New Focus 8302 Picomotor Piezo Linear Actuator 1" Motorized Micrometer #2

Description

New Focus 8302 Picomotor Piezo Linear Actuator 1" Motorized Micrometer #2
New Focus 8302 Picomotor Piezo Linear Actuator 1" Motorized Micrometer #2
Clean used Newport / New Focus Picomotor motorized micrometer. These use a piezoelectric actuator to provide precision rotation. Standard 9.5mm shank fits where manual micrometers would mount. Unmarked and missing its cover, but it appears to be 8302 type. Tested here and guaranteed working.
"Picomotor actuators are ideal for motorizing fine-positioning stages and mounts for applications that require exceptional precision, small step sizes, and set-and-forget stability, all in a compact package. 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."
Features and Specs:
1" (25.4mm) Travel
Maximum Speed: 1.2 mm/min
Drive Torque: 0.018 Nm
Frequency: 2kHz
Mounting: 9.5mm Shank
Cable Length: 2.1m
Connector Type: 4-pin RJ-22
Rated Life: 1 x 10
9
steps
30 nm positioning resolution
Substantial 22 N axial load capacity
Set-and-forget long-term stability
Easy-to-use, flexible controller/drivers
Manual adjustment knob
Simple integration
Cost 7 from Newport
Pictures and description Copyright © 2020 Starlight Photonics, Inc.
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Company Information
Starlight Photonics, Inc.
PO Box 1134
Alviso, CA 95002