake option is recommended when the payload exceeds 75% of the load capacity as a precaution in the event that power to the stage is unexpectedly lost.

ThermoComp (Optional)

-TCMP ThermoComp integrated thermal compensation

Lifting Hardware (Optional)

-LF Hoist rings

Metrology (Required)

-PL0 No metrology performance plots
-PL1 Metrology, uncalibrated with performance plots
-PL2 Metrology, calibrated (HALAR) with performance p­lots

Integration (Required)

Aerotech offers both standard and custom integration services to help you get your system fully operational as quickly as possible. The following standard integration options are available for this system. Please consult Aerotech if you are unsure what level of integration is required, or if you desire custom integration support with your system.

-TAS Integration - Test as system
Testing, integration, and documentation of a group of components as a complete system that will be used together (ex: drive, controller, and stage). This includes parameter file generation, system tuning, and documentation of the system configuration.
-TAC Integration - Test as components
Testing and integration of individual items as discrete components that ship together. This is typically used for spare parts, replacement parts, or items that will not be used together. These components may or may not be part of a larger system.