The PPS-28 is a high-precision, long travel linear piezo stage. Miniature crossed roller bearings assure high stiffness and guiding accuracy for loads up to 50 N (horizontal orientation). It utilizes our patent-pending multi-phase piezo motor resulting in high speed (> 2 mm/s) and high blocking force (> 2 N). The PPS-28 is available in open loop or with an external encoder. Closed-loop resolution of 2 nm is achievable. Versions capable of operation in vacuum (10-9 mbar) and/or cryo (4 Kelvin) are available. The PPS-28 is compatible with the MMC-100 and MMC-110 controllers.

Travel Dependent Specifications
Travel range [mm]265176102
Straightness/Flatness [µm]± 1.5± 2.5± 3± 3.5
Pitch [µrad]± 50± 70± 80± 100
Yaw [µrad]± 60± 75± 90± 100
Weight [g]63125165206
Motor Compatibility
Motor optionPiezo Motor, PM-002
Speed, max [mm/s]2 (MMC-100), 10 (MMC-110)
Motor/Feedback Dependent Specifcations
Encoder optionNone (open loop)Analog (1 Vpp)Digital (RS-422)
Resolution, typical [nm]1101
Repeatability, bi-directional [nm]n/a± 50± 50
Repeatability, uni-directional [nm]n/a5050
Accuracy [µm]-± 1± 1
Load Characteristics
OrientationFx [N]Fy [N]Fz [N]Mx [N·m]My [N·m]Mz [N·m]
Load, max25050111
Order no.:PPS-28-
Drive





Piezo Motor, PM-0021



Travel





26 mm
1



51 mm
3



76 mm
4



102 mm
5


Encoder





None (open loop)

0


Analog (1 Vpp)

2


Digital (RS-422)

3

Limit Switch





None


0
Environment





Atmospheric



0

High Vacuum, 10-6 mbar



6

Ultra High Vacuum, 10-9 mbar



9