Picomotor Piezo Linear Actuators

< 30 nm resolution in a compact design
Set-and-forget long-term stability- these actuators stay put
Lifetimes of 1,000,000,000 steps
Vacuum and Ultrahigh-Vacuum

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Overview
Specifications
Ordering
Drawings
Literature & Downloads

	Travel Range (mm)	Mounting
8301NF	12.7	0.375 in. (9.5 mm) Shank
8302	25.4	0.375 in. (9.5 mm) Shank
8303	50.8	0.375 in. (9.5 mm) Shank
8321	12.7	M12 x 0.5 mm Thread
8322NF	25.4	M12 x 0.5 mm Thread
8341NF	NA	0.375 in. (9.5 mm) Shank
8353	12.7	0.25 in. shank
8354	12.7	1/4-40 Thread with retaining nut
8310	12.7	0.375 in. shank (9.5 mm shank)
Vacuum and Ultrahigh-Vacuum

Standard Picomotor Actuators

Picomotor actuators are ideal devices for motorizing fine-positioning stages and mounts in your optical or mechanical systems. Use them with our optomechanical translation stages or your own custom devices. They have better than 30-nm resolution with minimal backlash, and can exert a 5-lb (22-N) force. Moreover, they have exceptional longterm stability and the ability to hold their position with no power applied. These last two features make the Picomotor actuators unique among motion-control devices and ideal for typical set-and-hold applications. Such applications include precision control of sample holders inside cold and/or vacuum chambers, hands-off adjustment of hard-to-reach mirror mounts, or adjustments of optical mounts that are sensitive to forces applied while twisting a knob (for instance optimizing the alignment of a laser cavity or adjusting the pointing of a beam over a long distance).

The standard sized shanks of the Models 830X and 12X0.5-mm threading of the Models 832X let them fit into standard micrometer mounting holes. The Tiny Model 8353 gives you a solution for even the smallest application. For rotation without translation, use the Model 8341NF rotating shaft.

Use these Picomotor actuators with our Model 8753 Intelligent Picomotor (iPico^TM) driver or Model 8703 TTL/Analog driver.
Contact us for custom configurations and volume pricing.

Controller and driver example.

Here a motorized Pint-sized mount is being used to align the probe beam in a pump-probe demonstration.

We also offer integrated motion-control solutions.

Tiny Picomotor Actuators

Our Tiny Picomotor actuator is a smaller-sized version of our standard Picomotor actuators. We have improved the design so that it will meet even more of your compact-area needs.
The Tiny Picomotor actuator is ideal for moving small linear stages, like our Compact Gothic-Arch-Bearing stage. It is also integrated with some our our Pint-Sized mounts. The overall footprint is even smaller now; the cable exits from the side, similarly to our standard Picomotor actuators. For such a small device, it has an impressive pushing force. The maximum load for the Tiny Picomotor actuator is now 3 lbs (13 N).

We have also introduced a vacuum-compatible version of the Tiny Picomotor, the Model 8353-V . It is designed for environments down to 10-6 Torr. It's perfect for moving small optics and stages in your vacuum chambers.

With two mounting options, a standard 0.25" shank and a 1/4-40 thread version, it is straight-forward to incorporate it into your design. The Tiny Picomotor Actuator should be used with the iPico™ controllers and drivers or our TTL/Analog Picomotor driver.

Closed Loop Picomotor Actuator

Model 8310
U.S. Patent #5,394,049, #6,911,763, & #5,410,206

Calibrated highly-accurate positioning with all the beneﬁts of our traditional Picomotor actuators
Compact package enabling integration into our translation stages and most of our optical mounts
Completely compatible with our modular iPico™ network controllers

The Model 8310 closed-loop Picomotor piezo actuator and Model 8751-CL Intelligent closed-loop Picomotor driver are ideal for applications where closed-loop control and position calibration is required. With an integrated rotary encoder and forward and reverse limit switches, this unique device offers the best attributes of the standard Picomotor actuator—<30-nm resolution, >5 lbs (22 N) of force along with set-and-forget long-term stability—with the added beneﬁts of exceptional accuracy and ±1-µm bi-directional repeatability over the entire half-inch travel range.

Choose between operating the Model 8310 closed-loop Picomotor actuator in closed-loop mode where it can hold a set position, or command it to move a speciﬁed distance. You can also choose between position- or velocity-proﬁled movement. Either way, when the actuator reaches its target location, the controller will adjust the motor to the precise requested encoder count and then stop motion. Even if you keep the servo loop enabled, the motor will only move in response to any system disturbances which cause rotation of the screw. Because the inherent resolution of the motor is ﬁner than the resolution of the encoder, zero-count encoder error is always achieved. You can query the encoder to determine the rotation of the screw at any time.

Use the Model 8310 closed-loop Picomotor actuator with our Model 8751-CL Intelligent Closed-Loop Picomotor driver. Our modular iPico drivers and controllers provide the ability to build a system incorporating multiple standard Picomotor actuators and one or more closed-loop Picomotor actuators at the same time on the same control network. Within the iPico system, the Model 8751-CL driver controls one Model 8310 closed-loop Picomotor actuator. It has one 4-pin RJ-22 connector for the Picomotor actuator and one 25-pin D connector for the encoder and limit-switch signal. You can control up to 31 Model 8751-CL drivers with the Model 8752 network controller from a computer via Ethernet or RS-232.

The Model 8751-CL Intelligent closed-loop Picomotor driver includes companion software and example programs in LabVIEW™, Visual C++ and Visual Basic—enabling you to get up and running quickly. The DCN (Distributed Control Network) setup and diagnostic utility software allows you test and use an actuator network without doing any programming. Combining the Model 8752 iPico Ethernet controller, with the Model 8757 iPico handpad provides an option for stand-alone operation without use of a computer. The Model 8754 joystick is also compatible with this driver. Standard RJ-45 connectors and cables are used to connect the driver to the controller or other modular iPico modules. Direct computer control without the Model 8752 network controller can be achieved by using a Model 8722 communication adapter and DLL’s which you can download from our website.

The closed-loop Picomotor actuator can be integrated into most of our opto-mechanical mounts and is compatible with our translation stages. Please call us for more information on customized orders.

	8301NF	8302	8303	8321	8322NF	8341NF	8353	8354	8310
Minimum Incremental Motion (nm)	<30	<30	<30	<30	<30	NA	<30	<30	<30
Resolution- Angular (mrad)¹	<0.6	<0.6	<0.6	<0.6	<0.6	<0.6	<0.6	<0.6	<0.6
Axial Load Capacity (+Cx) (N)	22	22	22	22	22	NA	13	13	22
Maximum Drive Frequency (kHz)	2	2	2	2	2	2	1.75	1.75	2
Maximum Drive Torque [Nm (oz-in)]	0.018 (2.5)	0.018 (2.5)	0.018 (2.5)	0.018 (2.5)	0.018 (2.5)	0.018 (2.5)	0.014	0.014	0.018
Rated Life²	> 1 x 10⁹ steps	> 1 x 10⁹ steps	> 1 x 10⁹ steps	> 1 x 10⁹ steps	> 1 x 10⁹ steps	>1,5x10⁸ steps	>1,5x10⁸ steps	>1,5x10⁸ steps	>1x10⁹ Schritte
Travel (mm²)	0.50 (12.7)	1 (25.4)	2 (50.8)	0.50 (12.7)	1 (25.4)	NA	0.50 (12.7)	0.50 (12.7)	0.50 (12.7)
Speed Range (mm/min)	1.2	1.2	1.2	1.2	1.2	3-4 RPM	1.2	1.2	1.2
Operating Temperature Range (°C)	10-40	10-40	10-40	10-40	10-40	10-40	10-40	10-40	10-40
Mounting	0.375 in. (9.5 mm) Shank	0.375 in. (9.5 mm) Shank	0.375 in. (9.5 mm) Shank	M12 x 0.5 mm Thread	M12 x 0.5 mm Thread	0.375 in. (9.5 mm) Shank	0.25 in. shank	1/4-40 Thread with retaining nut	0.375 in. shank (9.5 mm shank)
Connector Type	4-Pin	4-Pin	4-Pin	4-Pin	4-Pin	4-Pin	4-Pin	4-Pin	One Each: 15-Pin D and 4-Pin RJ-22
Cable Length [ft. (m)]	7 (2.1)	7 (2.1)	7 (2.1)	7 (2.1)	7 (2.1)	7 (2.1)	2.1 (7)	2.1 (7)	1.8 (6)

¹ Since these motorized components do not have internal encoders, repeatability is not specified or guaranteed. Step sizes can vary over 20% between the forward and backward directions.
² Lifetime is tested by cycling actuator out 1 mm of travel range and back pushing a 5-lb load.

Model	Description	Availability	price raw	Price	Qty. MULTI ADD
8303	Picomotor Actuator, 2 in. Travel, 30 nm Resolution, 9.5 mm Shank	In Stock	525	$525.00	ADD
8310	Closed Loop Picomotor Actuator, 12.7 mm Travel Range	In Stock	2250	$2,250.00	ADD
8302	Picomotor Actuator, 1 in. Travel, 30 nm Resolution, 9.5 mm Shank	In Stock	525	$525.00	ADD
8321	Picomotor Actuator, 0.5 in. Travel, 30 nm Resolution, M12 x 0.5 mm thread	In Stock	525	$525.00	ADD
8341NF	Rotating Picomotor Actuator, 3-4 RPM, 9.5 mm Shank	In Stock	537	$537.00	ADD
8354	Tiny Picomotor Actuator, 1/4-40 Thread Mount	In Stock	572	$572.00	ADD
8322NF	Picomotor Actuator, 1 in. Travel, 30 nm Resolution, M12 x 0.5 mm thread	In Stock	525	$525.00	ADD
8301NF	Picomotor Actuator, 0.5 in. Travel, 30 nm Resolution, 9.5 mm Shank	In Stock	525	$525.00	ADD
8353	Tiny Picomotor Actuator, 0.25 inch Shank Mount	In Stock	572	$572.00	ADD