Displacement to 120 µm
Pushing Forces to 2000 N
Pulling Forces to 300 N
Sub-msec Response
Sub-Nanometer Resolution
Options: UHV, Low & High Temperature
P-244 and P-245 Preloaded PZT Linear Actuators are high resolution precision actuators with closed-loop option for static and dynamic applications. They provide sub-millisecond response and sub-nanometer resolution. The internal spring preload makes them ideal for machining applications.
Standard models are specifically designed for open loop operation. For highest accuracy, select the P-177.10 closed loop option feedback control integrating ultra-high resolution strain gage position sensors for operation with PI servo control electronics (click here for details on Position Sensors and Closed Loop Operation).
P-245 models are equipped with different piezo ceramic wafers, providing more displacement than P-244 models in the same package. The piezo stacks are protected from forces by an internally spring preload stainless steel case. The standard translator tip and base have tapped holes. Select the P-244.95 ball tip option to help decouple off-axis or torque loads from the translator tip. For push/pull forces up to 5 N, the piezo translator can be mounted by clamping around the case. For larger forces, the translator must be mounted by the base.
For positioning of magnetic parts, the P-176.10 Magnetic Adapter can be screwed into the translator tip.
Application examples:
Static and dynamic positioning, optics, metrology, smart structures, precision machining, adaptive mechanics, vibration cancellation, switching, laser tuning, patch clamping, etc.
Accessories:
P-176.10 magnetic adapter with M5 threaded stud
Extension cables & connectors.
Factory Installed Options:1)
P-177.10 Closed Loop Option
P-702.10 High Temperature Option
P-702.20 Low Temperature Option
P-703.20 High Vacuum Option
P-705.00 Positive Polarity
P-244.95 Ball Tip
1) When ordering the following options, change the last digit to 7, e.g. P-244.10 to P-244.17, and list options separately.
P-244, P-245 Preloaded Open Loop PZT Actuators and Closed Loop Piezo Linear Actuators (Piezo Linear Translators)
See "PZT Control Electronics" section for our comprehensive line of low noise, modular and OEM control electronics for computer and manual control.
TECHNICAL DATA: P-244, P-245 | ||||||||||
Models * | P-244.10 | P-244.20 | P-244.30 | P-244.40 | P-245.20 | P-245.30 | P-245.50 | P-245.70 | Units | Notes |
Open loop travel @ | 10 | 20 | 40 | 60 | 20 | 40 | 80 | 120 | µm ± 20 % | A4 |
* Closed loop travel ³ | 10 | 20 | 40 | 60 | 20 | 40 | 80 | 120 | µm | A5 |
* Integrated feedback sensor | SGS | SGS | SGS | SGS | SGS | SGS | SGS | SGS | B | |
* Closed / open loop | 0.2 / 0.1 | 0.4 / 0.2 | 0.8 / 0.4 | 1.2 / 0.6 | 0.4 / 0.2 | 0.8 / 0.4 | 1.6 / 0.8 | 2.4 / 1.2 | nm | C4 |
Stiffness | 180 | 98 | 53 | 29 | 170 | 91 | 48 | 32 | N/µm ± 20 % | D1 |
Force generation (blocked) | 1800 | 2000 | 2100 | 1800 | 3400 | 3600 | 3800 | 3800 | N ± 20 % | D2 |
Push/pull force capacity | 2000 / 300 | 2000 / 300 | 2000 / 300 | 2000 / 300 | 2000 / 300 | 2000 / 300 | 2000 / 300 | 2000 / 300 | N | D3 |
Torque limit (at tip) | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | mNm | D6 |
Max. operating voltage | -1500 | -1500 | -1500 | -1500 | -1000 | -1000 | -1000 | -1000 | V | A7 |
Electrical capacitance | 25 | 47 | 89 | 133 | 95 | 180 | 340 | 500 | nF ± 20 % | F1 |
Dynamic operating current coefficient (DOCC) | 3 | 3 | 3 | 3 | 6 | 6 | 6 | 6 | µA/ | F2 |
Unloaded resonant | 16 | 12 | 9 | 5.5 | 15 | 11 | 8 | 5 | kHz ± 20 % | G2 |
Standard operating temperature range | -40 to +80 | -40 to +80 | -40 to +80 | -40 to +80 | -40 to +80 | -40 to +80 | -40 to +80 | -40 to +80 | ° C | H2 |
Voltage connection | VH | VH | VH | VH | VH | VH | VH | VH | J1 | |
* Sensor connection | L | L | L | L | L | L | L | L | J2 | |
Weight without cables | 59 | 72 | 102 | 136 | 59 | 72 | 102 | 136 | g ± 5 % | K |
Material case / end pieces | N-S | N-S | N-S | N-S | N-S | N-S | N-S | N-S | L | |
Length L | 45 | 61.5 | 93.5 | 127 | 45 | 61.5 | 93.5 | 127 | mm ± 0.5 | |
Recommended Amplifier/Controller | B, I, J | B, I, J | B, I, J | B, I, J | B, I, J | B, I, J | B, I, J | B, I, J | M |
* Closed loop models require the P-177.10 option and are supplied with calibration data sheets
** Noise equivalent motion with E-507 amplifier
P-244,245 Dimensions
For mounting guidelines click here
Custom design for volume buyers
This is a legacy product that may have limited availability or may have been replaced. Ask a PI engineer for an equivalent new model.