Picomotor™ Piezo Linear Actuators

Compare	Model	Compatibility	rankScore	Travel Range	Mounting	Availability	Price	Brand
8301NF Picomotor Piezo Linear Actuator, 0.5 in. Travel, 30 nm Resolution, 9.5 mm Shank $720 Contact Us	8301NF Picomotor Piezo Linear Actuator, 0.5 in. Travel, 30 nm Resolution, 9.5 mm Shank	UNIVERSAL	1.0	12.7 mm	9.5 mm Shank	Contact Us	$720	New Focus
8302 Picomotor Piezo Linear Actuator, 1 in. Travel, 30 nm Resolution, 9.5 mm Shank $720 Contact Us	8302 Picomotor Piezo Linear Actuator, 1 in. Travel, 30 nm Resolution, 9.5 mm Shank	UNIVERSAL	1.0	25.4 mm	9.5 mm Shank	Contact Us	$720	New Focus
8303 Picomotor Piezo Linear Actuator, 2 in. Travel, 30 nm Resolution, 9.5 mm Shank $720 Show	8303 Picomotor Piezo Linear Actuator, 2 in. Travel, 30 nm Resolution, 9.5 mm Shank	UNIVERSAL	1.0	50.8 mm	9.5 mm Shank	Show	$720	New Focus
8321 Picomotor Piezo Linear Actuator, 0.5 in. Travel, 30 nm Res., M12 x 0.5 mm Thread $720 2 Weeks	8321 Picomotor Piezo Linear Actuator, 0.5 in. Travel, 30 nm Res., M12 x 0.5 mm Thread	UNIVERSAL	1.0	12.7 mm	M12 x 0.5 mm Thread	2 Weeks	$720	New Focus
8322NF Picomotor Piezo Linear Actuator, 1 in. Travel, 30 nm Res., M12 x 0.5 mm Thread $704 In Stock	8322NF Picomotor Piezo Linear Actuator, 1 in. Travel, 30 nm Res., M12 x 0.5 mm Thread	UNIVERSAL	1.0	25.4 mm	M12 x 0.5 mm Thread	In Stock	$704	New Focus

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Specifications

Models	8301NF	8302	8303	8321	8322NF
Travel Range	12.7 mm	25.4 mm	50.8 mm	12.7 mm	25.4 mm
Maximum Speed	1.2 mm/min	1.2 mm/min	1.2 mm/min	1.2 mm/min	1.2 mm/min
Axial Load Capacity	22 N	22 N	22 N	22 N	22 N
Minimum Incremental Motion	<30 nm	<30 nm	<30 nm	<30 nm	<30 nm
Drive Torque	0.018 Nm	0.018 Nm	0.018 Nm	0.018 Nm	0.018 Nm
Frequency	2 kHz	2 kHz	2 kHz	2 kHz	2 kHz
Mounting	9.5 mm Shank	9.5 mm Shank	9.5 mm Shank	M12 x 0.5 mm Thread	M12 x 0.5 mm Thread
Cable Length	2.1 m	2.1 m	2.1 m	2.1 m	2.1 m
Connector Type	4-Pin RJ-22	4-Pin RJ-22	4-Pin RJ-22	4-Pin RJ-22	4-Pin RJ-22
Rated Life	> 1 x 10⁹ steps	> 1 x 10⁹ steps	> 1 x 10⁹ steps	> 1 x 10⁹ steps	> 1 x 10⁹ steps
Operating Temperature	10-40° C	10-40° C	10-40° C	10-40° C	10-40° C

Specifications

Models	8301NF	8302	8303	8321	8322NF
Travel Range	12.7 mm	25.4 mm	50.8 mm	12.7 mm	25.4 mm
Maximum Speed	1.2 mm/min	1.2 mm/min	1.2 mm/min	1.2 mm/min	1.2 mm/min
Axial Load Capacity	22 N	22 N	22 N	22 N	22 N
Minimum Incremental Motion	<30 nm	<30 nm	<30 nm	<30 nm	<30 nm
Drive Torque	0.018 Nm	0.018 Nm	0.018 Nm	0.018 Nm	0.018 Nm
Frequency	2 kHz	2 kHz	2 kHz	2 kHz	2 kHz
Mounting	9.5 mm Shank	9.5 mm Shank	9.5 mm Shank	M12 x 0.5 mm Thread	M12 x 0.5 mm Thread
Cable Length	2.1 m	2.1 m	2.1 m	2.1 m	2.1 m
Connector Type	4-Pin RJ-22	4-Pin RJ-22	4-Pin RJ-22	4-Pin RJ-22	4-Pin RJ-22
Rated Life	> 1 x 10⁹ steps	> 1 x 10⁹ steps	> 1 x 10⁹ steps	> 1 x 10⁹ steps	> 1 x 10⁹ steps
Operating Temperature	10-40° C	10-40° C	10-40° C	10-40° C	10-40° C

Features

Picomotor Technology

Picomotor actuators rely on the basic difference between dynamic and static friction. An example of this is the magician's "tablecloth trick," in which a quick pull (low dynamic friction) of the cloth leaves the dishes on the table, while a slow pull (high static friction) would pull the dishes off the table and cause a big mess! Our Picomotor actuator uses the same principle with a threaded jaw, similar to two halves of a split nut, clamped around a precision 80-pitch screw. One jaw is connected to one end of a piezoelectric transducer, and the other jaw is connected to the other end of the transducer. A slow electrical signal applied to the piezo slowly changes the length, causing the two jaws to slide in opposite directions. This slow sliding motion makes the screw turn (static friction). At the end of the transducer motion, a fast electrical signal quickly returns the jaws to their starting positions. Because of the screw’s inertia and low dynamic friction, it remains motionless, holding its position. Simply reversing the order of the fast and slow signals reverses the direction of rotation.

<30 nm Positioning Resolution

Our Picomotor actuators have a step size of less than 30 nm per step, allowing for very small, controlled movements. Note that the step size for open-loop picomotors varies from step to step and between forward and backward directions, and is directly related to payload – hence, position feedback should be provided by an external signal when operating an open-loop picomotor. For applications requiring absolute position calibration and high repeatability, consider a Closed-Loop Picomotor actuator.

Substantial Force Contained in a Small Package

With load capacity of 5 lbs (22 N), our Picomotor actuators have a substantial push force while still fitting in a compact package.

Simple Integration

The standard sized mounting options, 0.375" shank or M12 x 0.5 mm thread, of the Picomotor actuators allow them easily be integrated into standard micrometer mounting holes.

Easy-to-use Flexible Motion Controllers and Drivers

Our Open-Loop Picomotor controllers and drivers are modular. You can daisy-chain up to 31 drivers together with four channels each, so you can have a network of up to 124 standard Picomotor actuators. You have two interface options with the controller system: hand pad or computer, both providing plug-and-play use. Alternatively, you may choose to use our TTL/Analog Picomotor driver.

Set-and-forget Stability With Virtually No Backlash