Piezo·Nano·Motion
Ring Preloaded Piezo Actuator
Low voltage ring piezo actuator is ring piezo stack actuator with mechanical preload. There is an aperture through it, which can be used in optical positioning systems.
Preloaded Piezo Actuators
Aperture
Characteristics • Stroke to 47μm
• High precision of closed loop positioning
• Blocking force to 5300N
• Aperture: Ø9mm/Ø14mm
Input Voltage vs Displacement Curve
Installation There are screw base at the bottom for fixing, and screw head
50
at the top connected to load. There is a fixing cap for installing Displacement [ μm]
of mirror.
Bottom view
Fixing cap
40 30 20
HPSt150/14-10/55 VS22 Open-loop HPSt150/14-10/12 VS22 Close-loop
10 0
15
30
45
60
75
90
105
120
135
150
Driving voltage [V]
Drawings VS22 Model
L
HPSt150/14-10/12 VS22
31
HPSt150/14-10/25 VS22
44
HPSt150/14-10/40 VS22
58
HPSt150/14-10/55 VS22
71
Fixing cap
motion direction
VS35 Model
L
HPSt150/20-15/12 VS35
31
HPSt150/20-15/25 VS35
44
HPSt150/20-15/40 VS35
58
HPSt150/20-15/55 VS35
71 motion direction
Fixing cap
Technical Data Type HPSt150/14-10/12 VS22 HPSt150/14-10/25 VS22 HPSt150/14-10/40 VS22 HPSt150/14-10/55 VS22 HPSt150/20-15/12 VS35 HPSt150/20-15/25 VS35 HPSt150/20-15/40 VS35 HPSt150/20-15/55 VS35
Stroke [μm]±10%* 11 23 38 47 11 23 38 47
Stiffness [N/μm]±20% 250 120 70 50 450 230 150 100
Push/pull force [N] 3000/250 3000/250 3000/250 3000/250 5300/450 5300/450 5300/450 5300/450
El. capacitance [μF]±20% 2.6 5.2 7.8 11 5 10 15 20
Resonant frequency[kHz] 30 20 14 9 30 20 17 15
Length L [mm]±0.3 31 44 58 71 31 44 58 71
*At 0~150V, recommended voltage 0~120V for high-reliability and long-term operation. Closed-loop version for high linearity and repeatability.
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