Z-Axis Positioning Stage
The SWI-SV series high-precision vertical lift stages achieve long-travel, precise vertical motion at the lowest possible profile height. Four different models offer different travel and load capacities, and each model has multiple configurations. The SWI-SV series vertical lift stages use SP-grade crossed-roller guideways and precision ground ball screws, providing excellent geometric performance and outstanding minimum incremental motion, with minimum incremental step and positioning stability better than 30 nm. The pulse-command-type 5-phase stepper motor with a specified preloaded precision ground screw drive, combined with a directly coupled feedback system, keeps the stage almost perfectly stationary after fast positioning. The SWI-SV uses a mechanism that directly drives the moving carriage, achieving long travel while maintaining minimum height; the minimized working point height reduces Abbe error. It can be seamlessly integrated into multi-axis motion platforms, motion systems and equipment, and can be mounted directly on the SWI-SL and SWI-LM series stages.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Travel | 35 mm |
| Screw Lead | 2 mm |
| Accuracy (Base) | < 1 μm |
| Accuracy (Plus) | < 0.75 μm |
| Resolution (Base) | 2mm / Encoder Line |
| Resolution (Plus) | 1Vpp Sin/Cos (typical 20μm/4096 ≈ 5nm) |
| Min. Incremental Motion (Base) | 100 nm |
| Min. Incremental Motion (Plus) | 50 nm |
| Bi-Directional Repeatability (Base) | < 0.75 μm |
| Bi-Directional Repeatability (Plus) | < 0.5 μm |
| Straightness | 1.5 μm |
| Flatness | 2.5 μm |
| Roll | 8 arc secarc sec |
| Yaw | 6 arc secarc sec |
| Maximum Speed | 15 mm/s |
| Load Capacity (Vertical) | 40 kg |
| Moving Mass (-TTN) | 2.9 kg |
| Moving Mass (-TT1) | 4.8 kg |
| Stage Mass (-TTN) | 8.3 kg |
| Stage Mass (-TT1) | 10.2 kg |
| Traceability For Calibration | ISO230-2 or GB17421, 5 round trips, ≥10Pot/L |
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