Manufacturer of Linear Motion SystemsManufacturer of Linear Motion Systems
4215 Pleasant Rd
Fort Mill, SC 29708

Customer Service

800-284-9784

Manufacturer of Linear Motion SystemsManufacturer of Linear Motion Systems

LEGS® Piezomotor LT20 Product


The LT20 Piezo LEGS® linear motor is Small and Powerful linear motor weighing only 29 grams.   It is direct drive with no backlash and can microstep in the sub-nano millimeter range.   Full force greater than 20 Newton power-off locking safety function.

Available in stainless steel or other non-magnetic materials for high vacuum applications.

LT20 Piezomotor Product
LT20 in hand photo

So small, about the size of your thumb

Uses LEGS® Walking Drive Technology

By applying voltage to a piezoelectric material, you can make it change shape.  In this product there are multiple piezoelectric motor "legs".  Each motor leg can be elongated as well as bent sideways.   Movement of each leg pair can be synchronized to create a walking motion.  The direct friction coupling between legs and the drive rod means Piezo LEGS® will operate with no backlash or mechanical play.   Below is a simple animation of this technology.

Motor Legs

Popular Applications

This Piezomotor is excellent for tiny highly accurate motion requirements.

Product used in:

  •   Semiconductor Processing Equipment
  •   Nanometer Positioning Systems
  •   Advanced Optic Applications
  •   Active Autofocus Systems
  •   Microdialysis Pumps
  •   Surgical Robots

Multiple ways to apply the motor.    For instance, the motor can be fixed in place, allowing rod to move in a linear fashion or the rod can be fixed allowing the motor to move along it.

LT20 Piezomotor

Compact Size for Small Spaces

Without the ceramic driving rod the motor can fit within a 22 mm long x 21 mm tall x 17.5 mm wide space.   The ceramic driving rod length is the only variable.  It's length depends on your stroke requirement.

Resulting product is very compact and fits in small spaces where conventional rotary motors will not.


Top View    (L = Drive Rod Length)
LT20 Piezo Top View Motor Drawing
Side View
LT20 Piezo Side View Motor Drawing
End View
LT20 Piezo End View Motor Drawing

Drive Rod and Stoke Relationship

StrokeDrive Rod
Range (mm)Length (mm)
0 - 3.530
0 - 13.540
0 - 23.550
0 - 33.560
0 - 74.5100.8

Motor Speed at 20 C, No Load

Max Freq.Speed Range
Waveform(Hz)(mm/s)
Rhomb30000 - 24
Delta30000 - 15

Motor performance with waveform Rhomb (filled) and waveform Delta (dotted).   The full step length is the average distance the drive rod moves when the legs take on full step (i.e., for one waveform cycle).

Motor Performance Plot

What's Needed to Get Started

A starter kit is available with each of the Piezo motor products.  The kit will allow you to quickly get up and running.  Each kit includes:

  • Piezo Motor
  • Controller Board
  • Wiring Connector/Cables
  • Power Supply

PiezoMotor Starter Kit

Software

We offer the PiezoMotor DriveLLab software for demo and starter kits.

This software supports the following controllers: PMD101, PMD301 and PMD401.

Software is compatible with MS Windows 7 or 10


Please contact one of our engineers for more details about this product.

800-284-9784

PiezoMotor DriveLab Software